Holo-krome 72336 Hex Socket Cap Screw 3/4-10 Unc 8 in

Product Description

The HOLO-KROME 72336 is a hex socket cap screw engineered for heavy-duty fastening applications requiring high tensile strength and corrosion resistance. Manufactured from alloy steel with a black oxide finish, this fastener meets ASME B18.3 and ASTM A574 standards. It features a 3/4-10 UNC thread size, an 8-inch length under head, and a 5/8-inch hex drive socket. The partial threading is designed to provide clamping force through the unthreaded shank while maintaining thread engagement where it counts. Commonly installed by millwrights, industrial mechanics, and structural technicians working on machinery, equipment frames, and heavy assemblies.

This cap screw is suited for industrial, commercial, and OEM assembly environments where high-strength fasteners are required. The 3/4-10 UNC coarse thread provides reliable engagement in steel and cast iron bores, making it a standard choice for machine bases, jigs, fixtures, and structural steel connections. The black oxide coating provides mild corrosion resistance and reduces light glare on the fastener head in service environments.

Key Features

• Alloy steel construction meets ASTM A574 high-strength socket cap screw requirements
• Conforms to ASME B18.3 dimensional standards for hex socket fasteners
• 3/4-10 UNC coarse thread for reliable engagement in standard tapped holes
• 8-inch length under head accommodates thick stack-ups and long-reach fastening
• 5/8-inch hex socket drive for use with standard hex keys and socket tooling
• Black oxide finish provides mild corrosion resistance and a uniform dark appearance
• Partially threaded shank delivers clamping load through the smooth body section

Compatibility

Designed as a standard-dimension hex socket cap screw per ASME B18.3, compatible with any 3/4-10 UNC tapped hole requiring a partially threaded, 8-inch length-under-head fastener in alloy steel construction.

Installation Notes

Installation should be performed by a qualified mechanic or millwright using a calibrated torque wrench and the appropriate 5/8-inch hex key or drive socket. Ensure the mating tapped hole meets 3/4-10 UNC thread specifications and is free of debris before installation. Follow applicable industry torque guidelines for ASTM A574 alloy steel cap screws. Do not use impact tooling at final torque without a torque-limiting attachment.