Value Collection 015161PR Hex Socket Cap Screw 1/4-20 Unc

Product Description

The VALUE COLLECTION 015161PR is a hex socket cap screw designed for use in mechanical assemblies requiring a clean, low-profile fastener with high tensile strength. Built from alloy steel with a black oxide finish, this screw resists mild corrosion and reduces light reflection in finished assemblies. It features a 1/4-20 UNC thread size, a 2-inch length under head, and a 3/16-inch hex drive. The partial threading allows for clamping force across unthreaded shank sections. This fastener meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it a reliable choice for precision mechanical and industrial applications.

This screw is suited for use in machinery, fixtures, tooling, and structural assemblies across industrial, manufacturing, and maintenance environments. The 1/4-20 UNC thread is one of the most common coarse-thread sizes in North American tooling and equipment, making this screw a frequent replacement or stock item for machine shops, maintenance technicians, and millwrights. The black oxide finish blends into dark-finished assemblies and provides a degree of surface protection in dry to mildly humid conditions.

Key Features

• 1/4-20 UNC coarse thread for broad compatibility with standard tapped holes
• 2-inch length under head with partial threading for improved clamping performance
• 3/16-inch hex socket drive accepts standard Allen or hex key tooling
• Alloy steel construction provides high tensile and shear strength
• Black oxide coating reduces corrosion in low-moisture environments and minimizes glare
• Meets ASME/ANSI B18.3, ASTM A574, and IFI 124 fastener standards

Compatibility

Designed as an OEM-style replacement or stock fastener for any application using 1/4-20 UNC tapped holes requiring a hex socket cap screw with a 2-inch length under head.

Installation Notes

Installation is performed by maintenance technicians, machinists, or millwrights using a 3/16-inch hex key or Allen driver. Ensure the mating tapped hole is clean and free of debris before installation. De-energize or lock out any machinery per applicable OSHA lockout/tagout procedures before fastener removal or replacement. Do not exceed the rated drive engagement depth for the hex socket to avoid rounding the drive recess.