We strictly control product quality, making our wing nut CE, GB Standard hex socket screw, Bolt ISO9001:2008 sell well abroad. We firmly stick to the business policy of "winning by quality, the pursuit of scale benefits". We are keeping up with the advanced techniques, growing through creating more values for our clients and society. Your comments and solutions are remarkably appreciated.
Shanghai Jinrui Norm Parts Supplies Co.,Ltd is one of the leading square washer manufacturers and suppliers in China, welcome to buy square washers, square lock washer, square plain washer, asme f436 square washer from our factory and company.
ASTM F436 standard Spring washer covers the dimensional requirments of inch series Spring WASHER.The standard of ASTM F436 standard Spring washer is ASTM F436 ,
the Spring washer is widely used, mainly goes with bolt and screw.ASTM F436 is with high hardness mostly made from #45 steel and other alloy steel.
yellow zinc black oxide
We provide good power in high-quality and progress, merchandising, revenue and internet marketing and operation for Stainless Steel Square Flat Washer /round washer. Ar more, you'll be able to come to our factory to see it. Since the establishment, the company has strictly implemented the quality system, continuously optimized and standardized the production process, improved various production standards, and inspected products piece by piece.