Holo-krome 76655 M2.5x0.45 Hex Socket Cap Screw 5mm

Product Description

The HOLO-KROME 76655 is a metric hex socket cap screw designed for precision fastening in machinery, equipment assemblies, and close-tolerance applications. It features an M2.5x0.45 thread with a 5 mm length under the head and is fully threaded along its entire shank. Manufactured from alloy steel to material grade 12.9, it delivers high tensile strength suited for demanding mechanical connections. The black oxide finish provides a measure of corrosion resistance and reduces light reflection in sensitive assemblies. This screw is driven with a hex (Allen) key socket, making it a standard choice for compact or recessed fastening locations where a conventional bolt head will not fit.

This fastener is used in light industrial, precision mechanical, and OEM assembly applications where a small-diameter, high-strength metric cap screw is required. The M2.5 thread size is common in instrumentation panels, motor mounts, enclosure hardware, electrical equipment, and small mechanical subassemblies. The fully threaded configuration ensures maximum thread engagement across the full 5 mm usable length. Technicians in HVAC equipment manufacturing, electrical panel assembly, and general mechanical maintenance will encounter this fastener in factory-assembled components requiring exact metric hardware replacements.

Key Features

• M2.5x0.45 metric thread, fully threaded shank for maximum engagement
• 5 mm length under head suits shallow clearance and compact assemblies
• Alloy steel construction at grade 12.9 for high tensile and proof load capacity
• Black oxide finish for mild corrosion resistance and reduced surface reflectivity
• Hex socket drive (Allen key) allows installation in recessed or tight-clearance locations
• Meets ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards

Compatibility

Designed as an OEM-style replacement or service fastener for any assembly requiring a fully threaded M2.5x0.45 hex socket cap screw with a 5 mm length under the head, conforming to DIN 912 and ISO 4762 dimensional standards.

Installation Notes

Installation is performed with the appropriate metric hex key or Allen driver sized for the M2.5 socket. Always verify thread engagement depth and torque to the fastener grade specification listed in the equipment service documentation before applying final load. Do not mix metric and inch-series fasteners in the same assembly. Replace any fastener showing signs of thread damage, corrosion, or deformation rather than reusing it.