Gibraltar 842640-G Steel T-slot Bolt 5/8-11 Black

Product Description

The GIBRALTAR 842640-G is a Grade 5 steel T-slot bolt designed for securing workpieces and fixtures in T-slotted tables, machine beds, and jigs. The bolt features a 5/8-11 UNC thread with a 2.5-inch thread length and fits a 0.625-inch wide T-slot. The low-profile head measures 1.125 inches wide and 0.344 inches tall, allowing it to seat cleanly inside standard T-slot channels without obstruction. A black finish provides a degree of corrosion resistance for shop environments. The 4-inch length under head accommodates moderate workpiece stack heights. This fastener is installed by machinists, toolmakers, and fixture builders working on milling machines, drill presses, and similar machine tool tables.

This T-slot bolt is suited for use on machine tool tables, welding fixtures, and modular workholding systems that use standard 5/8-inch T-slot profiles. It is appropriate for both manual and CNC machining setups where repeatable clamping and secure part location are required. The UNC thread pattern is compatible with standard 5/8-11 nuts, step blocks, and strap clamps commonly used in production and job-shop environments.

Key Features

• 5/8-11 UNC thread for use with standard clamp nuts and strap clamp hardware
• 2.5-inch thread length provides adequate engagement for typical workholding setups
• Fits 0.625-inch wide T-slot channels on standard machine tool tables
• Grade 5 steel construction for reliable clamping strength under load
• Low-profile head at 1.125 inches wide and 0.344 inches tall seats flush in T-slot tracks
• Black finish for basic corrosion resistance in shop environments

Compatibility

Designed for use in standard 5/8-inch T-slot machine table channels and compatible with 5/8-11 UNC strap clamp kits, step blocks, and T-slot nuts used in general workholding applications.

Installation Notes

Installation is performed by machinists or toolmakers using standard hand tools. Ensure the machine table and workholding setup are fully de-energized and the machine is locked out before positioning or adjusting clamps. Slide the T-slot bolt head into the channel from the end of the slot or through a cross-slot access point, then thread on the appropriate nut and clamp hardware. Do not exceed the load rating of the clamping setup, and verify all hardware is fully tightened before initiating any machining operation.