Gibraltar 41434G Blind Tapped T-slot Nut 5/16-18

Product Description

The GIBRALTAR 41434G is a blind tapped T-slot nut designed for use in standard T-slot fixtures, machine tables, and workholding setups. It accepts a 5/16-18 right-hand thread and seats into a 0.5-inch slot width. The base measures 7/8 inch wide by 9/32 inch tall. The nut is machined from 1018 steel and finished in black oxide for basic corrosion resistance. Installation does not require access from the end of the slot, making it practical for mid-slot positioning. This hardware is typically installed by machinists, toolmakers, and fixture builders working in production or maintenance environments.

This T-slot nut fits machine table slots sized for 13.00 mm (0.5-inch) slot widths, common on milling machines, drill press tables, and modular fixturing systems. The blind tapped design keeps the thread enclosed on one end, which prevents chip intrusion and allows the nut to be placed anywhere along a T-slot without sliding it in from the edge. It is sold in single-piece quantity and is suited for both original equipment builds and replacement applications in inch-measurement fixturing setups.

Key Features

• Blind tapped thread prevents chip and debris intrusion into the thread bore
• 5/16-18 right-hand thread for compatibility with standard inch-series fasteners
• Fits 0.5-inch (13.00 mm) T-slot width
• 1018 steel construction with black oxide finish for moderate corrosion resistance
• Mid-slot placement capability — no end access required
• Overall length 7/8 inch, overall height 1/2 inch

Compatibility

Designed as a direct-fit replacement or original-build component for machine tables and modular fixtures with a 0.5-inch (13.00 mm) T-slot, using inch-series 5/16-18 threaded fasteners.

Installation Notes

Installation is performed by machinists or fixture technicians. De-energize and lock out any machine before working on the table or fixture. The nut drops into the T-slot from above and is rotated 90 degrees to seat; no end-of-slot access is needed. Verify thread engagement is adequate for the clamp load required by the application before applying torque to the mating bolt.