Value Collection -40884-1 Button Socket Cap Screw 3/8-16

Product Description

The VALUE COLLECTION -40884-1 is a 3/8-16 button socket cap screw designed for secure, low-profile fastening in mechanical assemblies and structural applications. Manufactured from alloy steel with a black oxide finish, it delivers high tensile strength and moderate corrosion resistance in a compact head profile. The hex socket drive accepts a 7/32-inch hex key for precise torque application in confined spaces where a standard hex head wrench cannot reach. With a hardness rating of 36-43 HRC and a thread fit class of 3A, this fastener meets tight tolerance requirements for demanding industrial and equipment assembly work.

This screw is suited for use in machine assembly, tooling fixtures, enclosures, and general fabrication where a button head profile is required to keep fastener heads flush or below the work surface. The fully threaded 1-1/4-inch shank under the head provides maximum thread engagement throughout the full length of the grip. It is commonly installed by machinists, millwrights, and maintenance technicians in both light and heavy manufacturing environments. The UNC thread form is the standard for inch-series fastener applications across North American industry.

Key Features

• Button head profile keeps fasteners low-profile in assemblies where clearance is limited
• Alloy steel construction provides high hardness of 36-43 HRC for demanding load applications
• 7/32-inch hex socket drive for use with standard Allen or hex key tooling
• Black oxide finish offers mild corrosion resistance and reduced light reflection
• Fully threaded shank maximizes thread engagement along the entire 1-1/4-inch length under head
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard fastener for inch-series UNC threaded applications requiring a 3/8-16 button socket cap screw in alloy steel.

Installation Notes

Installation is performed with a 7/32-inch hex key or Allen driver. Power down and de-energize any equipment before accessing fastened assemblies on live machinery. Ensure mating threads are clean and free of debris before installation. Follow applicable ANSI/ASME torque guidelines for 3/8-16 alloy steel fasteners when specified torque values are required by the assembly documentation.