Seachoice U-Bolts

Round U-Bolt, 1 3/4" X 4 3/8" - Seachoice
Your Price: $5.67
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Part # 57301
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Round U-Bolt, 1 3/8" X 4 5/16" - Seachoice
Your Price: $4.35
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Part # 57311
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Square U-Bolt, 1 5/8" X 3 9/16" - Seachoice
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Part # 57321
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Square U-Bolt, 2 1/16" X 3 3/8" - Seachoice
Your Price: $4.35
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Part # 57331
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Square U-Bolt, 2 1/16" X 7 7/8" - Seachoice
Your Price: $6.37
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Part # 57341
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Square U-Bolt, 3 1/16" X 3 7/8" - Seachoice
Your Price: $4.61
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Part # 57351
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Square U-Bolt, 3 1/16" X 4 7/8" - Seachoice
Your Price: $5.23
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Part # 57361
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Square U-Bolt, 1 9/16" X 3 9/16", Bulk - Seachoice
Your Price: $4.18
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Part # 57200
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Square U-Bolt, 1 9/16" X 3 9/16" - Seachoice
Your Price: $4.61
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Part # 57201
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Square U-Bolt, 2 1/16" X 2 13/16", Bulk - Seachoice
Your Price: $4.18
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Part # 57210
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Square U-Bolt, 2 1/16" X 2 13/16" - Seachoice
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Part # 57211
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Square U-Bolt, 3 1/16" X 2 13/16", Bulk - Seachoice
Your Price: $4.18
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Part # 57220
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Square U-Bolt, 3 1/16" X 2 13/16" - Seachoice
Your Price: $4.61
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Part # 57221
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Square U-Bolt, 3 1/16" X 4 5/16", Bulk - Seachoice
Your Price: $4.79
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Part # 57230
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Square U-Bolt, 3 1/16" X 4 5/16" - Seachoice
Your Price: $5.23
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Part # 57231
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Square U-Bolt, 4 1/16" X 2 13/16", Bulk - Seachoice
Your Price: $4.97
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Part # 57240
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Square U-Bolt, 4 1/16" X 2 13/16" - Seachoice
Your Price: $5.23
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Part # 57241
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Round U-Bolt, 1 3/4" X 4 3/8", Bulk - Seachoice
Your Price: $5.23
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Part # 57300
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Round U-Bolt, 1 3/8" X 4 5/16", Bulk - Seachoice
Your Price: $3.91
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Part # 57310
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Square U-Bolt, 1 5/8" X 3 9/16", Bulk - Seachoice
Your Price: $3.91
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Part # 57320
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Square U-Bolt, 2 1/16" X 3 3/8", Bulk - Seachoice
Your Price: $3.91
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Part # 57330
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Square U-Bolt, 2 1/16" X 7 7/8", Bulk - Seachoice
Your Price: $6.11
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Part # 57340
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Square U-Bolt, 3 1/16" X 3 7/8", Bulk - Seachoice
Your Price: $4.18
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Part # 57350
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Square U-Bolt, 3 1/16" X 4 7/8", Bulk - Seachoice
Your Price: $4.79
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Part # 57360
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Square U-Bolt, 1 9/16" X 4 1/16", Bulk - Seachoice
Your Price: $5.23
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Part # 57400
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Square U-Bolt, 1 9/16" X 4 1/16" - Seachoice
Your Price: $5.67
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Part # 57401
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Square U-Bolt, 2 1/16" X 4 13/16", Bulk - Seachoice
Your Price: $5.67
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Part # 57410
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Round U-Bolt, 2 3/8" X 5 3/8", Bulk - Seachoice
Your Price: $6.11
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Part # 57420
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Round U-Bolt, 2 3/8" X 5 3/8" - Seachoice
Your Price: $6.37
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Part # 57421
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Square U-Bolt, 3 1/16" X 3 13/16", Bulk - Seachoice
Your Price: $5.49
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Part # 57430
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Square U-Bolt, 3 1/16" X 3 13/16" - Seachoice
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Part # 57431
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Square U-Bolt, 3 1/16" X 3 5/16", Bulk - Seachoice
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Part # 57440
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Square U-Bolt, 3 1/16" X 3 5/16" - Seachoice
Your Price: $6.11
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Part # 57441
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Square U-Bolt, 3 1/16" X 4 5/16", Bulk - Seachoice
Your Price: $5.93
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Part # 57450
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Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
Your Price: $6.11
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Part # 57460
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Square U-Bolt, 3 1/16" X 5 5/16" - Seachoice
Your Price: $6.55
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Part # 57461
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Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
Your Price: $5.41
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Part # 57470
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Square U=Bolt, 3 1/16" X 6 5/16" - Seachoice
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Part # 57471
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Seachoice
*Note: If item ends with a 0 = Item is Bulk. If item ends with a 1 = item is packaged.

