Value Collection 581691BR Hex Socket Cap Screw 1-12 Unf

Product Description

The VALUE COLLECTION 581691BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural connections. It features a 1-12 UNF thread with a 5-inch length under the head and a 3/4-inch hex drive socket. Constructed from alloy steel with a black oxide coating, this screw provides solid mechanical strength and moderate corrosion resistance in controlled environments. Partially threaded along the shank, it is well-suited for applications that require a defined grip length and precise clamping force. Machinists, millwrights, and maintenance technicians are the typical installers.

This cap screw is used in both light industrial and heavy-duty mechanical assemblies where a recessed hex drive is preferred over external hex fasteners. The 1-12 UNF thread pitch is a coarse-to-fine unified thread suited for applications requiring higher thread engagement strength. The partial thread shank provides a smooth bearing surface that helps align and stabilize joined components. Common applications include machine frames, fixtures, tooling plates, and equipment enclosures where controlled torque and reliable joint integrity are required.

Key Features

• 1-12 UNF thread size for high thread-engagement strength
• 5-inch length under head for deep-reach fastening applications
• 3/4-inch hex socket drive compatible with standard hex keys and drivers
• Partially threaded shank provides a smooth grip length for component alignment
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide finish offers mild corrosion resistance and reduced surface glare

Compatibility

Designed as an OEM-style replacement or standard fastener for mechanical assemblies requiring a 1-12 UNF hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 3/4-inch hex key or socket driver. Always ensure mating threads are clean and free of debris before installation. Follow applicable torque specifications from your engineering drawings or fastener standards documentation, as no torque value is specified for this part. Power down and de-energize any associated equipment before accessing fastener locations on live machinery.