Value Collection 011503BR Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION 011503BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, structural connections, and industrial equipment. It features a 7/8-9 UNC thread form and measures 3 inches in length under the head with full threading along the entire shank. The screw is machined from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection in precision assemblies. Drive engagement is via a 3/4-inch hex socket. Installation requires a torque wrench or hex key set with a matching 3/4-inch drive bit. This fastener is suited for use by millwrights, machinists, maintenance technicians, and general industrial trades.

This screw is used in applications where a clean, recessed drive head is required and bolt access is limited to a socket or Allen-type tool. Full threading along the 3-inch shank length allows engagement across varying material thicknesses and is well suited for through-bolting or threading into deeper tapped holes. Black oxide alloy steel construction makes it appropriate for dry or lightly oiled interior mechanical environments. It is commonly used in machine frames, jigs and fixtures, pump housings, and general industrial maintenance work.

Key Features

• 7/8-9 UNC thread form for standard inch-series tapped holes
• Fully threaded 3-inch shank length provides maximum thread engagement flexibility
• 3/4-inch hex socket drive allows high torque application with standard tooling
• Alloy steel construction delivers high tensile and shear strength
• Black oxide finish offers mild corrosion resistance and a low-reflectance appearance
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard replacement or new-installation hex socket cap screw for any application requiring a 7/8-9 UNC thread and a 3-inch length under head. Fits standard 7/8-9 UNC tapped holes per ASME/ANSI B18.3 specification.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using a calibrated torque wrench and a correctly sized 3/4-inch hex drive bit. Verify thread condition in the mating tapped hole before installation and apply appropriate thread lubricant or anti-seize compound as required by the application. Do not use impact drivers at full speed for final seating, as this may damage threads or exceed alloy steel fastener specifications.