Gibraltar 41457G Quarter Turn T-slot Nut 3/4-10 Blind

Product Description

The GIBRALTAR 41457G is a blind-tapped, quarter-turn T-slot nut designed for use with standard T-slot fixtures, tooling tables, and workholding systems. Machined from C-1018 steel with a black oxide finish, this nut seats into a 1-inch T-slot and locks in place with a 90-degree turn, eliminating the need to thread the fastener from the end of the slot. The 3/4-10 right-hand thread accepts standard 3/4-10 bolts and studs commonly used in fixture and jig setups. The base measures 1 inch wide by 0.615 inches tall, and the overall length is 1.75 inches with a 1-inch overall height. Machinists, toolmakers, and fixture builders install this hardware in production and maintenance environments.

This T-slot nut is suited for use on machine tool tables, welding fixtures, and modular workholding systems that use 1-inch T-slots, equivalent to a 26 mm slot size. The quarter-turn design speeds up part setup and changeover by allowing the nut to drop into any open section of the slot and lock in position without sliding from the slot end. The blind tap keeps the top face clean and prevents debris from entering unused thread depth. It is appropriate for both light and moderate clamping loads on steel fixture tables in industrial and shop environments.

Key Features

• Quarter-turn locking design allows drop-in placement anywhere along the T-slot without sliding from the end
• Blind-tapped 3/4-10 right-hand thread keeps the top face flush and debris-free
• C-1018 steel construction provides solid strength for fixture and workholding applications
• Black oxide finish offers mild corrosion resistance in shop environments
• Fits 1-inch (26 mm) T-slots found on standard machine tool and fixture tables
• Base dimensions of 1 inch wide by 0.615 inches tall seat securely within the slot channel

Compatibility

Designed for use in 1-inch wide T-slots (26 mm equivalent) on machine tool tables, fixture plates, and modular workholding systems that accept 3/4-10 threaded clamping hardware.

Installation Notes

Installation is performed by machinists or toolmakers as part of fixture setup or workholding changeover. De-energize and lock out any associated machinery before working on or near the table surface. Drop the nut into the T-slot at an open section, then rotate 90 degrees to engage the locking position before threading in the mating bolt or stud. Do not overtighten the mating fastener beyond the capacity of the C-1018 base material or the slot channel.