These high-strength hex head bolts are manufactured from premium carbon steel, treated with black oxide finish to reduce surface friction and offer mild rust resistance. High tensile strength makes them ideal for heavy load fastening scenarios. A wide range of thread diameters and lengths are available to meet different assembly requirements for commercial vehicles and engineering equipment. Strict thread inspection ensures stable fitment.
- High tensile strength carbon steel construction
- Black oxide finish for anti-rust and lubricity
- Precise full / half thread options
- Stable clamping force under heavy load
- Widely used for trucks, trailers and machinery
- Multiple sizes in stock, OEM custom service supported
Contact us for size chart and bulk price.
FAQ
Q: What is black oxide high strength hex bolt for heavy truck used for?
A: This black oxide high strength hex bolt for heavy truck is a heavy-duty fastener. It is used for assembling truck frames, chassis parts and engineering machinery components under heavy load conditions.
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 hex bolts?
A: Yes, both half thread and full thread versions are available according to your drawing.
Q: Is this high-strength bolt suitable for extreme heavy load?
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 sizes of hex head bolts?
A: Yes, we support custom thread, length and packing for bulk orders.
