What is the Torque Spec for a 5/16 Inch U-Bolt

Question

Question:

what should I torque the u bolts holding slipper springs to axle. the axle is rated 2200lbs. The springs are 1 3/4inch the u bolts are 5/16inch diameter.

asked by: Mike

1

Helpful Expert Reply:

The torque spec for a 5/16" diameter u-bolt is 65 ft lbs. If you do not already have a torque wrench we have the Powerbuilt Dual Drive Torque Wrench part # ALL944001 which contains both a 3/8" and 1/2" drive.

expert reply by: Conner L

1

Answer 1

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Answer 2

The closest leaf spring set we have available to the 22-1/4 inch length you mentioned is the 3-Leaf Double-Eye Spring #SP-113275. This double-eye leaf spring features a length of 23-1/2 inches from the center of the spring eye to the center of the…

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Answer 3

I'd recommend something like the CE Smith Post-Style Guide-Ons, part #CE27620. The posts easily mount to the trailer using the included u-bolts. A lighted post system like #CE27740 is also available. It'd make your jet ski easier to load in…

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Answer 4

If the U-bolts are 9/16 inch diameter, the torque specs should be between 65 to 95 foot lbs. If the U-bolts are 3/8 inch diameter, the torque should be between 30 and 50 foot lbs.

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Answer 5

Torque specs for wheel lug nuts will vary depending on the diameter of the lugs, type of lug nut and the wheel's material. The linked chart details the recommended torque for many combinations. Dexter Hub/Drum #84546UC3 has 1/2-inch studs and…

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Answer 6

The Powerbuilt Beam-Type Torque Wrench #ALL644044 is a great, cost-effective solution for using a torque wrench without dumping a lot of money into it. These are most old-school but still reliable. If the needle doesn't point at zero when the…

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Answer 7

Hey Bekzod, So while we don't have a way of knowing the exact leaf springs for your Arctic Wolf 5th wheel trailer, I can help you determine the correct replacements. You do have to take a measurement, though it's pretty easy, as all you need…

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Answer 8

You can use leaf springs that are rated higher than the axle without any issues as long as they measure the correct measurement for your trailer. For example the 6-leaf double eye spring for 7,000 lb axles part #e64SR measures 24-7/8" eye to…

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Answer 9

Hey Steve, thanks for reaching out! According to my research your 2022 Grand Design Imagine BHE has a GVWR just shy of 7,000 lbs so increasing the leaf spring weight rating by 2.2K will result in a pretty noticeable stiffness and I don't…

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Answer 10

Definitely looks like the springs are being overloaded and need to be replaced. You can use higher rated leaf springs but, the higher you go the stiffer the ride will be. Since we know the weight class with your axles the next step would be to…

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Answer 11

The determine the correct replacement leaf spring on your 2021 Coachmen 259FKDS you'll need to lift your trailer frame so the spring is hanging freely and then measure from center-eye to center-eye, then for the equalizer you need to measure…

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Answer 12

I can help you determine the right replacement double-eye leaf springs for your Keystone Hideout, though we don't have any way of knowing what specific ones you need. It's pretty easy though, as all you need to do is measure your current leaf…

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What is the Torque Spec for a 5/16 Inch U-Bolt

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