Solid galvanized steel U-bolts with nuts and lock washers. Covers most U-bolt applications.

Part # Diameter Inside Span (A) Inside Bolt Height (B) Thread Length (C) Style Commonly Used On Related Part #
50-57301 3/8-16 1-3/4 4-3/8 1-3/4 Round Axle U-Bolt Plates (Round Axles) 50-55081
50-57311 3/8-16 1-3/8 4-15/16 1-3/4 Round Pipe Bunks 2", 3", 4" & 5" Frames 50-55660
50-57321 3/8-16 1-5/8 3-9/16 1-3/4 Square Axle U-Bolt Plates 50-55081
50-57331 3/8-16 2-1/16 3-3/8 1-3/4 Square 2" Frame Tie Plates 50-55201
50-57341 3/8-16 2-1/16 7-7/8 4 Square Guide On Assemblies
50-57351 3/8-16 3-1/16 3-7/8 1-3/4 Square
50-57361 3/8-16 3-1/16 4-7/8 1-3/4 Square 3" Frame Tie Plates 50-55221

Solid galvanized steel U-bolts with nuts and lock washers. Covers most U-bolt applications.

Part # Diameter Inside Span (A) Inside Bolt Height (B) Thread Length (C) Style Commonly Used On Related Part #
50-57401 1/2-13 1-9/16 4-1/16 2 Square Axle U-Bolt Plates 50-55111
50-57411 1/2-13 2-1/16 4-13/16 2 Square Axle U-Bolt Plates 50-55051
50-57421 1/2-13 2-3/8 5-3/8 2 Round Axle U-Bolt Plates 50-55161
50-57431 1/2-13 3-1/16 3-13/16 2 Square Axle U-Bolt Plates 50-55021
50-57441 1/2-13 3-1/16 3-5/16 2 Square
50-57451 1/2-13 3-1/16 4-5/16 2 Square
50-57461 1/2-13 3-1/16 5-5/16 2 Square
50-57471 1/2-13 3-1/16 6-5/16 2 Square

Solid galvanized steel U-bolts with nuts and lock washers. Covers most U-bolt applications.

Part # Diameter Inside Span (A) Inside Bolt Height (B) Thread Length (C) Style Commonly Used On Related Part #
50-57201 7/16-14 1-9/16 3-9/16 1-3/4 Square Axle U-Bolt Plates 50-55051
50-57211 7/16-14 2-1/16 2-13/16 1-3/4 Square Bolster Brackets for 2" Frames 50-55310, 50-55330, 50-55350
50-57221 7/16-14 3-1/16 2-13/16 1-3/4 Square Bolster Brackets for 3" Frames 50-55310, 50-55330, 50-55350
50-57231 7/16-14 3-1/16 4-5/16 1-3/4 Square
50-57241 7/16-14 4-1/16 2-13/16 1-3/4 Square Bolster Brackets for 4" Frames; 4" Frame Tie Plates 50-55310, 50-55330, 50-55350, 50-55231
Round U-Bolt, 1 3/4" X 4 3/8" - Seachoice
Round U-Bolt, 1 3/4" X 4 3/8" - Seachoice
ROUND U-BOLT- 1 3/4 X 4 3/8 Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 3/8"-16 *C: 1-3/4" (4.45cm) *For: Axle U-Bolt Plates (Round Axles) *B: 4-3/8" (11.11cm) *A: 1-3/4" (4.45cm)
Round U-Bolt, 1 3/8" X 4 5/16" - Seachoice
Round U-Bolt, 1 3/8" X 4 5/16" - Seachoice
Solid galvanized steel U-bolts with nuts and lock washers. Covers most U-bolt applications. Sold individually.
  • A: 1-3/8
  • B: 4-5/16
  • C: 1-3/4

