Torque for Installing Nuts of U-Bolt Kit # CE15283GA-8
Question:
I recently ordered some 1/2inch u-bolts and angle brackets for my boat trailer bunk boards. Do you know if these u-bolts are grade 5, and what the torque would be to tighten them to? Normally grade 5 would be around 57 ft lbs but grade 2 would be I think around 45 ft lbs. - Just dont want to overtighten them. Thanks.
asked by: Mike H
Expert Reply:
The correct torque spec for trailer suspension u-bolts will depend on the the diameter of the bolt. You will want to use the following depending on bolt size:
1/2" bolts: 45 ft/lbs - 70 ft/lbs
9/16" bolts: 65 ft/lbs - 95 ft/lbs
5/8" bolts: 100 ft/lbs - 120 ft/lbs
3/4" bolts: 140 ft/lbs - 160 ft/lbs
Since the # CE15283GA-8 is a 1/2 inch diameter you'd want to go with 45-70 and you'd be good.
Product Page this Question was Asked From
CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 8
- Boat Trailer Parts
- U-Bolts
- 3-1/16 Inch Wide
- 1/2 Inch Diameter
- Galvanized Steel
- 3-13/16 Inch Long
- CE Smith
more information >
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