Value Collection 015381PR Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 015381PR is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, machinery, and structural connections. Sized at 1/2-13 UNC thread with a 5-inch length under head, this fastener is driven with a 3/8-inch hex key. The alloy steel construction with a black oxide finish provides solid corrosion resistance and is well suited for environments where a low-profile, high-clamping-force fastener is required. It meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it a code-compliant choice for precision fastening work.

This screw is appropriate for use in industrial equipment assembly, hydraulic and pneumatic system mounting, tool and die applications, and general mechanical maintenance. The partially threaded shank improves shear strength and allows for accurate clamping without thread engagement through the full grip length. Machinists, millwrights, pipefitters, and maintenance technicians commonly install this type of fastener in both original equipment and repair applications.

Key Features

• 1/2-13 UNC thread form for broad compatibility with standard tapped holes
• 5-inch length under head accommodates deeper grip lengths and thicker material stacks
• 3/8-inch hex drive for use with standard Allen keys and hex bit drivers
• Partially threaded shank improves shear load handling and clamping accuracy
• Alloy steel base material delivers high tensile and yield strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Meets ASME/ANSI B18.3, ASTM A574, and IFI 124 fastener standards

Compatibility

Designed as a standard-dimension replacement or production fastener for any application requiring a 1/2-13 UNC partially threaded hex socket cap screw with a 5-inch length under head.

Installation Notes

Installation is performed with a 3/8-inch hex key or socket hex bit. Ensure the mating tapped hole is clean, undamaged, and cut to the correct UNC thread profile before installation. Apply thread lubricant or anti-seize compound as appropriate for the service environment. Follow applicable mechanical and structural codes for torque requirements based on material and application context.