(A = Inside Span, B = Inside Bolt Height, C = Thread Length)

Square U-Bolt, 1 5/8" X 3 9/16" - Seachoice
Square U-Bolt, 1 5/8" X 3 9/16" - Seachoice
  • A- inside span:1 5/8"
  • B-inside bolt height:3 9/16"
  • C-thread length:3 1/4"
  • Thread diameter count 3/8-16
  • Square U-Bolt, 2 1/16" X 3 3/8" - Seachoice
    Square U-Bolt, 2 1/16" X 3 3/8" - Seachoice
    SQUARE U-BOLT- 2 1/16 X 3 3/8 Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 3/8"-16 *C: 1-3/4" (4.45cm) *For: 2" (5.08cm) Frame Tie Plates *B: 3-3/8" (8.57cm) *A: 2-1/16" (5.24cm)
    Square U-Bolt, 2 1/16" X 7 7/8" - Seachoice
    Square U-Bolt, 2 1/16" X 7 7/8" - Seachoice
    Solid galvanized steel U-bolts with nuts and lock washers. Covers most U-bolt applications. Sold individually.
    • A: 2-1/16
    • B: 7-7/8
    • C: 4

      A = Inside Span, B = Inside Bolt Height, C = Thread Length

    Square U-Bolt, 3 1/16" X 3 7/8" - Seachoice
    Square U-Bolt, 3 1/16" X 3 7/8" - Seachoice
    SQUARE U-BOLT- 3 1/16 X 3 7/8. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 3/8"-16 *C: 1-3/4" (4.45cm) *B: 3-7/8" (9.84cm) *A: 3-1/16" (7.78cm)
    Square U-Bolt, 3 1/16" X 4 7/8" - Seachoice
    Square U-Bolt, 3 1/16" X 4 7/8" - Seachoice
    SQUARE U-BOLT- 3 1/16 X 4 7/8 Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 3/8"-16 *C: 1-3/4" (4.45cm) *For: 3" (7.62cm) Frame Tie Plate *B: 4-7/8" (12.38cm) *A: 3-1/16" (7.78cm)
    Square U-Bolt, 1 9/16" X 3 9/16", Bulk - Seachoice
    Square U-Bolt, 1 9/16" X 3 9/16", Bulk - Seachoice
    Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
    • Thread 7/16"-14
    • Type SQ
    • C 1-3/4" (4.45cm)
    • For Axle U-Bolt Plates
    • B 3-9/16" (9.05cm)
    • A 1-9/16" (3.97cm)
      Square U-Bolt, 1 9/16" X 3 9/16" - Seachoice
      Square U-Bolt, 1 9/16" X 3 9/16" - Seachoice
      SQUARE U-BOLT- 1 9/16 X 3 9/16. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk. *Thread: 7/16"-14 *C: 1-3/4" (4.45cm) *For: Axle U-Bolt Plates *B: 3-9/16" (9.05cm) *A: 1-9/16" (3.97cm)
      Square U-Bolt, 2 1/16" X 2 13/16", Bulk - Seachoice
      Square U-Bolt, 2 1/16" X 2 13/16", Bulk - Seachoice
      Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
      • Thread 7/16"-14
      • Type SQ
      • C 1-3/4" (4.45cm)
      • For Bolster Brackets for 2" (5.08cm) Frames
      • B 2-13/16" (7.14cm)
      • A 2-1/16" (5.24cm)
        Square U-Bolt, 2 1/16" X 2 13/16" - Seachoice
        Square U-Bolt, 2 1/16" X 2 13/16" - Seachoice
        SQUARE U-BOLT-2 1/16 X 2 13/16. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk. *Thread: 7/16"-14 *C: 1-3/4" (4.45cm) *For: Bolster Brackets for 2" (5.08cm) Frames *B: 2-13/16" (7.14cm) *A: 2-1/16" (5.24cm)
        Square U-Bolt, 3 1/16" X 2 13/16", Bulk - Seachoice
        Square U-Bolt, 3 1/16" X 2 13/16", Bulk - Seachoice
        Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
        • Thread 7/16"-14
        • Type SQ
        • C 1-3/4" (4.45cm)
        • For Bolster Brackets for
        • 2" (5.08cm) Frames
        • B 2-13/16" (7.14cm)
        • A 2-1/16" (5.24cm)
          Square U-Bolt, 3 1/16" X 2 13/16" - Seachoice
          Square U-Bolt, 3 1/16" X 2 13/16" - Seachoice
          Solid zinc plated steel U-bolts with nuts and lock washers. Covers most U-bolt applications. Sold individually.
          • Diameter: 7/16-14
          • A: 3-1/16
            B: 2-13/16
            C: 1-3/4

