GUWANJI 12.9 Grade High-Strength Hex Socket Head Cap Screw

GUWANJI 12.9 Grade High-Strength Hex Socket Head Cap Screws are made from blackened carbon steel, conforming to GB/T 70.1 standards. Designed for robust fastening applications, these screws offer superior strength and durability across various M12-M16 specifications.

Material Category: Class 12.9 Blackened Carbon Steel Hex Socket Head Cap Screw Specification: M12-M16 Material: Carbon Steel Surface treatment: Black grade: 12.9