Value Collection 581013BR Hex Socket Cap Screw 1-1/8-12 Unf

Product Description

The VALUE COLLECTION 581013BR is a hex socket cap screw engineered for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 1-1/8-12 UNF thread size with a 5-inch length under the head and is partially threaded along its shank. The screw is driven by a 7/8-inch hex socket. Constructed from alloy steel and finished with a black oxide coating, it provides solid corrosion resistance and surface hardness suitable for demanding service environments. Licensed trades and maintenance professionals use this fastener where fine-thread engagement and high clamp loads are required.

This fastener is suited for medium-to-heavy mechanical assemblies where fine unified thread engagement is specified. Partially threaded shanks provide improved shear resistance in bolted joint applications. The black oxide finish is commonly specified in industrial and OEM environments where mild corrosion protection and low light reflectance are needed. Installation is performed by machinists, millwrights, maintenance technicians, and mechanical contractors working to ASME/ANSI B18.3 and ASTM A574 standards.

Key Features

• 1-1/8-12 UNF fine thread for tight-tolerance, high-load fastening
• 5-inch length under head with partial threading for improved shear strength
• 7/8-inch hex socket drive for use with standard socket tooling
• Alloy steel construction rated to ASTM A574 for high tensile strength
• Black oxide coating provides mild corrosion resistance and a low-reflectance finish
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for use in any application requiring a 1-1/8-12 UNF partially threaded fastener with a 7/8-inch hex drive.

Installation Notes

Installation should be performed by qualified mechanical tradespeople using calibrated torque tooling appropriate for the joint specification. Always verify mating thread condition and hole depth before installation. Follow applicable ASME or ASTM joint design guidelines for proper preload. Do not use impact drivers without torque control when precise clamp load is required.