            (A = Inside Span, B = Inside Bolt Height, C = Thread Length)

          Square U-Bolt, 3 1/16" X 4 5/16", Bulk - Seachoice
          Square U-Bolt, 3 1/16" X 4 5/16", Bulk - Seachoice
          Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
          • Thread 7/16"-14
          • Type SQ
          • C 1-3/4" (4.45cm)
          • B 4-5/16" (10.95cm)
          • A 3-1/16" (7.78cm)
            Square U-Bolt, 3 1/16" X 4 5/16" - Seachoice
            Square U-Bolt, 3 1/16" X 4 5/16" - Seachoice
            SQUARE U-BOLT-3 1/16 X 4 5/16. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 7/16"-14 *C: 1-3/4" (4.45cm) *B: 4-5/16" (10.95cm) *A: 3-1/16" (7.78cm)
            Square U-Bolt, 4 1/16" X 2 13/16", Bulk - Seachoice
            Square U-Bolt, 4 1/16" X 2 13/16", Bulk - Seachoice
            Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
            • Thread 7/16"-14
            • Type SQ
            • C 1-3/4" (4.45cm)
            • For Bolster Brackets for 4"(10.16cm)
            • Frames 4" (10.16cm) Frame Tie Plates
            • B 2-13/16" (7.14cm)
            • A 4-1/16" (10.32cm)
              Square U-Bolt, 4 1/16" X 2 13/16" - Seachoice
              Square U-Bolt, 4 1/16" X 2 13/16" - Seachoice
              SQUARE U-BOLT- 4 1/16 X 2 13/16 Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 7/16"-14 *C: 1-3/4" (4.45cm) *For: Bolster Brackets for 4"(10.16cm) *Frames: 4" (10.16cm) Frame Tie Plates *B: 2-13/16" (7.14cm) *A: 4-1/16" (10.32cm)
              Round U-Bolt, 1 3/4" X 4 3/8", Bulk - Seachoice
              Round U-Bolt, 1 3/4" X 4 3/8", Bulk - Seachoice
              Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
              • Thread 3/8"-16
              • Type RD
              • C 1-3/4" (4.45cm)
              • For Axle U-Bolt Plates (Round Axles)
              • B 4-3/8" (11.11cm)
              • A 1-3/4" (4.45cm)
                Round U-Bolt, 1 3/8" X 4 5/16", Bulk - Seachoice
                Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                • Thread 3/8"-16
                • Type RD
                • C 1-3/4" (4.45cm)
                • For Axle U-Bolt Plates (Round Axles)
                • B 4-3/8" (11.11cm)
                • A 1-3/4" (4.45cm)
                  Square U-Bolt, 1 5/8" X 3 9/16", Bulk - Seachoice
                  Square U-Bolt, 1 5/8" X 3 9/16", Bulk - Seachoice
                  Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                  • Thread 3/8"-16
                  • Type SQ
                  • C 1-3/4" (4.45cm)
                  • For Axle U-Bolt plates
                  • B 3-9/16" (9.05cm)
                  • A 1-5/8" (4.13cm)
                    Square U-Bolt, 2 1/16" X 3 3/8", Bulk - Seachoice
                    Square U-Bolt, 2 1/16" X 3 3/8", Bulk - Seachoice
                    Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                    • Thread 3/8"-16
                    • Type SQ
                    • C 1-3/4" (4.45cm)
                    • For 2" (5.08cm) Frame Tie Plates
                      Square U-Bolt, 2 1/16" X 7 7/8", Bulk - Seachoice
                      Square U-Bolt, 2 1/16" X 7 7/8", Bulk - Seachoice
                      Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                      • Thread 3/8"-16
                      • Type SQ
                      • C 4" (10.16cm)
                      • For Guide On Assemblies
                      • B 7-7/8" (20cm)
                      • A 2-1/16" (5.24cm)
                        Square U-Bolt, 3 1/16" X 3 7/8", Bulk - Seachoice
                        Square U-Bolt, 3 1/16" X 3 7/8", Bulk - Seachoice
                        Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                        • Thread 3/8"-16
                        • Type SQ
                        • C 1-3/4" (4.45cm)
                        • B 3-7/8" (9.84cm)
                        • A 3-1/16" (7.78cm)
                          Square U-Bolt, 3 1/16" X 4 7/8", Bulk - Seachoice
                          Square U-Bolt, 3 1/16" X 4 7/8", Bulk - Seachoice
                          Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                          • Thread 3/8"-16
                          • Type SQ
                          • C 1-3/4" (4.45cm)
                          • For 3" (7.62cm) Frame Tie Plate
                          • B 4-7/8" (12.38cm)
                          • A 3-1/16" (7.78cm)
                            Square U-Bolt, 1 9/16" X 4 1/16", Bulk - Seachoice
                            Square U-Bolt, 1 9/16" X 4 1/16", Bulk - Seachoice
                            Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                            • Thread 1/2"-13
                            • Type SQ
                            • C 2" (5.08cm)
                            • For Axle U-Bolt Plates
                            • B 4-1/16" (10.32cm)
                            • A 1-9/16" (3.97cm)
                              Square U-Bolt, 1 9/16" X 4 1/16" - Seachoice
                              Square U-Bolt, 1 9/16" X 4 1/16" - Seachoice
                              Solid plated steel U-bolts with nuts and lock washers. Covers most U-bolt applications. Sold individually. A=1-9/16, B=4-1/16, C=2 * A = Inside Span * B = Inside Bolt Height * C = Thread Length
