Gibraltar 842791-G Steel T-slot Bolt 3/4-10 Black

Product Description

The GIBRALTAR 842791-G is a Grade 5 steel T-slot bolt designed for use in T-slot tracks and fixture systems common in machine tables, jigs, and workholding setups. It features a 3/4-10 UNC thread, a 4-inch thread length, and a 3/4-inch slot width, making it suited for heavy-duty clamping applications. The black finish provides a basic level of corrosion resistance for shop-floor use. The head measures 1-1/4 inches wide and 15/32 inches tall, with 10 inches of length under the head. Machinists, toolmakers, and fixture builders typically install this fastener in production and fabrication environments.

This T-slot bolt is used in machine tool tables, milling fixtures, modular workholding plates, and any system with standard 3/4-inch T-slots. The Grade 5 material rating supports significant clamping loads, making it appropriate for both light fixturing and more demanding production clamping setups. It follows inch-based UNC thread standards, which aligns with the majority of domestic machine table hardware.

Key Features

• 3/4-10 UNC thread standard for compatibility with standard inch-system hardware
• 4-inch thread length provides ample engagement for nuts and clamping components
• 3/4-inch slot width fits standard T-slot machine table tracks
• Grade 5 steel construction for reliable clamping strength
• Black finish for basic corrosion and abrasion resistance in shop environments
• 10-inch length under head accommodates thicker workpieces and fixture plates

Compatibility

Designed as a direct-fit replacement or standard addition for T-slot systems with a 3/4-inch slot width using inch-based UNC fastener hardware.

Installation Notes

T-slot bolts are installed by machinists and toolmakers using standard hand tools and torque wrenches appropriate for Grade 5 fasteners. Ensure the T-slot track is free of debris before insertion to prevent galling or binding. Do not overtighten — refer to published Grade 5 torque specifications for 3/4-10 hardware when precise clamping loads are required. Always verify slot width compatibility before installation.