Value Collection 815978PS M20 Hex Cap Screw Grade 8.8 Zinc

Product Description

The VALUE COLLECTION 815978PS is a metric hex head cap screw designed for general industrial and mechanical fastening applications. Built from Grade 8.8 steel with a zinc-plated finish, this screw measures M20 x 2.50 thread pitch with a 70 mm length under the head and is partially threaded. The 30 mm hex drive makes it compatible with standard metric wrenches and sockets. It conforms to DIN 931 and ISO 4014 dimensional standards, making it a reliable choice for engineers, millwrights, maintenance technicians, and fabricators who require a traceable, spec-compliant fastener for structural or machinery assemblies.

This fastener is suited for medium-to-heavy-duty bolted joint applications in industrial machinery, structural steel fabrication, equipment mounting, and general mechanical assembly. Its partial thread design provides a smooth shank section, which is preferred in applications requiring a bolt to pass through a clearance hole before engaging the threaded joint. It is sold individually and is appropriate wherever a metric M20 coarse-thread fastener meeting DIN 931 or ISO 4014 is specified.

Key Features

• Grade 8.8 steel construction provides high tensile strength for demanding bolted joint applications
• Zinc-plated finish offers baseline corrosion resistance in dry and mildly humid environments
• Partially threaded shank allows precise clamping without thread engagement through clearance holes
• 30 mm hex size accommodates standard metric wrenches and impact sockets
• Conforms to DIN 931 and ISO 4014 standards for dimensional and mechanical consistency
• Metric M20 x 2.50 coarse thread pitch for broad tooling and nut compatibility

Compatibility

Designed as a standard DIN 931 and ISO 4014 compliant M20 x 2.50 hex head cap screw, compatible with any M20 coarse-thread nut or tapped hole meeting the same metric thread standard.

Installation Notes

Installation is typically performed by millwrights, maintenance technicians, or mechanical assemblers using a metric wrench or impact socket sized for a 30 mm hex. Always de-energize and lock out equipment before fastener replacement in machinery applications. Torque to the value specified in the equipment manufacturer documentation or applicable engineering specification — do not apply an assumed torque value. Inspect mating threads and seating surfaces for damage before installation.