Wholesale China Black Bolts Factories Exporter – SAE J429 UNC Hex Bolt hex cap screw – Haosheng

Attributes Our Hex bolts are precise in their dimension and extremely robust in their construction. We make sure that our Hex bolts are corrosion resistant. We are highly appreciated worldwide for excellent heat and abrasion resistance. Our stainless steel Hex bolts are suitable for extremely low and high-temperature areas. Our Hex bolts have a longer service life which makes them a very trustworthy choice.

Process Characteristics

It can be divided into single-mode machine and multi-level machine. Simple structure of the product single mold machine can be completed, such as cylindrical head, external hexagon, hexagon bolt.
Multi power position is suitable for product size diversification and irregular appearance. Several sizes and structures can be completed at one time on the same set of mold.
The minimum tolerance of cold heading products can be plus or minus 0.05mm.
Material Requirements:
1. High plasticity and low hardness are required.
2. High surface quality requirements.
3. High dimensional accuracy requirements.

The Production Process

Raw materials warehousing — incoming inspection — mold opening — machine adjusting and testing — starting — rubbing teeth — surface treatment — laboratory testing — packaging and shipping.