Value Collection R40664424 Hex Socket Cap Screw 4-40 Unc

Product Description

The VALUE COLLECTION R40664424 is a hex socket cap screw designed for precision fastening in light-gauge assemblies and instrument-level applications. Threaded to 4-40 UNC specifications, it measures 1/4 inch in length under the head and accepts a 3/32 inch hex drive. Constructed from 18-8 stainless steel, this screw resists corrosion in wet, chemical, or outdoor environments. The socket cap head profile allows installation in tight clearances where a standard hex bolt head would not fit. Electricians, HVAC technicians, and equipment fabricators commonly use this fastener in control panels, enclosures, and light mechanical assemblies requiring a clean, flush-fitting screw.

This screw is suited for applications where fine-thread engagement and a low-profile cap head are required. Common install scenarios include securing terminal blocks, din-rail hardware, panel components, and instrumentation mounting brackets. The 4-40 UNC thread is a standard fine thread used widely in electronics and light mechanical assemblies. The 18-8 stainless steel grade makes it appropriate for both indoor and outdoor environments where mild corrosion resistance is needed.

Key Features

• 4-40 UNC thread provides reliable engagement in fine-thread tapped holes
• 3/32 inch hex drive compatible with standard hex keys and Allen wrenches
• 1/4 inch length under head suits shallow-clearance fastening applications
• 18-8 stainless steel construction resists corrosion without plating
• Socket cap head profile allows installation in confined spaces

Compatibility

Designed as a standard 4-40 UNC hex socket cap screw for use in any tapped hole or threaded insert meeting the 4-40 UNC thread standard in light mechanical, electrical, or instrumentation assemblies.

Installation Notes

Install using a 3/32 inch hex key or Allen driver. Verify the mating tapped hole meets 4-40 UNC thread specifications before installation. Do not overtighten, as the small thread diameter is susceptible to stripping in soft materials such as aluminum or plastic. Power down any electrical enclosure or panel before servicing fasteners on live equipment.