Value Collection 701213PR Button Socket Cap Screw

Product Description

The VALUE COLLECTION 701213PR is a fully threaded button socket cap screw designed for applications requiring a low-profile head with high clamping strength. Manufactured from alloy steel with a black oxide finish, this fastener meets ANSI/ASME B18.3 and ASTM F835 standards. It features a 1/2-20 UNF thread, a 5/16-inch hex socket drive, and a 1-1/2-inch length under the head. The hardness rating of 36-43 HRC makes it suitable for demanding mechanical assemblies. Licensed machinists, millwrights, and mechanical contractors are the typical installers for this class of fastener.

This button socket cap screw is suited for general-purpose and precision mechanical assemblies where a flush or recessed fastener profile is required. The low-dome button head reduces protrusion in tight clearance applications. Its right-hand, Class 3A thread fit ensures consistent engagement with standard UNF tapped holes. Typical applications include machine frames, guards, fixtures, and equipment enclosures in both light industrial and commercial settings.

Key Features

• Button head profile provides low clearance and a finished appearance
• 1/2-20 UNF fully threaded shank with right-hand, Class 3A thread fit
• 5/16-inch hex socket drive for use with standard Allen or hex keys
• Alloy steel construction rated 36-43 HRC for high-strength service
• Black oxide finish offers mild corrosion resistance and reduced light reflection
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in standard UNF 1/2-20 tapped holes as an OEM-style or replacement fastener in mechanical assemblies requiring a button head socket cap screw per ANSI/ASME B18.3.

Installation Notes

Installation is typically performed by machinists, millwrights, or mechanical technicians using a calibrated hex key or socket wrench. De-energize and lock out all equipment before fastener replacement or installation in live assemblies. Do not exceed the rated hardness or torque range for the thread size and material class. Verify thread engagement depth in the mating tapped hole before fully seating the fastener.