Holo-krome 72376 Hex Socket Cap Screw 1-8 Unc Alloy Steel

Product Description

The HOLO-KROME 72376 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, machinery, and structural connections. It features a 1-8 UNC thread size with a 3-inch length under head and accepts a 3/4-inch hex drive. Manufactured from alloy steel and finished with a black oxide coating, this fastener delivers corrosion resistance and reduced surface glare without dimensional interference. The fully threaded body provides consistent thread engagement across the full working length. Licensed tradespeople, millwrights, and maintenance mechanics working on industrial equipment or heavy fabrication rely on this fastener for secure, load-bearing connections.

This screw is suited for use in commercial and industrial settings where high-tensile fasteners are required. Typical applications include securing machine components, fixtures, tooling plates, and structural frames where socket drive access is limited or flush seating is needed. The black oxide finish makes it a common choice in environments where surface appearance and mild corrosion resistance are considerations alongside mechanical performance.

Key Features

• 1-8 UNC thread form for use in standard coarse-thread tapped holes
• 3-inch length under head provides substantial thread engagement for heavy-load applications
• 3/4-inch hex socket drive for high-torque installation with standard Allen or hex keys
• Fully threaded body for maximum clamping versatility across joint thicknesses
• Alloy steel construction meets ASME B18.3 and ASTM A574 fastener standards
• Black oxide finish for mild corrosion resistance and low-reflectance appearance

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for applications requiring 1-8 UNC coarse-thread hex socket cap screws per ASME B18.3 and ASTM A574 specifications.

Installation Notes

Installation is performed by mechanics, millwrights, or maintenance technicians using a 3/4-inch hex key or socket driver. Always ensure the mating tapped hole is clean, free of debris, and properly threaded before installation. De-energize and lock out equipment before servicing fasteners on live machinery per applicable OSHA lockout/tagout procedures. Do not substitute lubricants or thread compounds unless the joint specification accounts for the resulting change in clamp load.