Gibraltar 41404G Blind T-slot Nut 3/8-16 Steel Black Oxide

Product Description

The GIBRALTAR 41404G is a blind tapped T-slot nut designed for securing workpieces, fixtures, and tooling to T-slotted machine tables, extrusions, and structural framing. Machined from 1018 steel with a black oxide finish, this nut accepts a 3/8-16 right-hand thread and drops into a 0.4375-inch-wide T-slot. The blind tap design encloses the threaded bore on one end, preventing chips and debris from passing through and maintaining thread integrity in shop environments. Licensed machinists, tool-and-die professionals, and industrial maintenance technicians install this hardware as part of fixturing and workholding setups.

This T-slot nut is suited for use on milling machine tables, drill press tables, welding fixtures, modular fixturing plates, and aluminum extrusion systems with a 12.00 mm slot size. The inch-system dimensions make it a straightforward fit for standard domestic machine tools and fabrication tables. It is sold individually, making it practical for single-position repairs or low-quantity fixture builds.

Key Features

• Blind tapped bore keeps threads clean and prevents chip pass-through
• 3/8-16 right-hand thread for compatibility with standard inch-series fasteners
• Fits 0.4375-inch slot width and 12.00 mm T-slot tables
• 1018 steel construction for strength in fixturing applications
• Black oxide finish provides mild corrosion resistance in shop environments
• Compact base profile: 11/16 inches wide by 7/32 inches tall

Compatibility

Designed for T-slotted tables and fixturing systems with a slot width of 0.4375 inches (7/16 inches) or a 12.00 mm metric slot equivalent, using 3/8-16 inch-series clamping hardware.

Installation Notes

T-slot nuts are installed by a machinist or industrial maintenance technician by sliding the nut into the open end of the T-slot channel before positioning the workpiece or clamp. Ensure the machine table is clean and free of chips before seating the nut to avoid binding. Always verify thread engagement depth is sufficient for the clamping stud or bolt being used before applying clamping force. De-energize and lock out any powered equipment before performing workholding changes on machine tools.