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A2 70 A4 80 M8 DIN7991 Stainless Steel Hex Socket Countersunk Head Screws
Jiaxing Haina Fastener Co., Ltd. was established in 2010 and is located in Jiaxing City, the hometown of fasteners. With over a decade of export experience, our products have become popular in Europe, the United States, the Middle East, and Southeast Asia. Our manufacturing process utilizes advanced machinery from both domestic and international renowned enterprises, ensuring high-quality output that fully complies with international standards. The products are well-received by customers both domestically and internationally. Through scientific management practices, Jiaxing Haina Fastener has obtained ISO 9001 certification for its Quality Management System, as well as SGS and BV international certifications for Made-in-China products.
Countersunk head screws are commonly used when there is a raised surface on a part where the fastening components cannot be placed. There are two types of thickness: thick and thin. In the case of "thick," the thickness of the part being fastened is greater than the height of the countersunk screw head after tightening, meaning no part of the screw thread enters the threaded hole. In such situations, countersunk head screws are definitely required. On the other hand, when the thickness of the part being fastened is less than the height of the countersunk screw head, it is common in sheet metal parts used in machinery and equipment, such as hinges, cabinet doors, and chassis couplings. This type of screw is also frequently used in sheet metal enclosures and coupling devices.
Model NO.: DIN 7991
Grade: A2 70
Trademark: HNF
Transport Package: Carton and Pallet
Specification: A2 70 M8
Origin: China
HS Code: 7318150000
