Value Collection 015387PR Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 015387PR is a partially threaded hex socket cap screw designed for high-strength bolted connections in industrial, mechanical, and structural applications. Manufactured from alloy steel with a black oxide finish, this fastener measures 6.5 inches in length under the head and uses a 3/8-inch hex drive socket. The 1/2-13 UNC thread form provides a coarse pitch suited for general-purpose fastening into steel, aluminum, and similar materials. It meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, confirming dimensional and mechanical property compliance. Machinists, millwrights, and maintenance technicians commonly use this size in machine assemblies, jigs, fixtures, and equipment frames.

This cap screw is suited for applications requiring a recessed drive to avoid interference with mating components or surrounding structure. The partial threading allows the unthreaded shank to act as a locating or bearing surface within a clearance hole, distributing shear load across the shank rather than the threaded portion. Typical use cases include securing machine bases, mounting brackets, bearing housings, and fabricated steel assemblies where high clamp load and precise alignment are required. The black oxide coating provides light corrosion resistance and reduces galling during installation.

Key Features

• 1/2-13 UNC coarse thread for broad compatibility with standard tapped holes
• 6.5 inches length under head with partial threading for shear-bearing shank applications
• 3/8-inch hex socket drive for high-torque installation with standard hex keys or socket drivers
• Alloy steel construction for high tensile and yield strength per ASTM A574
• Black oxide finish provides mild corrosion resistance and reduces light reflectivity
• Conforms to ASME/ANSI B18.3, ASTM A574, and IFI 124 dimensional and mechanical standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw, compatible with any 1/2-13 UNC tapped hole or threaded insert requiring a 3/8-inch internal hex drive fastener in this length.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance mechanics using a 3/8-inch hex key, T-handle, or socket drive tool. Always ensure the mating threaded hole is clean, properly tapped to 1/2-13 UNC, and free of debris before installation. De-energize and lock out all equipment before fastener replacement or tightening in live machinery per applicable OSHA lockout/tagout procedures. Do not use impact drivers on socket cap screws unless the tool is set to a controlled torque appropriate for the joint; refer to the equipment manufacturer torque specification for the assembly.