Value Collection R40664444 Hex Socket Cap Screw 4-40 Unc

Product Description

The VALUE COLLECTION R40664444 is a hex socket cap screw designed for secure fastening in tight-clearance applications where a standard hex head wrench cannot reach. Threaded to a 4-40 UNC specification with a 3/8-inch length under head, this screw accepts a 3/32-inch hex drive. The body is machined from 18-8 stainless steel, providing corrosion resistance suitable for use in humid or mildly corrosive environments. It is installed by maintenance technicians, electricians, HVAC service pros, and mechanical assemblers who work with small-frame equipment, control panels, and precision hardware.

This fastener is commonly used in light-gauge sheet metal assemblies, electrical enclosures, control boards, small mechanical brackets, and instrumentation panels. The fine 4-40 UNC thread pitch provides strong clamping force in thin-material applications. The recessed hex socket drive reduces cam-out risk compared to Phillips or slotted drive types, making it a reliable choice in repetitive production or service work where torque consistency matters.

Key Features

• 4-40 UNC thread size for fine-pitch fastening in small-frame assemblies
• 3/8-inch length under head suits thin-material stacking applications
• 3/32-inch hex socket drive minimizes cam-out and improves torque control
• 18-8 stainless steel construction resists corrosion in humid environments
• Low-profile socket cap head fits recessed counterbore installations

Compatibility

Designed as a standard 4-40 UNC hex socket cap screw for use in any application requiring this thread size and drive type. Suitable for use wherever an 18-8 stainless steel socket cap screw with a 3/8-inch length under head is specified.

Installation Notes

Install using a calibrated 3/32-inch hex key or T-handle driver. De-energize any electrical equipment fully before accessing internal fasteners on panels or control enclosures. Apply thread-locking compound only if specified by the equipment manufacturer, as over-application on fine threads can cause galling with stainless fasteners. Follow applicable mechanical and electrical codes for the equipment type being serviced.