1.25" Diameter Square Bend U-bolts

1-1/4 Square Bend Leaf Spring U-bolts

U-bolt Torque Requirements U-bolt Diameter Determination

Custom or Quantity U-Bolt Price Request Form

If you don't see a U bolt that meets your specifications in our catalog, please use our inquire form. We can also make custom suspension U bolts based on the dimensions that you need. These custom axle u-bolts can be shipped anywhere by UPS.

Note - 361-XXX part numbers are U-bolt Kits that include two U-bolts, 4 deep nuts, and 4 hardened washers. 5U-XXXXS and 8U-XXXXS part numbers are individual U-bolts (made to order and non-returnable) with nuts and washers included (i.e. one U-bolt, 2 deep nuts, and 2 hardened washers).

Click Part Number for Pricing and to Order Online!

Part No.	Dim A	Thead Pitch	Dim B	Dim C	Grade	OEM Ref or Thread Length	Remarks
361-142	1 1/4	12	4	13 5/8	8	5 1/2
361-140	1 1/4	12	4	14 5/8	8	5 1/2
361-593	1 1/4	12	4	14 5/8	8	5 1/2	Mack w/DNM200
361-124	1 1/4	12	4	15 5/8	8	5 1/2
361-126	1 1/4	12	4	16 5/8	8	5 1/2
361-594	1 1/4	12	4	16 5/8	8	5 1/2	Mack w/DNM200
361-130	1 1/4	12	4	17 5/8	8	5 1/2
361-138	1 1/4	12	4	18 5/8	8	5 1/2
361-595	1 1/4	12	4	18 5/8	8	5 1/2	Mack w/DNM200
8U-75125S	1 1/4	12	4 1/16	12 5/8	8
8U-75135S	1 1/4	12	4 1/16	13 5/8	8
8U-75145S	1 1/4	12	4 1/16	14 5/8	8
8U-75155S	1 1/4	12	4 1/16	15 5/8	8
8U-75165S	1 1/4	12	4 1/16	16 5/8	8
8U-75175S	1 1/4	12	4 1/16	17 5/8	8
8U-75185S	1 1/4	12	4 1/16	18 5/8	8
8U-75195S	1 1/4	12	4 1/16	19 5/8	8
8U-77115S	1 1/4	12	5 1/16	11 1/2	8
8U-77125S	1 1/4	12	5 1/16	12 1/2	8
8U-77135S	1 1/4	12	5 1/16	13 1/2	8
8U-7714S	1 1/4	12	5 1/16	14 1/8	8
8U-7715S	1 1/4	12	5 1/16	15 1/8	8
8U-7716S	1 1/4	12	5 1/16	16 1/8	8
8U-7717S	1 1/4	12	5 1/16	17 1/8	8
8U-9136S	1 1/4	12	5 1/2	14 1/2	8
8U-9138S	1 1/4	12	5 1/2	15 1/2	8
8U-9456S	1 1/4	12	5 11/16	14	8
8U-9464S	1 1/4	12	5 11/16	15	8
8U-7820S	1 1/4	12	6	20	8

Products [19]

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8U-75125S 1-1/4 X 4-1/16X12-5/8S 30 Square U-bolt with nuts and washers

$58.97