Gibraltar TN-20SS-G T-slot Nut Blind Tapped 1/2-13

Product Description

The GIBRALTAR TN-20SS-G is a blind tapped T-slot nut machined from 304 stainless steel with a black oxide finish. It is designed to slide into standard T-slot tracks on machine tables, fixtures, and workholding systems, providing a secure threaded anchor point for fasteners and clamping hardware. The nut features a right-hand 1/2-13 thread and a 9/16-inch slot width, making it compatible with common inch-based T-slot profiles. Machinists, toolmakers, and fixture builders install this component when assembling precision workholding setups on milling machines, drill presses, and fabrication tables.

This T-slot nut is suited for industrial and shop environments where corrosion resistance and dimensional accuracy are required. The blind tap design encloses the threaded hole on one end, preventing coolant, chips, and debris from passing through — an advantage in wet-machining applications. The 304 stainless steel construction handles exposure to cutting fluids and light chemical environments without degrading. It is a direct drop-in component for inch-system T-slot tables requiring a 9/16-inch slot width and a 1/2-13 threaded insert.

Key Features

• Blind tapped 1/2-13 right-hand thread prevents chip and coolant intrusion through the fastener bore
• 304 stainless steel construction resists corrosion from cutting fluids and shop environments
• Black oxide finish reduces surface glare and provides mild additional corrosion resistance
• 9/16-inch slot width fits standard inch-system T-slot tracks
• Base dimensions of 7/8 inch wide by 11/32 inch tall seat firmly in the T-slot channel
• Overall length of 1-1/4 inches provides adequate thread engagement for clamping loads

Compatibility

Designed for use in inch-system T-slot tracks with a 9/16-inch slot width, typical of standard machine table and fixture plate T-slot profiles requiring a 1/2-13 threaded nut.

Installation Notes

Installation requires no special tools beyond the mating fastener or stud. Slide the nut into the T-slot channel before aligning and threading in the clamping bolt or stud. Ensure the table or fixture is de-energized and secured before performing any workholding setup changes. Do not overtighten the mating fastener beyond the load rating of the slot and nut assembly.