Seachoice U-Bolts

Round U-Bolt, 1 3/4" X 4 3/8" - Seachoice
Your Price: $5.67
Save: $0.78
(12% Off $6.45)
Part # 57301 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Round U-Bolt, 1 3/8" X 4 5/16" - Seachoice
Your Price: $4.35
Save: $0.60
(12% Off $4.95)
Part # 57311 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 2 1/16" X 3 3/8" - Seachoice
Your Price: $4.35
Save: $0.60
(12% Off $4.95)
Part # 57331 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
Square U-Bolt, 2 1/16" X 7 7/8" - Seachoice
Your Price: $6.37
Save: $0.88
(12% Off $7.25)
Part # 57341 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 3 7/8" - Seachoice
Your Price: $4.61
Save: $0.64
(12% Off $5.25)
Part # 57351 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
Square U-Bolt, 3 1/16" X 4 7/8" - Seachoice
Your Price: $5.23
Save: $0.72
(12% Off $5.95)
Part # 57361 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
Square U-Bolt, 1 9/16" X 3 9/16", Bulk - Seachoice
Your Price: $4.18
Save: $0.57
(11% Off $4.75)
Part # 57200 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 1 9/16" X 3 9/16" - Seachoice
Your Price: $4.61
Save: $0.64
(12% Off $5.25)
Part # 57201 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 2 1/16" X 2 13/16", Bulk - Seachoice
Your Price: $4.18
Save: $0.57
(11% Off $4.75)
Part # 57210 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 2 1/16" X 2 13/16" - Seachoice
Your Price: $4.61
Save: $0.64
(12% Off $5.25)
Part # 57211 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 2 13/16", Bulk - Seachoice
Your Price: $4.18
Save: $0.57
(11% Off $4.75)
Part # 57220 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 2 13/16" - Seachoice
Your Price: $4.61
Save: $0.64
(12% Off $5.25)
Part # 57221 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 4 5/16", Bulk - Seachoice
Your Price: $4.79
Save: $0.66
(12% Off $5.45)
Part # 57230 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 4 5/16" - Seachoice
Your Price: $5.23
Save: $0.72
(12% Off $5.95)
Part # 57231 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 4 1/16" X 2 13/16", Bulk - Seachoice
Your Price: $4.97
Save: $0.68
(12% Off $5.65)
Part # 57240 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 4 1/16" X 2 13/16" - Seachoice
Your Price: $5.23
Save: $0.72
(12% Off $5.95)
Part # 57241 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Round U-Bolt, 1 3/4" X 4 3/8", Bulk - Seachoice
Your Price: $5.23
Save: $0.72
(12% Off $5.95)
Part # 57300 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Round U-Bolt, 1 3/8" X 4 5/16", Bulk - Seachoice
Your Price: $3.91
Save: $0.54
(12% Off $4.45)
Part # 57310 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 1 5/8" X 3 9/16", Bulk - Seachoice
Your Price: $3.91
Save: $0.54
(12% Off $4.45)
Part # 57320 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
Square U-Bolt, 2 1/16" X 3 3/8", Bulk - Seachoice
Your Price: $3.91
Save: $0.54
(12% Off $4.45)
Part # 57330 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 2 1/16" X 7 7/8", Bulk - Seachoice
Your Price: $6.11
Save: $0.84
(12% Off $6.95)
Part # 57340 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
Square U-Bolt, 3 1/16" X 3 7/8", Bulk - Seachoice
Your Price: $4.18
Save: $0.57
(11% Off $4.75)
Part # 57350 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 4 7/8", Bulk - Seachoice
Your Price: $4.79
Save: $0.66
(12% Off $5.45)
Part # 57360 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 1 9/16" X 4 1/16", Bulk - Seachoice
Your Price: $5.23
Save: $0.72
(12% Off $5.95)
Part # 57400 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 1 9/16" X 4 1/16" - Seachoice
Your Price: $5.67
Save: $0.78
(12% Off $6.45)
Part # 57401 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Round U-Bolt, 2 3/8" X 5 3/8", Bulk - Seachoice
Your Price: $6.11
Save: $0.84
(12% Off $6.95)
Part # 57420 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Round U-Bolt, 2 3/8" X 5 3/8" - Seachoice
Your Price: $6.37
Save: $0.88
(12% Off $7.25)
Part # 57421 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 3 13/16", Bulk - Seachoice
Your Price: $5.49
Save: $0.76
(12% Off $6.25)
Part # 57430 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 3 5/16", Bulk - Seachoice
Your Price: $5.67
Save: $0.78
(12% Off $6.45)
Part # 57440 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 3 5/16" - Seachoice
Your Price: $6.11
Save: $0.84
(12% Off $6.95)
Part # 57441 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 4 5/16", Bulk - Seachoice
Your Price: $5.93
Save: $0.82
(12% Off $6.75)
Part # 57450 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
Your Price: $6.11
Save: $0.84
(12% Off $6.95)
Part # 57460 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 5 5/16" - Seachoice
Your Price: $6.55
Save: $0.90
(12% Off $7.45)
Part # 57461 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U-Bolt, 3 1/16" X 5 5/16", Bulk - Seachoice
Your Price: $5.41
Save: $0.74
(12% Off $6.15)
Part # 57470 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
Square U=Bolt, 3 1/16" X 6 5/16" - Seachoice
Your Price: $5.84
Save: $0.81
(12% Off $6.65)
Part # 57471 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 16 hrs 21 mins.
No Reviews | Write Review | Ask Question
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, 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
                            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 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 | Write 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.
                                      Was this review helpful?
                                      Based On 2 Reviews | Write Review
                                      Did the Job
                                      by Mark from Surry, Maine on August 09, 2014
                                      Replaced rusted zinc coated bolts that were holding my trailer bunks.
                                      Was this review helpful?
                                      As discribed
                                      by Dave from Osage Beach, Missouri on July 02, 2014
                                      As discribed
                                      Was this review helpful?
                                      Based On 1 Review | Write 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!
                                      (1 of 1 people found this review helpful)
                                      Was this review helpful?
                                      Based On 2 Reviews | Write Review
                                      thread lenghts
                                      by Ravi from Lyndhurst, New Jersey on June 29, 2014
                                      I ordered 4 of these u - bolts. The thread lengths on the bolts were different sizes.
                                      Was this review helpful?
                                      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 | Write Review
                                      Square U=bolt
                                      by Albert from Bonita Springs, Florida on December 10, 2011
                                      As described and priced right
                                      Was this review helpful?
                                      Ask a question for
                                      Question & Answer Guidelines
                                      This product ships in 1 business day.

                                      Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
                                      * Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
                                      Standard Shipping Policies