Value Collection R63008882 Flat Socket Cap Screw 4-40

Product Description

The VALUE COLLECTION R63008882 is a flat socket cap screw engineered for applications requiring a flush or countersunk fastener profile. Sized at 4-40 UNC thread by 3/4 inches overall length, this screw is manufactured from 18-8 stainless steel for reliable corrosion resistance in a wide range of environments. Drive engagement is through a 1/16-inch hex socket, and the head geometry is an 82-degree flat countersunk style. Machinists, maintenance technicians, and assembly professionals use this fastener where a low-profile head is required and stainless-steel durability is specified.

This screw is suited for light-gauge metal, plastic, and composite assemblies where a flush finish is needed. The 4-40 UNC thread is a common fine-pitch size used in instrument panels, electronics enclosures, HVAC controls, and precision mechanical assemblies. The 18-8 stainless steel construction makes it appropriate for indoor and moderate outdoor environments where mild corrosion resistance is required. Minimum order quantity is 100 pieces; each package contains 1 unit.

Key Features

• 18-8 stainless steel construction provides corrosion resistance without surface coating
• 82-degree flat countersunk head sits flush with or below the mating surface
• 1/16-inch hex socket drive for precise torque application in tight spaces
• 4-40 UNC thread standard ensures broad tooling and hardware compatibility
• 3/4-inch overall length suits medium-depth countersunk installations

Compatibility

Designed as a standard inch-series flat socket cap screw for use in any application specifying a 4-40 UNC, 82-degree countersunk, hex-socket fastener in 18-8 stainless steel.

Installation Notes

Install using a properly sized 1/16-inch hex key or Allen driver to avoid rounding the socket. Countersink the mating hole to 82 degrees to achieve full head seating and a flush finish. Apply only hand or calibrated torque tools when fastening into plastic or thin-gauge materials to prevent stripping. Always verify thread engagement depth is sufficient for the load requirements of the assembly.