Holo-krome 76478 Hex Socket Cap Screw M16x2 130mm Alloy Steel

Product Description

The HOLO-KROME 76478 is a metric hex socket cap screw engineered for high-strength fastening applications across industrial, mechanical, and trade assembly work. It features an M16 x 2.00 thread profile with a 130 mm length under head and is partially threaded along the shank. Manufactured from alloy steel at material grade 12.9, it carries a black oxide finish coating that provides moderate corrosion resistance and reduces light reflection on exposed fastener heads. The internal hex drive accepts a standard hex key for installation and removal. This fastener is installed by millwrights, maintenance mechanics, pipefitters, and mechanical contractors.

This screw is suited for bolted assemblies requiring high clamp load, including machinery frames, hydraulic component mounting, structural brackets, and heavy equipment fabrication. The grade 12.9 alloy steel construction delivers tensile strength appropriate for demanding mechanical joints where standard hardware-grade fasteners are insufficient. The black oxide finish is commonly specified in applications where a low-profile, non-reflective fastener appearance is required alongside moderate surface protection.

Key Features

• M16 x 2.00 metric thread, partially threaded shank
• 130 mm length under head for deep-reach bolted joints
• Grade 12.9 alloy steel construction for high tensile strength
• Black oxide finish coating for moderate corrosion resistance and reduced glare
• Internal hex socket drive for precise torque application with hex keys
• Compliant with ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 standards

Compatibility

Designed as a standard metric hex socket cap screw conforming to DIN 912 and ISO 4762, making it interchangeable with any application specifying an M16 x 2.00 partially threaded socket head cap screw at grade 12.9.

Installation Notes

Installation requires a correctly sized metric hex key or socket hex bit rated for high-torque applications. Always verify mating thread condition and thread engagement depth before final assembly. Apply appropriate thread lubricant or thread-locking compound per the assembly specification. Inspect the fastener seating surface to ensure full, even contact under the cap head before torquing to the value specified in the equipment or assembly documentation.