Value Collection 644238PS Hex Head Cap Screw M20 X 2.50

Product Description

The VALUE COLLECTION 644238PS is a metric hex head cap screw designed for medium-to-high-strength bolted assemblies in mechanical, structural, and industrial applications. It carries a Grade 8.8 steel rating, indicating a tensile strength suitable for demanding fastening jobs where reliability under load is required. The fastener features partial threading along an 80 mm shank, which helps maintain shank integrity in clearance-hole installations. Manufactured to DIN 931 and ISO 4014 standards, this screw is appropriate for use by millwrights, maintenance mechanics, pipefitters, and general industrial trades working on metric-fastened equipment.

This cap screw is a standard fit for metric machinery, structural steel connections, equipment frames, and general assembly work requiring an M20 x 2.50 thread profile. The partially threaded design is common in through-bolt and load-bearing applications where the unthreaded shank provides shear resistance. It is well suited for both original assembly and field replacement in manufacturing facilities, infrastructure maintenance, and heavy equipment service.

Key Features

• M20 x 2.50 metric thread size for compatibility with standard metric nuts and tapped holes
• 80 mm length under head with partial threading for shear-capable through-bolt installations
• Grade 8.8 steel construction providing proven medium-high tensile strength
• Bright uncoated finish for straightforward inspection and dimensional verification
• 30 mm hex size for use with standard metric wrenches and sockets
• Conforms to DIN 931 and ISO 4014 dimensional and mechanical standards

Compatibility

Designed as a standard DIN 931 and ISO 4014 compliant replacement or assembly fastener for metric bolted connections requiring an M20 x 2.50 thread and 80 mm length under head.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson familiar with metric fastener specifications and torque requirements. Always verify thread engagement depth and clearance hole dimensions before installation. Use a calibrated torque wrench appropriate for Grade 8.8 fasteners and follow the equipment manufacturer's torque specifications. Do not mix metric and unified fasteners in the same joint.