Value Collection -40861-1 Button Socket Cap Screw 8-32

Product Description

The VALUE COLLECTION -40861-1 is a fully threaded button socket cap screw designed for mechanical assemblies where a low-profile head and strong clamping force are required. Sized at 8-32 UNC with a 7/16-inch length under the head, this fastener is driven by a 3/32-inch hex socket key. The alloy steel construction delivers a hardness rating of 36-43 HRC, making it suitable for demanding fastening applications. A black oxide finish provides moderate corrosion resistance and reduces light reflection in finished assemblies. This screw meets ANSI/ASME B18.3 and ASTM F835 fastener standards.

This button socket cap screw is used in a wide range of light industrial, mechanical, and equipment assembly applications. The button head profile sits low against mating surfaces, making it a practical choice where clearance is limited or a flush appearance is preferred. It is commonly installed by machinists, maintenance technicians, and assembly personnel working on machinery, fixtures, enclosures, and fabricated components requiring UNC-threaded fasteners with internal hex drive access.

Key Features

• 8-32 UNC thread with a right-hand thread direction and Class 3A thread fit for consistent, precise engagement
• 3/32-inch hex socket drive for installation with a standard hex key or socket driver
• Button head style provides a low-profile seating surface suitable for clearance-restricted applications
• Alloy steel construction with 36-43 HRC hardness for reliable clamping performance
• Black oxide finish for moderate corrosion resistance and reduced surface glare
• Meets ANSI/ASME B18.3 and ASTM F835 standards

Compatibility

Designed as an OEM-style replacement or standard-use fastener compatible with any 8-32 UNC threaded application requiring a button head socket cap screw with a 7/16-inch length under head.

Installation Notes

Install using a 3/32-inch hex key or matching socket driver. Ensure the mating threaded hole is clean and free of debris before driving the fastener. Do not exceed the torque capacity appropriate for the 8-32 thread size and alloy steel grade. Power down or de-energize any equipment before performing fastener installation or removal on live assemblies.