Value Collection 581915BR Hex Socket Cap Screw 1-1/4-12 Unf

Product Description

The VALUE COLLECTION 581915BR is a fully threaded hex socket cap screw engineered for high-strength fastening applications. Manufactured from alloy steel with a black oxide finish, this cap screw meets the dimensional and mechanical requirements of ASME/ANSI B18.3 and ASTM A574. The 1-1/4-12 UNF thread profile provides fine-pitch engagement suited to applications where vibration resistance and precise clamping load are critical. With a 3.5-inch length under head and a 7/8-inch hex socket drive, this fastener is sized for heavy-duty assemblies requiring reliable torque transfer. Machinists, millwrights, and industrial maintenance technicians are the typical installers of this fastener class.

This cap screw is appropriate for use in mechanical assemblies, industrial equipment, and structural fixturing where alloy steel strength and a fine UNF thread are specified. The black oxide coating provides mild corrosion resistance and reduces light reflection on installed components. It is suited to both original equipment assembly and field maintenance work in manufacturing, heavy equipment, and industrial plant environments.

Key Features

• 1-1/4-12 UNF fine-pitch thread for precise clamping and vibration resistance
• Fully threaded along the shank for maximum thread engagement
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide coating for mild corrosion resistance and surface protection
• 7/8-inch hex socket drive for high-torque installation with standard tooling
• Complies with ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for any application specifying a 1-1/4-12 UNF fully threaded alloy steel fastener conforming to ASTM A574.

Installation Notes

Installation should be performed by qualified machinists or maintenance technicians familiar with high-strength fastener procedures. Use a calibrated torque wrench with a 7/8-inch hex socket driver and follow the torque specifications required by the equipment manufacturer or applicable engineering standard. Ensure mating threaded holes are clean and free of debris before installation. Do not use impact drivers without verifying that torque output is controlled and within the fastener grade requirements.