Gibraltar 20201G 50 Piece Step Block Clamp Set

Product Description

The GIBRALTAR 20201G is a 50-piece fixturing step block and clamp set designed for workholding applications on milling machines, drill presses, and other machine tool setups. The set includes step blocks, clamps, studs, nuts, and washers sized to fit 3/8-inch T-slots with 5/16-18 stud thread. Step blocks are 1 inch wide, and studs are available in six lengths: 3, 4, 5, 6, 7, and 8 inches. Nut width is 5/8 inch. At 18 pounds, this is a shop-grade set suited for production fixturing and general machining work performed by machinists and tool and die professionals.

This set is used in machine shop environments where workpieces must be clamped securely to machine tables equipped with standard T-slot tracks. The variety of stud lengths accommodates a wide range of workpiece thicknesses and step block configurations, making it practical for both production runs and one-off setups. It is appropriate for use on bridgeport-style knee mills, surface grinders with T-slot tables, and similar equipment that uses 3/8-inch T-slots.

Key Features

• 50-piece set includes step blocks, clamps, studs, nuts, and hardware for complete T-slot fixturing
• 1-inch step block width provides a stable clamping surface across a range of setups
• Six stud lengths (3, 4, 5, 6, 7, and 8 inches) for versatile workpiece height accommodation
• 3/8-inch T-slot fit with 5/16-18 stud thread matches common machine table standards
• 5/8-inch nut width for consistent wrench engagement across all studs in the set
• 18-pound set weight reflects a full complement of shop-grade steel components

Compatibility

Designed for use with machine tables equipped with 3/8-inch T-slots. Fits standard 5/16-18 threaded stud fixturing systems common to milling machines, drill presses, and surface grinders with T-slot tables.

Installation Notes

Installation is performed by machinists or toolroom personnel. Before clamping, ensure the machine table and T-slots are clean and free of chips or debris that could affect seating. Select the appropriate stud length so the clamp bears on the workpiece rather than the step block, and verify that all fasteners are tightened securely before beginning any cutting operation. Follow your shop safety procedures and machine manufacturer guidelines for workholding.