Holo-krome 76656 M2.5x0.45 Hex Socket Cap Screw Alloy Steel

Product Description

The HOLO-KROME 76656 is a metric hex socket cap screw with an M2.5 x 0.45 thread and 6 mm length under head. It is manufactured from alloy steel to material grade 12.9, placing it in the highest common strength class for metric fasteners. A black oxide finish provides a degree of corrosion resistance and a uniform dark appearance. The drive type is internal hex, requiring a properly sized hex key or Allen-style driver for installation. This fastener is fully threaded along its shank and conforms to ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards. It is used by mechanical assemblers, maintenance technicians, and precision equipment installers across industrial and commercial applications.

This screw is suited for light-duty precision assemblies where a small-diameter, high-strength metric fastener is required. Typical applications include machinery, electronic enclosures, instrumentation panels, and any assembly where a compact, flush-seating cap screw with a recessed hex drive is specified. The 6 mm length under head makes it appropriate for shallow through-hole or tapped-hole installations in metal components. This item is sold individually but carries a minimum order quantity of 100 pieces, making it appropriate for shop stock, production runs, and service kits that require consistent supply of small metric hardware.

Key Features

• M2.5 x 0.45 metric thread with 6 mm length under head
• Grade 12.9 alloy steel construction for high tensile and proof load strength
• Black oxide finish for surface protection and low-reflectance appearance
• Fully threaded shank for maximum thread engagement in shallow tapped holes
• Internal hex drive for precise torque application in tight spaces
• Compliant with ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards

Compatibility

Designed as a standard metric hex socket cap screw per DIN 912 and ISO 4762 for use in any application specifying an M2.5 x 0.45 fully threaded socket head cap screw with 6 mm length under head.

Installation Notes

Installation is performed with an appropriate metric hex key or socket driver sized for the M2.5 head. De-energize, depressurize, or lock out the assembly before servicing any fastened components. Grade 12.9 fasteners should not be substituted into joints originally designed for lower-grade hardware without reviewing the joint design. Follow the equipment manufacturer torque specifications or applicable industry standards when tightening.