Value Collection R40664422 Hex Socket Cap Screw 4-40 Unc

Product Description

The VALUE COLLECTION R40664422 is a hex socket cap screw designed for precision fastening in mechanical assemblies, fixtures, and fabricated components. The screw features a 4-40 UNC thread size with a 5/16 inch length under head, driven by a 3/32 inch hex key. The body is machined from 18-8 stainless steel, providing corrosion resistance in moderate-exposure environments. This type of fastener is commonly installed by machinists, millwrights, and assembly technicians in applications where a low-profile, high-strength cap screw with a recessed hex drive is required.

This screw is well suited for light-duty mechanical assemblies, instrument enclosures, electrical panel components, and small-gauge fabrication work where 4-40 UNC threading is specified. The 18-8 stainless steel construction makes it appropriate for environments with incidental moisture exposure. Its compact 5/16 inch under-head length fits shallow clearance applications where longer fasteners would not seat properly. Sold individually, with a minimum order quantity of 100 pieces.

Key Features

• 4-40 UNC thread size for light-duty precision fastening
• 3/32 inch hex drive for use with standard Allen keys or hex drivers
• 5/16 inch length under head for shallow clearance installations
• 18-8 stainless steel construction for corrosion resistance
• Low-profile socket cap head reduces protrusion in tight assemblies

Compatibility

Designed as a standard 4-40 UNC hex socket cap screw suitable for use in any application specifying 4-40 UNC threaded fasteners with a 5/16 inch under-head length and 3/32 inch hex drive.

Installation Notes

Installation requires a 3/32 inch hex key or Allen driver. Ensure the mating threaded hole is clean and free of debris before driving to avoid cross-threading. Torque to the specification called out in the assembly drawing for the application. Follow applicable mechanical codes and manufacturer fastener specifications for the assembly being serviced.