
DIN7991 Hex Socket Coutersunk Head Machine Screw in Black Grade4.8
We have a young, high-quality, pioneering scientific research team that combines modern information technology to research and develop high-quality auto fasteners TS16949, toilet anchor bolts, security screws. Our company relies on advanced production equipment, professional technical personnel, unique ideas and ideas based on the market. We adhere to the customer-oriented, technology-based, quality of survival, integrity and development of the concept of development to serve the majority of customers. We continue to optimize efficient management mechanisms and process systems.
Shanghai Jinrui Norm Parts Supplies Co.,Ltd is one of the leading gb hex socket screw manufacturers and suppliers in China, welcome to buy gb hex socket screws, gb standard hex socket screw from our factory and company.
Shanghai Jinrui Norm Parts Supplies Co., Ltd. was built in 2001 which located in Baoshan District adjacent to the Bao Steel Group.Shanghai Jinrui is a fastener enterprise who owes a set of R & D, design, production and sales of high quality.Since the establishment of Jinrui, an annual production capacity of 10000 tons fasteners has been achieved.
Hex socket screw used in electric power facilities、electric appliance、chemical engineering mechanical equipment and so on.And usually used with nut and washer.And normal socket screw tensile strength is High to 1000Mpa and more.
Standard | Grade | Stainless steel | Finsh |
GB standard hex socket screw GB/T70.1 | 8.8 | 304 | white zinc |
10.9 | 316 | ||
12.9 |



With a positive and progressive attitude to customer's interest, our enterprise continually improves our products excellent to meet the wants of customers and further focuses on safety, reliability, environmental requirements, and innovation of DIN7991 Hex Socket Coutersunk Head Machine Screw in Black Grade4.8. Our range of products and services is continuously expanding to meet customers' requirements. Our pursuit and enterprise goal is to 'Always satisfy our customer requirements'.
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