Greenlee 7212SP21 Round Draw Stud Speed Punch

Product Description

The GREENLEE 7212SP21 is a round draw stud designed for use with Greenlee SPEED PUNCH System components. The draw stud is the threaded shaft that pulls the punch cutter through sheet metal or enclosure walls during knockout operations. It transfers pulling force from the hydraulic or manual driver to the punch die, making it a critical mechanical link in the knockout process. At 6.9 inches in length and weighing 0.765 pounds, it is sized for standard SPEED PUNCH tooling. Electricians and punch-out specialists rely on this replacement stud to restore a worn or damaged punch set to full working condition without replacing the entire tool assembly.

This draw stud is suited for electrical and low-voltage installation work where conduit knockouts are required in metal enclosures, panels, junction boxes, and strut channel assemblies. It is intended for use specifically within the Greenlee SPEED PUNCH System and is not a universal fit for other punch driver platforms. Typical applications include commercial and industrial electrical rough-in where multiple knockouts are driven in sequence using hydraulic punch tooling.

Key Features

• Round profile draw stud sized for Greenlee SPEED PUNCH System tooling
• 6.9 inches in length for reach through standard knockout punch assemblies
• Replacement component restores punch set function without full tool replacement
• Compact cross-section of 1.8 inches x 1.8 inches fits punch driver alignment
• Single-piece construction at 0.765 pounds for easy handling during changeouts

Compatibility

Designed for use with Greenlee SPEED PUNCH System components as specified by the manufacturer. Verify punch driver model and thread specification before installation to confirm fitment.

Installation Notes

Installation and replacement of draw studs is typically performed by licensed electricians familiar with hydraulic or mechanical knockout punch systems. Before replacing the draw stud, de-energize and lock out the hydraulic driver unit per site lockout/tagout procedures. Inspect the replacement stud threads for damage before threading into the punch body. Follow the tool manufacturer guidelines and applicable NEC requirements for knockout sizing and conduit fill when selecting punch dies used with this stud.