Value Collection HC1XX20240 M20 Hex Head Cap Screw 316 Ss

Product Description

The VALUE COLLECTION HC1XX20240 is a metric hex head cap screw machined from Grade 316 austenitic stainless steel to the A4 material classification. It features an M20 x 2.50 thread profile with a 240 mm length under the head and a 30 mm hex drive. The shank is partially threaded in accordance with DIN 931, EN 24014, and ISO 4014, making it suited for fastening applications where a grip length under the head is required. At approximately 1 pound, this fastener is sized for structural and mechanical assemblies where corrosion resistance and dimensional precision are critical. Installers working in marine, chemical processing, food service, or outdoor environments specify Grade 316 for its superior chloride resistance compared to Grade 304.

This cap screw is used in industrial, commercial, and infrastructure applications requiring a heavy-duty metric fastener. Typical install scenarios include equipment frames, structural steel connections, pump and valve mounting, and marine hardware assemblies. The partially threaded shank provides a smooth bearing surface through the joint, which is preferred in bolted connections subject to shear loading. Machinists, millwrights, pipefitters, and maintenance mechanics are the primary trades handling this fastener size.

Key Features

• Grade 316 austenitic stainless steel with A4 classification for superior corrosion resistance in harsh and wet environments
• M20 x 2.50 thread profile conforming to metric standards
• 240 mm length under head with partial threading per DIN 931 and ISO 4014
• 30 mm hex drive compatible with standard metric wrenches and sockets
• Bright uncoated finish — no plating or coating that could interfere with dimensional tolerances
• Meets DIN 931, EN 24014, and ISO 4014 dimensional standards

Compatibility

Designed as a direct-fit metric hex head cap screw for M20 x 2.50 threaded fastener applications conforming to DIN 931, EN 24014, or ISO 4014 specifications. Suitable for use with standard M20 metric nuts and washers.

Installation Notes

Installation requires a 30 mm open-end wrench, combination wrench, or socket. Ensure mating threads are clean and free of debris before assembly. Grade 316 stainless fasteners are susceptible to galling under high torque — apply an appropriate anti-seize compound to the threads before installation. Follow applicable industry or equipment manufacturer torque specifications for M20 fasteners based on joint design and loading requirements.