Gibraltar 40107G Adjustable Steel Step Block 2 Piece

Product Description

The GIBRALTAR 40107G is a 2-piece adjustable steel step block designed to provide stable, incremental height support during machining, clamping, and workholding operations. The block adjusts from 3.5 inches to 9 inches in height, giving technicians and machinists a wide range of support positions without swapping components. Built from steel for durability under load, this step block is a standard accessory in machine shops and on precision workholding setups. Its stepped profile allows for accurate vertical positioning at consistent intervals, making it a reliable tool for setups that demand repeatable support geometry.

This step block is suited for use in machine shop environments, tool and die operations, and general metalworking setups where adjustable workpiece support is required. The 2-piece construction allows the upper and lower sections to slide relative to each other, enabling quick height changes during fixturing. Typical installations involve pairing this block with a matching step clamp and T-bolt in a milling machine table or drill press setup. The 1.5-inch width and 5.328-inch base depth provide a stable footprint across a range of workpiece sizes.

Key Features

• Adjustable height range from 3.5 inches to 9 inches for versatile workholding setups
• 2-piece steel construction provides durability and stability under clamping load
• 1/16-inch step depth and 1/8-inch step elevation for precise incremental positioning
• 1.5-inch width and 5.328-inch base depth offer a stable support footprint
• 3.4375-inch nominal height in base configuration before adjustment
• Compatible with standard step clamp and T-bolt workholding systems

Compatibility

Designed as a standard-profile replacement or addition for steel step block workholding sets used with conventional milling machine T-slots and step clamp assemblies.

Installation Notes

Step blocks are installed by machinists and toolroom technicians as part of a clamp, step block, and T-bolt assembly on milling or drill press tables. Always confirm the machine table is powered down and the spindle is stopped before repositioning workholding components. Ensure the step block and clamp surfaces are clean and free of chips before clamping to maintain even load distribution. Refer to the machine tool manufacturer guidelines for maximum clamping torque and T-slot load ratings.