Value Collection 015209PR Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 015209PR is a hex socket cap screw designed for high-strength fastening applications across mechanical, industrial, and fabrication work. The screw features a 5/16-18 UNC thread size with 1-3/4 inches of length under the head and is partially threaded. Drive engagement is made with a 1/4 inch hex key. Constructed from alloy steel with a black oxide finish, this fastener resists corrosion and wear under demanding service conditions. It meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it suitable for precision-critical assemblies.

This cap screw is well suited for machinery maintenance, equipment assembly, and structural fastening where a recessed drive and clean head profile are required. The partial threading engages tightly in threaded bores without bottoming out in blind holes. The black oxide coating reduces light reflection and provides mild corrosion resistance in dry or lightly oiled environments. Machinists, millwrights, and maintenance mechanics commonly use this fastener type in production and service settings.

Key Features

• 5/16-18 UNC thread for reliable engagement in standard inch-thread bores
• 1-3/4 inch length under head for moderate-depth fastening applications
• Partially threaded shank for precise clamping and positioning in blind holes
• 1/4 inch hex drive for standard Allen wrench or hex bit installation
• Alloy steel construction for high tensile strength under load
• Black oxide finish for corrosion resistance and low-glare appearance

Compatibility

Designed as a standard replacement or service fastener for any application requiring a 5/16-18 UNC hex socket cap screw with 1-3/4 inch length under head, conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Install using a calibrated 1/4 inch hex key or socket bit driver. Ensure mating threads are clean and free of debris before installation. Torque to the value specified by the equipment manufacturer for the applicable joint class. Always power down or de-energize equipment before accessing fastened assemblies in live machinery.