                              Square U-Bolt, 2 1/16" X 4 13/16", Bulk - Seachoice
                              Square U-Bolt, 2 1/16" X 4 13/16", Bulk - Seachoice
                              Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                              • Thread 1/2"-13
                              • Type SQ
                              • C 2" (5.08cm)
                              • For Axle U-Bolt Plates
                              • B 4-13/16" (12.12cm)
                              • A 2-1/16" (5.24cm)
                                Round U-Bolt, 2 3/8" X 5 3/8", Bulk - Seachoice
                                Round U-Bolt, 2 3/8" X 5 3/8", Bulk - Seachoice
                                Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                                • Thread 1/2"-13
                                • Type RD
                                • C 2" (5.08cm)
                                • For Axle U-Bolt Plates
                                • B 5-3/8" (13.65cm)
                                • A 2-3/8" (6.03cm)
                                  Round U-Bolt, 2 3/8" X 5 3/8" - Seachoice
                                  Round U-Bolt, 2 3/8" X 5 3/8" - Seachoice
                                  ROUND U-BOLT- 2 3/8 X 5 3/8. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 1/2"-13 *C: 2" (5.08cm) *For: Axle U-Bolt Plates *B: 5-3/8" (13.65cm) *A: 2-3/8" (6.03cm)
                                  Square U-Bolt, 3 1/16" X 3 13/16", Bulk - Seachoice
                                  Square U-Bolt, 3 1/16" X 3 13/16", Bulk - Seachoice
                                  Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                                  • Thread 1/2"-13
                                  • Type SQ
                                  • C 2" (5.08cm)
                                  • For Axle U-Bolt Plates
                                  • B 3-13/16" (9.68cm)
                                  • A 3-1/16" (7.78cm)
                                    Square U-Bolt, 3 1/16" X 3 13/16" - Seachoice
                                    Square U-Bolt, 3 1/16" X 3 13/16" - Seachoice
                                    SQUARE U-BOLT-3 1/16 X 3 13/16. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 1/2"-13 *C: 2" (5.08cm) *For: Axle U-Bolt Plates *B: 3-13/16" (9.68cm) *A: 3-1/16" (7.78cm)
                                    Square U-Bolt, 3 1/16" X 3 5/16", Bulk - Seachoice
                                    Square U-Bolt, 3 1/16" X 3 5/16", Bulk - Seachoice
                                    Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                                    • Thread 1/2"-13
                                    • Type SQ
                                    • C 2" (5.08cm)
                                    • B 3-5/16" (8.41cm)
                                    • A 3-1/16" (7.78cm)
                                      Square U-Bolt, 3 1/16" X 3 5/16" - Seachoice
                                      Square U-Bolt, 3 1/16" X 3 5/16" - Seachoice
                                      SQUARE U-BOLT- 3 1/16 X 3 5/16. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 1/2"-13 *C: 2" (5.08cm) *B: 3-5/16" (8.41cm) *A: 3-1/16" (7.78cm)
                                      Square U-Bolt, 3 1/16" X 4 5/16", Bulk - Seachoice
                                      Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                                      • Thread 1/2"-13
                                      • Type SQ
                                      • C 2" (5.08cm)
                                      • B 4-5/16" (10.95cm)
                                      • A 3-1/16" (7.78cm)
                                        Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
                                        Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
                                        Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card or in bulk.
                                        • Thread 1/2"-13
                                        • Type SQ
                                        • C 2" (5.08cm)
                                        • B 5-5/16" (13.49cm)
                                        • A 3-1/16" (7.78cm)
                                          Square U-Bolt, 3 1/16" X 5 5/16" - Seachoice
                                          Square U-Bolt, 3 1/16" X 5 5/16" - Seachoice
                                          SQUARE U-BOLT- 3 1/16 X 5 5/16. Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. *Thread: 1/2"-13 *C: 2" (5.08cm) *B: 5-5/16" (13.49cm) *A: 3-1/16" (7.78cm)
                                          Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
                                          Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
                                          Solid plated steel U-bolts with nuts and lock washers. Covers most U-bolt applications. Sold individually.
                                          • Diameter: 1/2-13
                                          • A: 3-1/16
                                            B: 5-5/16
                                            C: 2

