Holo-krome 76508 Hex Socket Cap Screw M20 X 2.50 70mm

Product Description

The HOLO-KROME 76508 is a fully threaded hex socket cap screw designed for high-strength fastening applications in industrial and mechanical assemblies. The screw features an M20 x 2.50 metric thread profile with a 70 mm length under head, equivalent to approximately 2.756 inches. Manufactured from alloy steel to material grade 12.9, it delivers exceptional tensile strength and shear resistance. A black oxide coating provides a base level of corrosion resistance and a consistent dark finish. This fastener is installed using a hex socket drive, making it suitable for flush or recessed installation in confined spaces.

This screw is used in heavy-duty mechanical, structural, and industrial assembly work where a high-strength metric fastener is required. The M20 size is common in machinery frames, equipment mounts, industrial presses, and structural brackets. Its fully threaded design allows engagement along the entire shank length, which is particularly useful when threading into blind holes or when maximum clamp load is needed across the full fastener length. Trade professionals, millwrights, and maintenance technicians working on industrial equipment or commercial machinery typically install this fastener.

Key Features

• M20 x 2.50 metric thread size with 70 mm length under head
• Fully threaded shank for maximum thread engagement
• Alloy steel construction at material grade 12.9 for high tensile strength
• Black oxide finish for corrosion resistance and low-glare appearance
• Hex socket drive for recessed or torque-sensitive installations
• Meets ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards

Compatibility

Designed as a direct-fit metric fastener for assemblies requiring an M20 x 2.50 socket cap screw conforming to DIN 912 or ISO 4762 dimensional standards.

Installation Notes

Installation requires an appropriately sized hex socket driver or Allen key rated for grade 12.9 fastener torque loads. Ensure the mating threaded hole is clean and free of debris before installation. Power down or de-energize any equipment before servicing fasteners on live machinery. Do not substitute this fastener with a lower material grade screw in high-load applications.