Value Collection R40664448 Hex Socket Cap Screw 4-40 Unc

Product Description

The VALUE COLLECTION R40664448 is a hex socket cap screw intended for precision fastening applications requiring a compact, low-profile drive head. Sized at 4-40 UNC thread with a 3/32 inch hex drive and 1/8 inch length under head, this screw is manufactured from 18-8 stainless steel, providing corrosion resistance suitable for environments where moisture or mild chemicals are present. The socket drive design allows installation with a hex key or Allen wrench in tight clearance areas where a standard slotted or Phillips driver cannot reach. Electricians, HVAC technicians, plumbers, and general tradespeople use cap screws of this type when assembling or securing panels, brackets, and light-duty mechanical components.

This fastener is suited for light mechanical assemblies, instrumentation mounting, panel attachment, and precision equipment applications across residential and commercial trade work. The 4-40 UNC thread designation indicates a fine, controlled thread pitch appropriate for thin metal stock and tapped holes where thread engagement depth is limited. This screw ships individually but carries a minimum order quantity of 100 pieces, making it appropriate for bulk fastener stock or ongoing service kit replenishment.

Key Features

• 4-40 UNC thread size for fine-pitch fastening in metal and tapped assemblies
• 3/32 inch hex socket drive for use with a standard hex key or Allen wrench
• 1/8 inch length under head for shallow-depth fastening applications
• 18-8 stainless steel construction provides corrosion resistance
• Socket cap head profile allows installation in recessed or tight-clearance locations
• Minimum order quantity of 100 pieces supports bulk stocking

Compatibility

Designed as a standard 4-40 UNC hex socket cap screw suitable for tapped metal holes and threaded inserts conforming to the 4-40 UNC thread standard.

Installation Notes

Install using a correctly sized 3/32 inch hex key to avoid rounding the drive socket. Ensure the mating tapped hole or threaded insert matches the 4-40 UNC thread specification before installation. De-energize any electrical assembly and follow applicable NEC guidelines before fastening components on or near energized equipment. Do not overtighten in shallow tapped holes, as the short 1/8 inch length under head limits thread engagement depth.