Value Collection 011403PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 011403PR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, machinery, and structural components. This fastener features a 1/2-20 UNF thread size with a 2-1/4 inch length under the head and is driven with a 3/8 inch hex key. Constructed from alloy steel with a black oxide finish coating, it delivers corrosion resistance and a clean, low-glare appearance. The partial threading design provides clamping force where it matters most. Machinists, millwrights, and maintenance technicians working on precision equipment will find this screw suitable for demanding load-bearing installations.

This screw is used in applications requiring fine-thread engagement and high tensile strength, including industrial equipment assembly, tooling fixtures, machine frames, and general mechanical fabrication. The 1/2-20 UNF thread pitch offers tighter thread engagement than coarse-thread equivalents, making it appropriate where vibration resistance or precision torque control is important. The black oxide coating is common in shop and industrial environments where a non-reflective surface finish is preferred. This fastener is sold in minimum order quantities of 10 pieces.

Key Features

• 1/2-20 UNF fine thread for tight engagement and vibration resistance
• 2-1/4 inch length under head for moderate-depth fastening applications
• Alloy steel construction for high tensile and shear strength
• Black oxide finish coating for corrosion resistance and low-glare appearance
• Partially threaded shank for accurate clamping in bolted joints
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard hex socket cap screw for use in any application requiring a 1/2-20 UNF thread pattern with a 3/8 inch hex drive and a 2-1/4 inch length under head.

Installation Notes

Installation requires a 3/8 inch hex key or Allen driver. Power down any equipment and relieve any mechanical loads before replacing fasteners in load-bearing assemblies. Follow applicable ASME torque guidelines for the fastener grade and thread size. Verify thread engagement depth in the mating component before final tightening to avoid stripping or under-seating.