Value Collection 1-EFJ-10-17- Iron Thumb Screw 3/8-16

Product Description

The VALUE COLLECTION 1-EFJ-10-17- is a winged iron thumb screw designed for hand-tightened fastening applications where tools are not required or practical. Built to UNC thread standards with a 3/8-16 thread size, this thumb screw features a zinc-plated iron construction that provides basic corrosion resistance for general-purpose use. The winged head design gives operators a firm grip surface for manual tightening and loosening without tools. With an overall length of 1-5/8 inches and a length under head of 3/4 inches, this fastener suits light-duty clamping, panel retention, and access cover applications across industrial, mechanical, and maintenance environments.

This thumb screw is suited for use in light industrial assemblies, equipment panels, jigs, fixtures, and maintenance access points where frequent hand adjustment is required. The shoulder configuration and winged head make it a common choice in machine shop setups, HVAC equipment enclosures, and electrical panel applications where repeated removal and reinstallation is part of the service routine. It is sold individually and is appropriate for both original equipment assembly and field replacement use.

Key Features

• Winged head design allows tool-free hand tightening and loosening
• 3/8-16 UNC thread standard for broad compatibility with standard tapped holes
• Zinc-plated finish provides basic corrosion protection
• Iron construction rated to material grade 32510
• Shoulder type includes a shoulder for positive seating and alignment
• Compact overall length of 1-5/8 inches fits tight panel and enclosure clearances

Compatibility

Designed as a general-purpose UNC-threaded thumb screw for use in any application with a standard 3/8-16 tapped hole requiring hand-adjustable fastening.

Installation Notes

Installation requires no special tools due to the winged head design. Ensure the mating tapped hole is clean and free of debris before threading in. Do not use power tools or wrenches on the winged head, as this can crack or deform the iron casting. Always power down or de-energize equipment before accessing panels or enclosures secured by thumb screws.