Value Collection 581167PR Hex Socket Cap Screw 5-40 Unc

Product Description

The VALUE COLLECTION 581167PR is a hex socket cap screw designed for secure, high-strength fastening in tight-clearance applications. It features a 5-40 UNC thread form, a 5/16 inch length under head, and a 3/32 inch hex drive socket. Constructed from alloy steel with a black oxide finish, it provides corrosion resistance and reduces surface galling during installation. This screw is fully threaded along its length, ensuring maximum thread engagement in shallow bosses or thin material applications. It is commonly installed by machinists, maintenance technicians, and assembly professionals working with precision hardware.

This fastener is suited for light-duty mechanical assemblies requiring a small-diameter, fine-thread cap screw. Typical applications include instrument panels, electronics enclosures, small machine components, and fixture assemblies where hex socket drive access is limited or a low-profile head is required. The black oxide coating makes it appropriate for applications where a dark, matte finish is specified. This screw meets ASME/ANSI B18.3 and ASTM A574 standards, confirming dimensional and mechanical property compliance for engineered assemblies.

Key Features

• 5-40 UNC thread for fine-pitch engagement in small-diameter tapped holes
• Fully threaded shank maximizes thread engagement over the full 5/16 inch under-head length
• 3/32 inch hex socket drive for use with standard hex keys or Allen drivers
• Alloy steel construction delivers high tensile strength relative to screw size
• Black oxide finish provides mild corrosion resistance and low-reflectance appearance
• Meets ASME/ANSI B18.3 and ASTM A574 dimensional and mechanical standards

Compatibility

Designed as a standard replacement or stock fastener for assemblies specifying a 5-40 UNC hex socket cap screw with a 5/16 inch under-head length and alloy steel construction per ASME/ANSI B18.3.

Installation Notes

Install using a 3/32 inch hex key or Allen driver; ensure the drive tool is fully seated before applying torque to avoid rounding the socket. Verify the mating tapped hole meets 5-40 UNC thread specification before installation. Black oxide finish offers minimal corrosion protection in exposed environments; apply thread lubricant or sealant as required by the assembly specification. Minimum order quantity of 100 units applies per purchase.