Holo-krome 72394 Hex Socket Cap Screw 1-8 Unc 7 in

Product Description

The HOLO-KROME 72394 is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling fixtures, and industrial equipment. It features a 1-8 UNC thread size and measures 7 inches in length under the head, making it suitable for clamping through thicker workpieces or structural members. The 3/4-inch hex drive socket requires a standard hex key or Allen driver. Manufactured from alloy steel with a black oxide coating, this fastener delivers the tensile strength and surface protection demanded in demanding shop and field environments. Installation is performed by machinists, millwrights, and maintenance technicians working to ASME B18.3 dimensional standards.

This cap screw is suited for use in heavy machinery, press frames, die sets, conveyor structures, and general industrial fabrication where a high-strength, large-diameter fastener is required. The 1-8 UNC coarse thread provides reliable engagement in tapped steel and iron components. The partial threading allows the unthreaded shank to bear shear loads without thread deformation, a common requirement in precision fixture and jig assembly work.

Key Features

• 1-8 UNC coarse thread for strong engagement in tapped steel and cast iron
• 7-inch length under head accommodates deep clamping and thick structural members
• Partially threaded shank handles shear loads without thread damage
• 3/4-inch hex socket drive for use with standard hex keys or Allen drive tools
• Alloy steel construction meets ASME B18.3 and ASTM A574 mechanical requirements
• Black oxide finish provides moderate corrosion resistance and reduces surface glare

Compatibility

Designed as an OEM-style and aftermarket replacement hex socket cap screw conforming to ASME B18.3 and ASTM A574 standards, compatible with any tapped 1-8 UNC threaded hole requiring a socket head cap fastener.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a calibrated torque wrench with a 3/4-inch hex bit. De-energize and lock out all equipment before removing or installing fasteners in live machinery per applicable OSHA lockout/tagout procedures. Apply thread lubricant or anti-seize as required by the application to achieve accurate clamp load. Do not exceed the rated tensile strength of the tapped material when torquing into softer base metals.