Value Collection 201099P Button Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION 201099P is a button socket cap screw designed for applications requiring a low-profile head and reliable clamping strength. Sized at 1/4-20 UNC x 3/4 inch, it is fully threaded and driven with a 5/32 inch hex socket key. The alloy steel construction is finished with black oxide coating, which provides mild corrosion resistance and reduces light reflection on finished assemblies. Hardness is rated at 36-43 HRC, meeting ANSI/ASME B18.3 and ASTM F835 standards. Machinists, millwrights, fabricators, and maintenance technicians install this fastener type across a broad range of industrial and mechanical assemblies.

This screw is suited for panel mounting, machine guarding, jigs, fixtures, and general mechanical assemblies where a rounded button head must sit flush or near-flush with the mating surface. The black oxide finish makes it a common choice in fabricated enclosures, brackets, and equipment where bare metal hardware is not acceptable. Right-hand thread direction and Class 3A thread fit ensure consistent engagement with standard UNC tapped holes. Sold as individual pieces with a minimum order quantity of 100.

Key Features

• Low-profile button head reduces snag risk in tight assemblies
• 5/32 inch hex socket drive for standard Allen key or hex bit use
• Fully threaded 1/4-20 UNC, Class 3A fit for consistent thread engagement
• Alloy steel construction rated 36-43 HRC for reliable clamping load
• Black oxide finish for mild corrosion resistance and low-glare appearance
• Meets ANSI/ASME B18.3 and ASTM F835 dimensional and mechanical standards

Compatibility

Designed as a standard replacement or stock fastener for any application requiring a 1/4-20 UNC fully threaded button socket cap screw conforming to ANSI/ASME B18.3 and ASTM F835.

Installation Notes

Installation is performed with a 5/32 inch hex key or hex socket bit. Verify the receiving hole is tapped to 1/4-20 UNC before installation. Do not exceed the torque capacity of the button head drive recess, as button heads carry lower drive torque limits than standard socket head cap screws of the same diameter. Wear appropriate PPE when working with hardened fasteners in pressurized or high-cycle assemblies.