XunLiu Hex Socket Head Cap Screws - 3mm M16

PREMIUM GRADE 129 ALLOY STEEL Highstrength 40Cr alloy steel construction with 1220 Nmm tensile strength HRC 3944 hardness rating ensures exceptional durability and resistance to stripping under mechanical stress PRECISION DIN912 COMPLIANCE Metric M16x3mm length with 024mm tolerance 3D printing components and micromechanical applications ANTIRUST BLACK OXIDE FINISH Professional black oxide coating offers superior corrosion protection and clean aesthetic appearance ideal for visible electronics mounting robotics projects and precision instrument assembly VERSATILE MICROFASTENER APPLICATIONS Perfect for Rapido hotends Corsair radiator repairs tiny whoop drone propellers PCB mounting small motor assembly watch repair eyeglass hinges and delicate electronic components VALUE PACK WITH QUALITY ASSURANCE 50piece quantity 5 tolerance in convenient packaging wellmade construction with consistent thread forming prevents easy stripping backed by verified customer satisfaction for professional and hobbyist use