Value Collection 201107PR Button Socket Cap Screw 1/4-28

Product Description

The VALUE COLLECTION 201107PR is a button socket cap screw designed for applications requiring a low-profile fastener with high tensile strength. Manufactured from alloy steel with a black oxide finish, this screw features a 1/4-28 UNF thread and a 1/2-inch length under head. It is fully threaded and driven by a 5/32-inch hex socket. Hardness is rated at 36-43 HRC, making it suitable for demanding mechanical assemblies. It conforms to ANSI/ASME B18.3 and ASTM F835 standards. The button head profile reduces stress concentration and sits flush in countersunk or clearance applications. Machinists, maintenance technicians, and fabricators are the primary installers.

This fastener is used in general industrial, mechanical, and fabrication applications where a low-profile head is needed and where a standard hex socket drive is preferred. The 1/4-28 fine thread pitch provides strong clamping force in metal-to-metal assemblies. Black oxide finish offers mild corrosion resistance and a clean appearance suited to exposed mechanical components. Typical applications include machine guarding, fixture building, equipment frames, and enclosure assemblies.

Key Features

• Button head low-profile design reduces snag points in mechanical assemblies
• 1/4-28 UNF fully threaded, Class 3A thread fit for precise engagement
• Alloy steel construction with 36-43 HRC hardness rating
• Black oxide coating provides mild corrosion and wear resistance
• 5/32-inch hex socket drive for standard Allen key or bit installation
• Meets ANSI/ASME B18.3 and ASTM F835 dimensional and material standards

Compatibility

Designed as a standard-dimension replacement or general-use fastener for any application requiring a 1/4-28 UNF button socket cap screw per ANSI/ASME B18.3 and ASTM F835 specifications.

Installation Notes

Installation requires a 5/32-inch hex key or socket bit driver. Ensure mating threads are clean and free of debris before installation. Do not exceed the rated torque capacity of the alloy steel material for the 1/4-28 thread size as specified in applicable engineering references. Black oxide finish is not a heavy-duty corrosion barrier — apply supplemental coating or lubricant if the fastener will be exposed to moisture or chemicals.