Value Collection 015213PR Hex Socket Cap Screw 5/16-18 Unc

Product Description

The VALUE COLLECTION 015213PR is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling fixtures, and general industrial fabrication. It features a 5/16-18 UNC thread size and a 2-1/4-inch length under the head, driven by a 1/4-inch hex key. The alloy steel construction is finished with a black oxide coating that provides moderate corrosion resistance and reduces surface glare. This screw meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it suitable for demanding structural and mechanical fastening tasks where tensile strength and dimensional consistency are required.

This cap screw is used across a wide range of applications including machine component assembly, equipment maintenance, and precision fixture work. The partial threading allows the unthreaded shank to bear shear loads, making it well suited for applications where alignment and load distribution across the shank are needed. It is commonly installed in metal-to-metal joints in industrial equipment, HVAC mechanical assemblies, pump housings, and similar trade-service environments.

Key Features

• 5/16-18 UNC thread for reliable engagement in standard tapped holes
• 2-1/4-inch length under head with partial threading for shear load capability
• Alloy steel construction meets ASTM A574 for high tensile strength
• Black oxide finish provides mild corrosion resistance and low-glare surface
• 1/4-inch hex socket drive for use with standard hex keys and socket drivers
• Conforms to ASME/ANSI B18.3 and IFI 124 dimensional standards

Compatibility

Designed as a standard replacement or stock fastener for any application requiring a 5/16-18 UNC partially threaded hex socket cap screw with a 2-1/4-inch length under head, conforming to ASME/ANSI B18.3 dimensional requirements.

Installation Notes

Install using a calibrated 1/4-inch hex key or socket driver. Ensure the mating tapped hole is clean, free of debris, and properly sized for 5/16-18 UNC threading before installation. Power down and de-energize any associated equipment before performing fastener service on mechanical assemblies. Follow applicable torque specifications from the equipment manufacturer or relevant ASME standards for the joint material and application.