Value Collection 872377PR Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 872377PR is a partially threaded hex socket cap screw designed for bolted assemblies requiring a strong, reliable fastener in a compact head profile. Sized at 1/2-13 UNC with a 4-inch length under the head, it accepts a 3/8-inch hex drive for installation with an Allen wrench or hex bit. Constructed from alloy steel with a zinc-plated finish, this cap screw delivers solid mechanical strength along with basic corrosion resistance. It meets ASME B18.8 and ASTM A574 standards, making it appropriate for structural and mechanical applications where fastener integrity matters.

This screw is suited for general industrial, mechanical, and equipment assembly work where a socket head cap screw profile is required. Partial threading is typical in applications where the unthreaded shank must pass through a clearance hole before engaging a tapped bore, providing accurate alignment and load-bearing performance. Fabricators, millwrights, equipment technicians, and maintenance professionals commonly install this type of fastener in machinery frames, jigs, fixtures, and structural steel assemblies.

Key Features

• 1/2-13 UNC thread size with partial threading for clearance-hole applications
• 4-inch length under head provides reach for thick material stacks
• 3/8-inch hex socket drive for Allen key or hex bit installation
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Zinc-plated finish provides basic corrosion resistance in indoor and sheltered environments
• Conforms to ASME B18.8 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard fastener for any application calling for a 1/2-13 UNC partially threaded hex socket cap screw with a 4-inch length under head, conforming to ASME B18.8 and ASTM A574 specifications.

Installation Notes

Install using a calibrated torque wrench with the correct 3/8-inch hex bit to avoid rounding the socket drive. Ensure the mating tapped hole is clean, properly sized, and free of debris before driving the fastener. De-energize and lock out any equipment before performing fastener installation or removal on machinery. Follow applicable ASME or facility torque guidelines based on fastener grade and joint requirements.