Value Collection 581179PR Hex Socket Cap Screw 5-40 Unc

Product Description

The VALUE COLLECTION 581179PR is a hex socket cap screw designed for precision fastening applications requiring a compact, high-strength threaded connection. Sized at 5-40 UNC with a 2-inch length under head, this screw accepts a 3/32-inch hex drive and features partial threading along the shank. Constructed from alloy steel with a black oxide finish coating, it meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding mechanical and industrial assemblies where dimensional consistency and material strength are required.

This socket cap screw is used in light mechanical assemblies, precision instrumentation, electronics enclosures, and machine component fastening where a low-profile, high-torque drive is needed. The 5-40 UNC thread size fits fine-pitch tapped holes common in small-scale industrial and OEM applications. The partial threading allows the unthreaded shank to act as a shoulder in clearance-fit bores, providing controlled clamping and alignment.

Key Features

• 5-40 UNC thread size for fine-pitch tapped hole applications
• 2-inch length under head with partial threading for shoulder-style clamping
• 3/32-inch hex socket drive for precise torque application in tight spaces
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide coating provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard 5-40 UNC hex socket cap screw for use in tapped holes conforming to ASME/ANSI B18.3 specifications in light mechanical, instrumentation, and OEM assembly applications.

Installation Notes

Installation is typically performed by machinists, maintenance technicians, or assembly personnel using a 3/32-inch hex key or Allen driver. Ensure the receiving tapped hole is clean and free of debris before driving the screw. Do not overtighten, as the 5-40 thread size has a limited torque threshold. Follow applicable ASME or OEM torque guidelines for the specific assembly.