Value Collection 3TSSF04C004 Flat Socket Cap Screw 4-40

Product Description

The VALUE COLLECTION 3TSSF04C004 is a flat socket cap screw designed for applications where a flush or countersunk fastener profile is required. Sized at 4-40 x 1/4 inches overall length with a UNC thread standard, this screw features an 82-degree flat head and a 1/16-inch hex socket drive. The body is machined from 316 stainless steel, offering strong corrosion resistance in wet, marine, or chemically exposed environments. It is commonly installed by maintenance technicians, machinists, and mechanical contractors working on equipment assemblies, enclosures, and precision hardware.

This screw is suited for light-duty fastening tasks where a low-profile head is necessary to sit flush with or below the mating surface. Typical applications include panel assemblies, instrument enclosures, HVAC controls, and equipment frames exposed to moisture or mild chemical contact. The 316 stainless steel construction makes it a preferred choice over standard 18-8 stainless in more demanding corrosion environments such as coastal installations or chemical processing areas.

Key Features

• 82-degree flat head sits flush or countersunk in mating material
• 1/16-inch hex socket drive for precise torque application with standard hex keys
• 316 stainless steel construction for superior corrosion resistance
• UNC thread standard, 4-40 thread size for compatibility with standard tapped holes
• 1/4-inch overall length suits thin panel and enclosure fastening tasks

Compatibility

Designed as an OEM-style replacement or standard-service fastener for any application requiring a 4-40 UNC flat socket cap screw with an 82-degree head angle and 1/16-inch hex socket drive.

Installation Notes

Installation requires a 1/16-inch hex key or hex bit driver. Ensure the mating hole is properly countersunk to 82 degrees before installation to achieve a flush seating surface. De-energize any electrical assembly before fastener replacement in live equipment. Apply appropriate anti-seize compound if installing into dissimilar metals to prevent galvanic corrosion.