Grade 5 Square Truck Frame U Bolts

Grade 5 Square Truck Frame U Bolts

Grade 5 square bend truck frame U-bolts in 5/8" diameter, 3-1/2" between legs, in 12", 16" and 20" lengths with 6" thread length. Made in the U.S.A. from C1541 heat treated steel for mounting truck bodies, dump boxes and equipment to the frame. A matching truck frame U-bolt plate is sold here; nuts and washers are sold separately.

Specifications

• Grade 5, C1541 heat treated steel
• Diameter: 5/8"
• Inside width: 3-1/2" between legs
• Length: 12", 16" and 20"; thread length 6"
• Nuts, washers and plates sold separately
• Made in the U.S.A.

Common Uses

• Mounting truck and dump bodies to the frame
• Snow plow and spreader mounts
• Trailer and equipment frames
• Heavy square tubing and beams

FAQ

Which nuts go with Grade 5 U-bolts?
Use 5/8" Grade 5 or Grade 8 hex nuts with hardened flat washers. Match the thread to the U-bolt.

How tight should I torque them?
Torque depends on thread, finish and lubrication. Use the Bolt Tightening Torque Chart (PDF) on this page as a starting point and re-check after the first few miles.

Why don't they ship at the flat fee?
Truck frame U-bolts are long and heavy, so they do not qualify for flat fee or free shipping. Freight is quoted at checkout.

Can you make a U-bolt size that isn't listed?
Yes. We custom manufacture square and round bend U-bolts in plain, zinc plated, galvanized and stainless steel. Use the Custom Manufactured U Bolts page to request a quote.

Related: Grade 5 Hex Nuts | Square U Bolts | Galvanized Square | Custom U Bolts | Bolts | U Bolts

Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.