Value Collection MS16997-68 Hex Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION MS16997-68 is a hex socket cap screw designed for precision fastening in mechanical assemblies and structural applications. It features a 1/4-20 UNC thread with a 2-1/2-inch length under the head and is partially threaded, allowing for controlled clamping force without thread engagement through the full grip length. The 3/16-inch hex drive socket accepts a standard Allen or hex key. Manufactured from 4037 alloy steel with a yellow cadmium-plated finish, the fastener offers corrosion resistance and meets ASME B18.3 dimensional standards. It is installed by machinists, maintenance technicians, and assemblers across industrial, aerospace, and general mechanical environments.

This cap screw is suited for applications requiring a recessed-drive, high-strength fastener in tight spaces where a wrench or external hex is impractical. The partial threading makes it appropriate for through-hole assemblies where the unthreaded shank carries shear loads. The yellow cadmium coating adds mild corrosion protection and provides visual identification for specification compliance. Typical use cases include machine frames, fixtures, tooling plates, and general industrial equipment requiring a repeatable, torque-controlled joint.

Key Features

• 1/4-20 UNC thread size for wide compatibility with standard tapped holes
• 2-1/2 inches length under head, partially threaded for shear-load applications
• 3/16-inch hex socket drive for access in confined spaces
• 4037 alloy steel construction for high tensile strength
• Yellow cadmium-plated finish for corrosion resistance and spec identification
• Meets ASME B18.3 dimensional standard

Compatibility

Designed as an OEM-style replacement or standard-specification fastener for any assembly calling out a 1/4-20 UNC hex socket cap screw per ASME B18.3 with a 2-1/2-inch length under head.

Installation Notes

Installation is performed with a 3/16-inch hex key or Allen driver; use a calibrated torque wrench when a torque specification is called out in the assembly drawing. Cadmium-plated fasteners should be handled with appropriate personal protective equipment, as cadmium is a regulated substance under occupational safety guidelines. Ensure the mating tapped hole is clean and free of debris before installation. Do not mix thread classes or substitute a different drive size, as this can damage the socket recess.