Value Collection 015183PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 015183PR is a hex socket cap screw designed for applications requiring a compact, high-strength fastener with a recessed drive. Manufactured from alloy steel with a black oxide finish, this screw offers corrosion resistance and reduced light reflection in service environments. It features a 1/4-28 UNF thread — a fine-pitch unified thread that provides superior holding strength in tapped metal applications. The 3/16-inch hex drive accepts a standard hex key or Allen driver. It is fully threaded along its 1-1/4-inch length under head, making it suitable for through-hole and short-engagement applications alike. Machinists, millwrights, maintenance technicians, and mechanical assemblers commonly install this fastener type.

This screw is suited for precision mechanical assemblies, machine tool components, jigs, fixtures, and general industrial fastening where a low-profile socket head is required. The fine 1/4-28 UNF thread pitch is commonly used in applications involving thin materials, close-tolerance fits, or assemblies subject to vibration where a finer thread engagement helps resist loosening. The black oxide coating is appropriate for indoor or low-moisture environments and provides a finished appearance without adding significant dimensional material to the thread form.

Key Features

• 1/4-28 UNF fine-pitch thread for high-torque holding in metal assemblies
• Fully threaded along the 1-1/4-inch length under head
• 3/16-inch hex socket drive accepts standard hex keys
• Alloy steel construction for high tensile strength
• Black oxide finish for mild corrosion resistance and low-glare appearance
• Meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards

Compatibility

Designed as a standard socket head cap screw per ASME/ANSI B18.3 for use in any application requiring a 1/4-28 UNF fully threaded alloy steel fastener with a 3/16-inch hex drive.

Installation Notes

Installation requires a 3/16-inch hex key or Allen driver. Ensure the receiving thread is clean and properly tapped to 1/4-28 UNF specification before installation. Follow ASME torque guidelines appropriate for alloy steel cap screws at this thread size. Black oxide coatings do not substitute for plating or wet-environment coatings — apply supplemental corrosion protection if the assembly will see moisture exposure.