Value Collection -42705-4 M3x0.5 Hex Socket Cap Screw 50pk

Product Description

The VALUE COLLECTION -42705-4 is a fully threaded hex socket cap screw in M3 x 0.50 metric thread, designed for precision fastening in tight-clearance assemblies. With a 20 mm length under head and a 12.9 material grade alloy steel construction, this screw delivers high tensile strength and reliable clamping force in demanding mechanical and structural applications. The black oxide finish provides moderate corrosion resistance and reduces light reflection on exposed fastener heads. Each package contains 50 pieces, making it a practical restocking option for maintenance shops, OEM assembly lines, and field service kits. Installation requires a standard hex socket (Allen) driver sized for M3 fasteners.

This screw is suited for light mechanical assemblies, machine components, jigs, fixtures, and equipment housings where a low-profile socket head and full thread engagement are required. The DIN 912 and ISO 898-1 standards compliance makes it appropriate for applications with defined torque and load specifications. Typical end users include maintenance technicians, machinists, and equipment assemblers working with metric-fastened assemblies in industrial, HVAC, and mechanical system environments.

Key Features

• M3 x 0.50 metric thread, fully threaded for maximum engagement along the 20 mm shank
• Grade 12.9 alloy steel construction for high tensile and proof load strength
• Black oxide coating for moderate corrosion resistance and reduced surface reflectivity
• Hex socket (Allen) drive for use in confined spaces where a standard wrench cannot fit
• Meets DIN 912 and ISO 898-1 fastener standards
• Packaged in a 50-piece quantity for shop stocking and bench inventory

Compatibility

Designed as a standard DIN 912 metric hex socket cap screw compatible with any M3 x 0.50 threaded hole requiring a fully threaded 20 mm fastener in alloy steel construction.

Installation Notes

Installation is performed with a correctly sized hex key or socket driver to avoid rounding the drive recess. Grade 12.9 fasteners should be torqued to the specification required by the host assembly design — do not substitute a lower-grade fastener in a 12.9-rated joint without engineering review. Confirm thread engagement and hole depth before installation to prevent bottoming out and false torque readings. Follow applicable fastener and mechanical assembly standards for the equipment being serviced.