Greenlee 4-1/2" Standard Round...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$846.73
$796.73
Greenlee 742BB K O PNCH 4IN (742BB)

Greenlee 4-1/2" Standard Round Knockout Punch Set with Draw Stud Assembly

(No reviews yet) Write a Review

Model: 742BB
Selected Model is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$846.73
$796.73
Adding to cart… The item has been added
Free Shipping on orders over $99
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Greenlee 4-1/2" Standard Round Knockout Punch Set with Draw Stud Assembly

Professional Knockout Punching for Clean, Accurate Holes

The Greenlee 4-1/2" Standard Round Knockout Punch Set delivers professional-grade hole punching capability for electrical installations and metalworking applications. This complete punch unit includes punch, die, and draw stud components for reliable performance through mild steel up to 10 GA thickness. Designed for use with battery-powered, hydraulic, ratchet, or manual drivers, this knockout punch set provides the versatility and precision required for professional electrical work.

Professional Features & Benefits

  • 10 GA Mild Steel Capacity: Handles substantial material thickness for demanding electrical and construction applications
  • Complete Unit Design: Includes punch, die, and draw stud for immediate use without additional components needed
  • Catalog Number Marking: Punches and dies are clearly marked with sizes for quick identification and inventory management
  • Alignment Markings: Improve punching accuracy and productivity when making precise holes in electrical panels and enclosures
  • Multi-Driver Compatibility: Works with battery-powered, hydraulic, ratchet, or manual drivers for flexible operation
  • Clean Hole Production: Properly assembled through pilot holes to create fast, accurate, and clean knockout holes

Technical Specifications

  • Capacity Mild Steel: 10 GA (3.500 MM)
  • Includes: Punch, Die And Draw Stud
  • Product Size: 4-1/2 IN (115.400 MM)
  • Product Type: Standard Round Knockout
  • Product Weight: 11.400 LB (5172.000 G)
  • Replacement Part: 2984AV UPC 04655 Punch, 2983AV UPC 04654 Die, 3026AV UPC Draw 04679 Stud and 3036AVBB UPC04685 Ball

Installation & Operation

  1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
  2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
  3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
  4. Configure any available load management or control features as supported by the provided specifications.
  5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
  6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

  • Electrical Panel Modifications
  • Conduit and Cable Entry Points
  • Industrial Equipment Installation
  • Commercial Electrical Work
  • Maintenance and Repair Operations
  • Metal Fabrication Projects

Why Choose Greenlee Quality?

Greenlee knockout punch sets are built for professional reliability with durable construction and precision engineering. The complete unit design with marked components ensures consistent performance and easy identification, while the robust 11.4 lb construction provides the stability needed for accurate hole punching in demanding applications.

Manufacturer Resources

Product Specs

Capacity Mild Steel:
10 GA (3.500 MM)
Includes:
Punch, Die And Draw Stud
Product Size:
4-1/2 IN (115.400 MM)
Product Type:
Standard Round Knockout
Product Weight:
11.400 LB (5172.000 G)
Replacement Part:
2984AV UPC 04655 Punch, 2983AV UPC 04654 Die, 3026AV UPC Draw 04679 Stud and 3036AVBB UPC04685 Ball

Greenlee 742BB – Frequently Asked Questions

How fast can I get the Greenlee 742BB delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Greenlee 742BB come with a warranty?
Absolutely. The Greenlee 742BB is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Greenlee 742BB?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Greenlee 742BB from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!