Gibraltar 20217G Step Block Clamp Set 50 Piece

Product Description

The GIBRALTAR 20217G is a 50-piece fixturing step block and clamp set designed for workholding applications on milling machines, drill presses, and similar machine tool tables. The set includes step blocks, clamps, studs, nuts, and washers sized for a 13/16 inch T-slot and a 3/4-10 stud thread. Step blocks measure 1-1/2 inches in width, and studs are available in six lengths: 3, 4, 5, 6, 7, and 8 inches. The nut width is 1-1/4 inches. Weighing 58 pounds, the set provides a comprehensive range of components to accommodate varying workpiece heights without requiring additional hardware.

This set is used in metalworking and machining environments where secure workholding is required during milling, drilling, or boring operations. The multi-length stud selection allows the technician to match clamp height to workpiece geometry across a wide variety of setups. It is appropriate for job shop, toolroom, and production floor use where repeatable, rigid clamping is critical to part accuracy.

Key Features

• 50-piece set provides studs, step blocks, clamps, nuts, and washers in a single kit
• Six stud lengths (3, 4, 5, 6, 7, and 8 inches) accommodate a wide range of workpiece heights
• 1-1/2 inch step block width for stable, broad clamping support
• 13/16 inch T-slot sizing fits standard machine tool table slots
• 3/4-10 stud thread for high clamping force with standard toolroom hardware
• 1-1/4 inch nut width compatible with common wrench sizes

Compatibility

Designed for use with machine tool tables fitted with 13/16 inch T-slots, including typical milling machine and drill press tables that accept 3/4-10 threaded studs.

Installation Notes

Installation is performed by machinists or toolroom technicians familiar with standard workholding practices. Ensure the machine is powered down and the spindle is at a safe position before setting up or adjusting clamps. Studs should be torqued evenly to secure the workpiece without distorting it, following general workholding best practices. Inspect step blocks, clamps, and studs for wear or damage before each use.