Hex cap screws
ASME standard B18.2.1-1996 specifies Hex Cap Screws that range in size from 0.25–3 in (6.35–76.20 mm) in diameter. These fasteners are very similar to hex bolts. They differ mostly in that they are manufactured to tighter tolerances than the corresponding bolts. Machinery’s Handbook refers parenthetically to these fasteners as “Finished Hex Bolts”. Reasonably, these fasteners might be referred to as bolts, but based on the US government document Distinguishing Bolts from Screws, the US government might classify them as screws because of the tighter tolerance. In 1991 responding to an influx of counterfeit fasteners Congress passed PL 101-592 “Fastener Quality Act” This resulted in the rewriting of specifications by the ASME B18 committee. B18.2.1 was re-written and as a result they eliminated the “Finished Hex Bolts” and renamed them the “Hex Cap Screw”—a term that had existed in common usage long before, but was now also being codified as an official name for the ASME B18 standard.
Cap screws factory made from China
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Various kinds of fasteners for you reference
1: Provide custom made service
2: We can help you develop new product
3: Quality assurance
4: Factory price
5: Quality first
6: Customer satisfaction
7: Continuous improvement
8: Refine on
9: Care for the environment
Dongguan mingxing hardware product factory was founded in 1998, is located in Dongguan, the world’s leading hardware parts processing base.
Our products are very popular in the industry. We have many well-known customers, suck as Fastenal, Emerson, ZTE, Hisense, Sony, San Martin, etc. At the same time, the metal fasteners are widely used in a variety of products, including consumer electronics, mobile phones, printers, tablets, power tools, etc.
We have professional automatic fastener assembling machine line which can improve efficiency and reduce your cost and help you create huge benefit. We also have professional design capability to custom-made for your special need.
Dongguan mingxing hardware product factory using cutting edge workmanship and adopting scientific management method, we are aiming at producing good quality products to win customer’s trust and to maximize customer’s satisfaction.
Dongguan mingxing hardware product factory always insist on quality first, focusing on technology and product innovation to create more value for our customers.