Value Collection 581890BR Hex Socket Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 581890BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and structural connections. Manufactured from alloy steel with a black oxide coating, this screw provides solid corrosion resistance and a clean finished appearance. The 1-1/4-7 UNC thread profile and 2-inch length under head make it suitable for heavy-load joints requiring a fine thread engagement. A 7/8-inch hex drive socket is required for installation. This fastener is commonly installed by machinists, millwrights, and maintenance technicians working on industrial or commercial equipment.

This cap screw is used in applications that demand a full-thread engagement over the fastener length, including machine frames, tooling fixtures, hydraulic component mounting, and structural steel assemblies. The fully threaded design maximizes thread engagement, which is critical in applications where the fastener must carry significant shear or tensile loads. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for applications with specific fastener grade requirements.

Key Features

• 1-1/4-7 UNC thread size for heavy-duty load-bearing applications
• 2-inch length under head with fully threaded shank for maximum thread engagement
• Alloy steel construction meets ASTM A574 high-strength socket head cap screw standard
• Black oxide finish provides moderate corrosion resistance and reduces light reflection
• 7/8-inch hex socket drive for use with standard hex key or socket tooling
• Compliant with ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard replacement or new-installation hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574, suitable for any application specifying a 1-1/4-7 UNC fully threaded socket head cap screw in alloy steel.

Installation Notes

Installation requires a 7/8-inch hex key or socket driver. Always verify that the mating tapped hole thread class and depth are compatible with a 1-1/4-7 UNC fastener before installation. Ensure all surfaces are clean and free of debris before seating the fastener. Follow applicable industry torque specifications for ASTM A574 alloy steel socket head cap screws based on your application requirements.