*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