XunLiu Grade 109 Alloy Steel Button Head Hex Socket Screws M4X50

GRADE 109 ALLOY STEEL WITH SUPERIOR STRENGTH Heattreated hightensile alloy steel delivers exceptional 150000 PSI minimum tensile strength with outstanding shear and fatigue resistance engineered for highstress applications including machinery assembly automotive components and industrial fixtures requiring maximum durability ZINCPLATED CORROSION PROTECTION Professionalgrade zinc plating provides reliable protection against rust and oxidation in various environments extends fastener lifespan and maintains appearance across industrial automotive and demanding outdoor applications without coating failures LOWPROFILE BUTTON HEAD DESIGN Precisionengineered rounded head minimizes protrusion reduces clearance issues and delivers sleek finished appearance ideal for precision assemblies where aesthetic quality and compact fitting are critical requirements INTERNAL HEX SOCKET DRIVE Allen hex socket drive enables hightorque tightening with reduced camout risk compared to Phillips heads compatible with standard hex wrenches and power driver bits for efficient installation across variable applications and project scales VERSATILE SIZING BULK AVAILABILITY M4X5050pcsmetric specifications with available quantities 1050100 packs accommodate small precision projects through largescale industrial assembly metric threading ensures compatibility with European and international standards and specifications