Value Collection 581177PR Hex Socket Cap Screw 5-40 Unc

Product Description

The VALUE COLLECTION 581177PR is a hex socket cap screw designed for applications requiring a compact, high-strength threaded fastener. It features a 5-40 UNC thread size with a 1-1/2 inch length under head and is partially threaded along its shank. The drive type is hex, accepting a 3/32 inch hex key. Constructed from alloy steel with a black oxide finish coating, this screw delivers corrosion resistance and a clean finished appearance. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for precision mechanical and industrial assembly work.

This fastener is commonly used in machinery, tooling fixtures, electronic enclosures, and light fabrication assemblies where a flush or low-profile cap head and internal hex drive are required. The 5-40 UNC thread is a fine-pitch unified coarse thread standard frequently found in small-bore precision components. Installation is performed by machinists, maintenance technicians, and assembly professionals using a standard 3/32 inch hex key or T-handle driver.

Key Features

• 5-40 UNC thread size with 1-1/2 inch length under head
• Partially threaded shank for precise clamping and load distribution
• 3/32 inch hex drive for use with standard hex keys or drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish coating provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard-stock fastener for any application specifying a 5-40 UNC hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation is typically performed by machinists or mechanical assembly technicians using a 3/32 inch hex key or driver. Ensure mating threads are clean and free of debris before installation. Do not over-torque; consult applicable engineering specifications or fastener torque tables for 5-40 UNC alloy steel screws. Handle black oxide coated fasteners with care to preserve the finish during storage and assembly.