Greenlee 28166 Knockout Die 2-3/8 Inches

Product Description

The GREENLEE 28166 is a 2-3/8-inch knockout die designed for punching clean, precise holes in electrical enclosures, panels, and sheet metal. It is used with compatible knockout punch sets to create conduit entry points in junction boxes, switchgear, and electrical panels. Weighing 1.15 pounds and packaged in a 3.75 x 3.75 x 3.75-inch form factor, this die is a field-ready tool for electricians working on conduit rough-in and panel termination tasks.

This knockout die is suited for commercial and residential electrical work where conduit entries must meet consistent dimensional standards. It is typically used during rough-in or panel assembly when conduit knockouts need to be field-punched to size. The 2-3/8-inch cut diameter accommodates standard conduit fittings at that trade size and is appropriate for use on steel, aluminum, and similar sheet metal enclosures of appropriate gauge.

Key Features

• 2-3/8-inch knockout diameter for standard conduit entry sizing
• Compact and field-portable at 1.15 pounds
• Uniform 3.75 x 3.75 x 3.75-inch package dimensions for easy storage and transport
• Designed for use with knockout punch driver systems
• Produces clean, burr-minimized holes in sheet metal enclosures

Compatibility

Designed as an OEM-style replacement or supplemental die for use with Greenlee knockout punch sets that accept 2-3/8-inch die components. Consult your punch set documentation to confirm die thread and driver compatibility before use.

Installation Notes

Knockout dies are installed by licensed electricians in accordance with NEC requirements for conduit entry and enclosure integrity. Always de-energize and lock out the panel or enclosure before punching knockouts in or near live equipment. Use the appropriate knockout punch driver and confirm the die and punch are properly threaded and seated before applying hydraulic or manual force. Inspect the die for cracks or wear before each use.

Technical Specifications

• Knockout Diameter: 2-3/8 inches
• Weight: 1.15 pounds
• Package Dimensions (L x W x H): 3.75 x 3.75 x 3.75 inches
• UPC: 78331028166

Standard Information

• Brand: GREENLEE
• Manufacturer Part Number: 28166