Value Collection 644256PS Hex Head Cap Screw M20 X 2.50

Product Description

The VALUE COLLECTION 644256PS is a metric hex head cap screw designed for structural and mechanical fastening applications. It features an M20 x 2.50 mm thread profile with a 140 mm length under head and is manufactured from Grade 8.8 steel with a bright, uncoated finish. The shank is partially threaded, which provides a stronger grip in load-bearing connections where a smooth shank section is required between clamped parts. This fastener conforms to DIN 931 and ISO 4014 standards. Machinists, millwrights, and maintenance technicians commonly use this screw in equipment assembly, structural steel connections, and industrial maintenance work.

This cap screw is suited for metric fastening applications in industrial machinery, heavy equipment, and structural assemblies. Its Grade 8.8 rating indicates a medium-high strength classification, making it appropriate for joints that require reliable clamping force without the need for a fully threaded shank. The 30 mm hex drive size accommodates standard metric sockets and wrenches commonly found in trade toolkits.

Key Features

• M20 x 2.50 mm metric thread profile conforming to DIN 931 and ISO 4014 standards
• 140 mm length under head with partial threading for load-bearing shank clearance
• Grade 8.8 steel construction for medium-high tensile strength applications
• Bright, uncoated finish suitable for dry or lightly oiled indoor environments
• 30 mm hex drive compatible with standard metric sockets and open-end wrenches
• Sold individually, allowing single-unit procurement for repair and replacement work

Compatibility

Designed as an OEM-style replacement or general-use metric fastener for industrial machinery, structural steel assemblies, and heavy equipment requiring DIN 931 or ISO 4014 compliant M20 x 2.50 hex head cap screws.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician using a calibrated torque wrench and the appropriate 30 mm metric socket or open-end wrench. Do not exceed the torque specifications listed in the equipment manufacturer service documentation for Grade 8.8 M20 fasteners. Inspect threads for damage before installation and ensure mating threads are clean and free of debris. Never use an impact driver on structural fasteners without verifying that the torque output is within the specified range for the joint.