Value Collection HC1XX20100-001BX M20 Hex Cap Screw Din 931

Product Description

The VALUE COLLECTION HC1XX20100-001BX is a metric hex head cap screw manufactured from Grade 316 austenitic stainless steel, Austenitic Grade A4. It measures M20 x 2.50 thread pitch with a 100 mm length under the head and is partially threaded per DIN 931. The 30 mm hex drive size accommodates standard open-end, box, or socket wrenches. Grade 316 stainless provides elevated corrosion resistance compared to Grade 304, making it suitable for wet, marine, chemical-contact, and outdoor structural applications. Tradespeople and maintenance technicians use this fastener where both mechanical strength and environmental resistance are required in a single metric fastener.

This screw is appropriate for structural and mechanical assemblies in industrial, marine, process-piping, HVAC equipment, and plumbing fixture installations where metric hardware is specified. The partial threading per DIN 931 allows the unthreaded shank to bear shear loads, which is a common requirement in bracket, flange, and equipment-mounting applications. It installs with a standard metric wrench or socket in the 30 mm drive size.

Key Features

• Grade 316 austenitic stainless steel, Austenitic Grade A4, for superior corrosion resistance in wet and chemical environments
• Partially threaded shank per DIN 931 for shear-load-bearing installations
• M20 x 2.50 thread pitch, 100 mm length under head
• 30 mm hex drive compatible with standard metric wrenches and sockets
• Bright uncoated finish, no added plating or coating that could introduce dimensional variation
• Metric thread standard for use in internationally dimensioned assemblies

Compatibility

Designed as an OEM-style replacement or maintenance fastener for metric assemblies requiring an M20 x 2.50 x 100 mm partially threaded hex head cap screw conforming to DIN 931.

Installation Notes

This fastener is typically installed by licensed tradespeople, millwrights, pipefitters, or maintenance technicians working on metric-dimensioned equipment. Always de-energize, depressurize, or otherwise isolate the assembly before removing or replacing structural fasteners. Use calibrated torque equipment appropriate for M20 fasteners and follow the torque specifications provided in the original equipment or assembly documentation. Grade 316 stainless fasteners are susceptible to galling during installation; apply an appropriate anti-seize compound when specified by the assembly documentation.