Value Collection 201101P Button Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION 201101P is a 1/4-20 button socket cap screw designed for applications requiring a low-profile head with high clamping strength. Machined from alloy steel with a black oxide finish, this fully threaded fastener measures 7/8 inch in length under the head and is driven with a 5/32-inch hex socket key. It meets ANSI/ASME B18.3 and ASTM F835 standards and carries a hardness rating of 36-43 HRC, making it suitable for demanding mechanical assemblies. The unified national coarse (UNC) thread form with a 3A fit class ensures consistent engagement and reliable holding power across standard threaded components.

This button socket cap screw is used in general mechanical, industrial, and light structural assemblies where a flush or near-flush fastener head is required. The low-profile domed button head reduces snagging and interference in tight clearance areas. It is commonly installed by machinists, millwrights, maintenance technicians, and equipment assemblers working on machine frames, panels, guards, and fixtures. The black oxide finish provides moderate corrosion resistance and reduces light reflection in exposed assemblies.

Key Features

• Fully threaded 1/4-20 UNC alloy steel construction rated 36-43 HRC
• Low-profile button head reduces interference in tight clearance applications
• 5/32-inch hex socket drive for precise torque application
• Black oxide finish for moderate corrosion resistance and low reflectivity
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards
• Right-hand thread with 3A fit class for consistent thread engagement

Compatibility

Designed as a standard 1/4-20 UNC button socket cap screw compatible with any threaded component or tapped hole conforming to ANSI/ASME B18.3 dimensional requirements and a 3A/3B thread fit class.

Installation Notes

Install using a calibrated 5/32-inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before threading. Power down or de-energize any equipment before fastener replacement on live assemblies. Avoid over-driving, which can strip the low-profile button head socket or damage the thread fit.