Value Collection 42802 M20 X 2.50 Hex Socket Cap Screw

Product Description

The VALUE COLLECTION 42802 is a metric hex socket cap screw designed for high-strength fastening in industrial, mechanical, and structural applications. With an M20 x 2.50 thread size and an 80 mm length under head, this screw is partially threaded and features a hex socket drive for precise torque application with a standard hex key or socket driver. Manufactured from alloy steel to material grade 12.9, it carries a black oxide finish that provides moderate corrosion resistance and reduces galling during installation. Licensed fastener professionals, maintenance mechanics, and industrial assembly technicians are the typical installers.

This screw is suited for heavy-duty bolted assemblies where high clamp load is required. The grade 12.9 alloy steel construction makes it appropriate for machine bases, hydraulic equipment, tooling fixtures, and similar applications where fastener strength is critical. The partial threading allows the unthreaded shank to bear shear loads, a common design requirement in precision equipment and close-tolerance bores. It conforms to DIN 912 and ISO 898-1 fastener standards, making it interchangeable with other metric socket cap screws built to those specifications.

Key Features

• M20 x 2.50 thread size with 80 mm length under head
• Partially threaded shank for shear load applications and close-tolerance fits
• Grade 12.9 alloy steel for high tensile and proof load capacity
• Black oxide finish for moderate corrosion resistance and reduced surface galling
• Hex socket drive compatible with standard hex keys and socket drivers
• Conforms to DIN 912 and ISO 898-1 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-fit metric socket cap screw for any application requiring a DIN 912 or ISO 898-1 compliant M20 x 2.50 partially threaded fastener.

Installation Notes

Installation should be performed by a qualified mechanic or assembly technician familiar with metric fastener torque requirements for grade 12.9 hardware. Always verify that the mating threaded hole or nut is rated for grade 12.9 loads before installation. Use a calibrated torque wrench and the appropriate hex key or socket; do not use impact tools that exceed the designed clamp load. Inspect threads for damage or contamination before assembly.