Greenlee 745H-1/2 Round Knockout Punch Unit 0.885 in

Product Description

The GREENLEE 745H-1/2 is a round knockout punch unit designed for creating clean, precise holes in electrical enclosures, panel boxes, and conduit bodies. Compatible with battery-operated and hydraulic knockout drivers, this unit punches a 0.885-inch diameter hole and handles mild steel up to 10 gauge and stainless steel up to 10 gauge. Each unit ships complete with a die, draw stud, and punch, giving the installer everything needed to complete the knockout in a single package. Licensed electricians and electrical contractors use this punch for conduit entry work in both new construction and retrofit installations.

This knockout punch unit is suited for residential and commercial electrical applications where consistent hole diameter and clean edges are required. It is driven by battery-operated hydraulic tools or dedicated hydraulic knockout sets, making it a practical choice for panel work, wireway installations, and enclosure fabrication. The 0.885-inch hole diameter is a standard size used for 1/2-inch trade-size conduit fittings. The included die, draw stud, and punch mean no additional accessories are required for basic operation.

Key Features

• 0.885-inch round punch hole diameter for 1/2-inch trade-size conduit entries
• Compatible with battery-operated and hydraulic knockout drivers
• Maximum material capacity of 10 gauge mild steel and 10 gauge stainless steel
• Steel punch material for durability under repeated use
• Includes die, draw stud, and punch — complete unit ready for use
• Lightweight at 0.7 pounds for easy handling on the job

Compatibility

Designed as an OEM-style replacement and standard knockout punch unit for use with battery-operated and hydraulic knockout driver systems that accept this punch diameter and draw stud size.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. Power down and de-energize any panel or enclosure before punching. Secure the workpiece firmly before operating the hydraulic or battery driver to prevent movement during the punch cycle. Inspect the punch, die, and draw stud for wear or damage before each use and replace worn components to maintain hole quality and operator safety.