These high-strength long hex head bolts are made of premium carbon steel with black oxide finish. The extra long shank design is specially made for thick stack-up assembly of truck suspension, chassis and heavy machinery parts. Precise thread rolling ensures smooth mating and reliable clamping force under heavy load. A full range of thread diameters and over-length options are available to meet special assembly requirements for commercial vehicles and engineering equipment. Strict mechanical property testing guarantees stable performance.
- High-strength carbon steel construction
- Black oxide surface for mild rust resistance and lubricity
- Extra long shank, half thread design
- Stable clamping force for thick assembly stacks
- Widely used for truck suspension, chassis and heavy equipment
- Multiple sizes in stock, OEM custom service supported
Contact us for size chart and bulk price.
FAQ
Q: What is black oxide extra long hex bolt for truck suspension used for?
A: This black oxide extra long hex bolt for truck suspension is a heavy-duty long fastener. It is used for assembling thick stacked components of truck suspension and chassis where standard short bolts cannot reach.
Q: What is the advantage of black oxide coating?
A: Black oxide provides a thin protective layer, helps resist light corrosion and reduces galling during tightening, suitable for high-strength bolt applications.
Q: Do you have half-thread and full-thread long hex bolts?
A: Yes, both half thread and full thread long versions are available according to your drawing.
Q: Can these long bolts be used for ultra-heavy load scenarios?
A: It fits most conventional heavy load scenarios. For ultra-high load working conditions, please confirm the mechanical property requirements with us first.
Q: Can you produce custom extra-long sizes of hex head bolts?
A: Yes, we support custom thread, length and packing for bulk orders.
