Electro Hardware THS1002M07F16 4-40 Thumb Screw Knurled

Product Description

The ELECTRO HARDWARE THS1002M07F16 is a 303 stainless steel thumb screw with a knurled head and integral shoulder, designed for hand-tightening applications where tools are not practical or accessible. The 4-40 UNC thread and 5/8-inch overall length suit compact assemblies in instrumentation panels, enclosures, and light mechanical fixtures. The knurled head provides secure finger grip and measures 3/8 inch in diameter with a 3/16-inch head height. The uncoated 303 stainless steel body delivers corrosion resistance in moderate service environments. A brass head and 1/8-inch shoulder add dimensional control during installation. This fastener is installed by electricians, instrumentation technicians, and mechanical assemblers working on panel or enclosure builds.

This thumb screw is suited for light-duty, hand-tightened fastening in control panels, junction boxes, equipment enclosures, and laboratory or instrumentation assemblies. The with-shoulder design positions the fastener accurately against a mating surface, making it a practical choice for repetitive access covers or removable subassemblies. The 4-40 UNC thread accommodates standard tapped holes in sheet metal and machined components within that thread family.

Key Features

• 303 stainless steel construction with uncoated finish for corrosion resistance in moderate environments
• Knurled head for positive finger grip without tools
• With-shoulder design for accurate seating and controlled clamp depth
• 4-40 UNC thread standard for compatibility with common tapped holes in that size range
• Brass head material paired with stainless steel body
• Compact 5/8-inch overall length suitable for tight panel assemblies

Compatibility

Designed for use in standard 4-40 UNC tapped holes in sheet metal panels, machined enclosures, and instrumentation assemblies requiring hand-removable fasteners.

Installation Notes

Installation is hand-tightened by design; do not use power tools or torque wrenches, as over-torquing will damage the knurled head or strip the 4-40 thread. Verify that the mating tapped hole is clean and properly formed to 4-40 UNC before installation. De-energize any electrical enclosure before accessing internal fasteners, per applicable NEC guidelines. Inspect the shoulder fit against the mating surface to confirm proper seating before closing the assembly.