Value Collection 581747BR Hex Socket Cap Screw 3/4-16 Unf

Product Description

The VALUE COLLECTION 581747BR is a hex socket cap screw designed for high-strength fastening in mechanical, industrial, and trade applications. It features a 3/4-16 UNF thread size with 6-1/2 inches of length under the head and partial threading along the shank. The drive is a 5/8-inch hex socket, requiring a standard hex key or Allen drive tool. Constructed from alloy steel with a black oxide finish, this screw offers solid corrosion resistance and surface hardness for demanding environments. It meets ASME/ANSI B18.3 and ASTM A574 standards, confirming dimensional accuracy and mechanical performance.

This screw is suited for use in machinery assembly, fixture mounting, and structural fastening applications where a recessed drive and high clamping force are required. The partially threaded shank allows for precise clamping without thread engagement through the full grip length, making it a common choice in precision mechanical assemblies, jigs, and equipment frames. It is typically installed by machinists, millwrights, maintenance technicians, and mechanical contractors.

Key Features

• 3/4-16 UNF thread for fine-pitch, high-strength engagement
• 6-1/2 inches length under head with partial threading for controlled clamp load
• 5/8-inch hex socket drive for high-torque installation with standard tooling
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance and reduced glare
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard fastener for applications requiring a 3/4-16 UNF hex socket cap screw with a 6-1/2-inch length under head and 5/8-inch drive, conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation should be performed by a qualified mechanic or technician using a calibrated torque wrench and the correct 5/8-inch hex key or drive bit. Always ensure the mating threaded hole is clean, properly tapped to 3/4-16 UNF, and free of debris before installation. De-energize and lock out any equipment before fastener service per applicable safety procedures. Do not use impact tools without verifying torque compliance with the assembly specification.