Holo-krome 72286 Hex Socket Cap Screw 5/8-11 Unc Alloy Steel

Product Description

The HOLO-KROME 72286 is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 5/8-11 UNC thread size with a 4-inch length under head and accepts a 1/2-inch hex drive. The fastener is partially threaded and manufactured from alloy steel with a black oxide finish, which provides mild corrosion resistance and reduces surface reflectivity. Licensed tradespeople and industrial maintenance technicians rely on this type of cap screw where high clamp load and precise torque control are required. It meets ASME B18.3 and ASTM A574 standards.

This cap screw is suited for use in machinery frames, equipment mounting, jigs, fixtures, and structural steel connections where a recessed drive head is required for flush or counter-bored installations. The 5/8-11 UNC coarse thread is appropriate for general-purpose fastening in carbon steel, cast iron, and similar base materials. Machinists, millwrights, and maintenance technicians commonly specify this fastener in manufacturing and heavy equipment environments.

Key Features

• 5/8-11 UNC coarse thread for broad material compatibility
• 4-inch length under head, partially threaded
• 1/2-inch hex socket drive for high-torque wrench or Allen key engagement
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides mild corrosion resistance and low-glare surface
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as a standard 5/8-11 UNC hex socket cap screw per ASME B18.3, compatible with any application requiring that thread size and a 1/2-inch hex drive in a partially threaded, 4-inch under-head length configuration.

Installation Notes

Installation should be performed by qualified tradespeople using a calibrated torque wrench and the appropriate 1/2-inch hex key or drive bit. De-energize and lock out all associated equipment before fastener installation or removal in live machinery. Ensure mating threads are clean and free of debris before assembly. Do not exceed the rated proof load for ASTM A574 alloy steel fasteners; consult applicable engineering references for torque specifications based on joint material and lubrication conditions.