Value Collection R40664122 Hex Socket Cap Screw 4-40

Product Description

The VALUE COLLECTION R40664122 is a hex socket cap screw designed for secure fastening in applications requiring precise thread engagement and corrosion resistance. Threaded to the 4-40 UNC standard, this screw measures 1.25 inches in length under the head and accepts a 3/32 inch hex drive. Manufactured from 18-8 stainless steel, it resists rust and oxidation in humid or wet environments. Its compact size and fine thread pitch make it well suited for instrument panels, electrical enclosures, and light mechanical assemblies. Installation requires a standard 3/32 inch hex key or Allen driver.

This screw is used across a wide range of light-duty fastening applications in HVAC controls, electrical panels, plumbing fixtures, and mechanical equipment assemblies. The 4-40 UNC thread is a common choice for small component mounting where a secure, removable connection is needed. It is appropriate for both field service and shop assembly work where stainless steel is specified for corrosion performance or code compliance.

Key Features

• 4-40 UNC thread for precise engagement in fine-thread tapped holes
• 1.25 inch length under head for moderate material stack depth
• 3/32 inch hex socket drive for use with standard Allen keys
• 18-8 stainless steel construction for corrosion resistance
• Socket cap head style provides a low-profile, high-strength clamping surface

Compatibility

Designed as a standard replacement or stock fastener for any application requiring a 4-40 UNC hex socket cap screw with a 1.25 inch length under head in 18-8 stainless steel.

Installation Notes

Install using a 3/32 inch hex key or Allen driver. Ensure the mating hole is tapped to 4-40 UNC specification before driving the screw. Follow applicable mechanical codes and torque to the assembly manufacturer guidelines for the material being fastened. Avoid cross-threading by starting the screw by hand before applying tool pressure.