Value Collection 581967BR Hex Socket Cap Screw 1-1/2-12 Unf

Product Description

The VALUE COLLECTION 581967BR is a hex socket cap screw engineered for high-strength fastening applications requiring precise thread engagement. It features a 1-1/2-12 UNF thread size, a 5-inch length under head, and a 1-inch hex drive socket. Constructed from alloy steel with a black oxide coating, it delivers both mechanical strength and corrosion resistance in demanding service environments. Partial threading along the shank allows for controlled clamping load and is well suited to applications where thread engagement must be limited to a specific grip zone. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards.

This screw is intended for use in industrial, mechanical, and structural assemblies where a fine-thread, large-diameter socket cap screw is specified. Typical applications include heavy machinery, tooling fixtures, die sets, and precision mechanical assemblies. The fine 12 TPI pitch of the UNF thread provides superior resistance to vibration loosening compared to coarse-thread equivalents, making it a common choice in load-bearing joints subject to dynamic forces. Installation is performed with a 1-inch hex key or socket drive tool.

Key Features

• 1-1/2-12 UNF fine thread for superior vibration resistance and precise torque control
• 5-inch length under head accommodates deep grip zones in thick assemblies
• Partially threaded shank for controlled clamp load and accurate joint design
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish adds corrosion resistance and reduces light reflection in service environments
• Meets ASME/ANSI B18.3 and ASTM A574 standards for dimensional and mechanical compliance

Compatibility

Designed as a standard replacement or build fastener for any assembly specifying a 1-1/2-12 UNF partially threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation should be performed by qualified mechanical or industrial tradespeople using a calibrated 1-inch hex key or socket drive. Always verify mating thread condition and hole depth before installation. Torque to the value specified by the joint design engineer or applicable machine manufacturer documentation — do not use generic torque tables without confirming material and coating factors. Apply thread lubricant or anti-seize only if specified by the assembly procedure.