Value Collection 015273PR Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 015273PR is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and structural connections. Manufactured from alloy steel with a black oxide finish, this fastener meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards for dimensional accuracy and mechanical performance. The 3/8-16 UNC thread size and 3-1/4 inch length under head make it suitable for medium-to-heavy clamping loads. The 5/16 inch hex drive socket interface provides positive torque transfer with standard hex keys or socket drivers. This screw is used by machinists, millwrights, pipefitters, and general mechanical trade professionals.

This cap screw is appropriate for use in industrial machinery, HVAC equipment frames, structural brackets, and mechanical assemblies that require a recessed-drive fastener with a clean seating surface. Partial threading allows the unthreaded shank to act as a locating or shoulder feature in close-tolerance bores, making it a practical choice for precision fixture work and equipment mounting where alignment matters.

Key Features

• 3/8-16 UNC thread for compatibility with standard inch-series tapped holes
• 3-1/4 inch length under head for medium-depth fastening applications
• Partially threaded shank for shear-load resistance and precision alignment
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance in dry or lightly oiled environments
• 5/16 inch hex socket drive for use with standard Allen keys or hex socket tools

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any 3/8-16 UNC tapped hole requiring a recessed-drive fastener with a 3-1/4 inch grip length.

Installation Notes

Installation is performed by machinists, maintenance technicians, or mechanical tradespeople using a 5/16 inch hex key or socket driver. Ensure the tapped hole is clean and free of debris before threading the fastener. Do not exceed the design torque rating for the fastener grade and thread size as specified in applicable ASME or IFI fastener standards. Black oxide finish is not a heavy corrosion barrier — apply a thread lubricant or anti-seize compound if fasteners will be exposed to moisture or dissimilar metals.