Value Collection 701159PR Button Socket Cap Screw 5/16-24

Product Description

The VALUE COLLECTION 701159PR is a fully threaded button socket cap screw designed for applications requiring a low-profile head and high clamping strength. It features a 5/16-24 UNF thread with a 3/16 inch hex socket drive and a 1-1/4 inch length under head. Manufactured from alloy steel with a black oxide finish, it meets ANSI/ASME B18.3 and ASTM F835 standards. The hardness range of 36-43 HRC makes it suitable for demanding mechanical assemblies where strength and a clean appearance are required. Licensed tradespeople and machinists install this fastener in precision assemblies across industrial and mechanical applications.

This button socket cap screw is suited for use in machine frames, fixtures, guards, and light structural assemblies where a rounded, low-profile head is preferred over a standard hex or flat head. The black oxide coating provides mild corrosion resistance and reduces light reflection in exposed installations. It is commonly installed in manufacturing, maintenance, and repair environments where UNF fine-thread engagement and alloy steel strength are specified.

Key Features

• 5/16-24 UNF fully threaded, right-hand thread direction
• Low-profile button head style for flush or near-flush installations
• 3/16 inch hex socket drive for standard hex key installation
• Alloy steel construction with 36-43 HRC hardness range
• Black oxide finish for mild corrosion resistance and reduced reflectivity
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style or aftermarket replacement button socket cap screw for assemblies specifying a 5/16-24 UNF fully threaded alloy steel fastener with a button head profile per ANSI/ASME B18.3 and ASTM F835.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 3/16 inch hex key or T-handle driver. Ensure mating threads are clean and free of debris before driving. Do not exceed the rated thread fit class 3A tolerance by overtightening, which can strip threads or damage the head socket. Verify thread engagement depth meets engineering specifications for the assembly before final torque.