Fasteners with built in washers
A fastener with a built in washer is called a SEM Screw or SEMS Screw, short for pre-asSEMbled.It could be fitted on either a tapered or non-tapered shank.
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what we can do
Feedback from customers
Various kinds of fasteners for you reference
Cardboard package or as requested
1 :We can provide samples in 7 days
2 :Provide custom made service
3 :We can help you develop new product
4 :Quality assurance
5 :Factory price
M-sing Screw Factory with a mature production technology and sophisticated processing techniques, improved detection methods, with the development of strong design capabilities, product quality, the introduction of domestic and international high-precision molds and high-quality raw materials. The main production line with GB, Japan’s JIS, the United States ANSI, the German DIN, BS British standards of bolts, and customers can request all kinds of difficult design and production of standard parts. And through third-party authoritative testing agencies product testing, qualified in the relevant report. Re-header equipment, Roll Machine, tail-cutting, stamping machines, slot milling machines, line cutting, automatic lathes, and other production equipment, some of which more machinery assembling a computer-controlled, automatic detection display, can provide the steady and rapid Zero tolerance of the product, the monthly production capacity of several 10 million.
How to buy from us
1 : We accept all kinds of payment
2 : Provide a tiny order if the products needed in our warehouse
3 : We will reply your email as much as 15 hours