                                            (A = Inside Span, B = Inside Bolt Height, C = Thread Length)

                                          Square U=Bolt, 3 1/16" X 6 5/16" - Seachoice
                                          Square U=Bolt, 3 1/16" X 6 5/16" - Seachoice
                                          Solid plated steel U-bolts with nuts and lock washers. Covers most U-bolt applications. Sold individually.
                                          • Diameter: 1/2-13
                                          • A: 3-1/16
                                            B: 6-5/16
                                            C: 2

                                            (A = Inside Span, B = Inside Bolt Height, C = Thread Length)

                                          Based On 1 Review
                                          The only boat supply company to buy from!
                                          by Brian from Winthrop, Maine on April 12, 2014
                                          I'm picky. I order a lot of things online. Despite the fact that I ordered something pretty insignificant, everything from ease or ordering to shipment speed and cost to follow up, to quality of the product was exemplary with iboats. I've had some good experiences with other companies online when ordering other than boat supplies, but NONE have been as high class as iboats.
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                                          Based On 1 Review
                                          not 3/8" thick, only 5/16"
                                          by Jeremiah from Denmark, Maine on August 18, 2013
                                          The U-bolts have "3/8 inch" printed clearly right on the package, but my eye instantly saw that they were undersized. In actual fact, they are only 5/16ths of an inch thick. Can't argue with a caliper. This is a full size down and much less strong. A 3/8 inch nut is way too big. The other dimensions are correct, so the manufacturer does know how to measure, but chose to use undersized stock to cheat and save money. They are hot dipped galvanized. I bought four of them but decided not to use them. Maybe they will come in handy for some light duty job. This is not an iboat error, they did an wonderfully fast job shipping to me at a low shipping rate. I received my order in 26 hours using the standard fee. My other items were fine. I really like dealing with iboat!
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                                          Based On 1 Review
                                          Great service
                                          by Vitaliy from Cary, North Carolina on March 30, 2014
                                          Thanks for fast shipping and good quality product!
                                          Was this review helpful?
                                          Based On 1 Review
                                          Square U=bolt
                                          by Albert from Bonita Springs, Florida on December 10, 2011
                                          As described and priced right
                                          Was this review helpful?
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                                          Great Boating Days are Ahead!
                                          Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!
                                          Great Boating Days are Ahead!
                                          Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!