Greenlee 304AVBBP Ball Bearing...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$120.64
$49.96
Greenlee 304AVBBP Ball Bearing Drive Nut, 3/4" Replacement Draw Stud

Greenlee 304AVBBP Ball Bearing Drive Nut, 3/4" Replacement Draw Stud

(No reviews yet) Write a Review

Model: 304AVBBP
Selected Model is

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

$120.64
$49.96
Adding to cart… The item has been added
Free Shipping on orders over $199
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 304AVBBP Ball Bearing Drive Nut, 3/4" Replacement Draw Stud

The Greenlee 304AVBBP Ball Bearing Drive Nut is a 3/4" replacement manual draw stud engineered for use with screw unit drive applications on Greenlee knockout punch systems. Designed as a direct replacement component, this drive nut restores smooth, reliable operation to screw-driven knockout punch tooling used by electricians and contractors for cutting round openings in enclosures, panels, and boxes. The round-profile drive nut incorporates a ball bearing design that reduces friction during the driving cycle, allowing for consistent torque transfer and easier turning when advancing the draw stud through the material being punched. As a genuine Greenlee replacement part, the 304AVBBP is manufactured to fit and function within the Greenlee screw unit drive system, helping keep existing knockout punch equipment in productive service without the need to replace an entire drive assembly. Manufactured in the United States, this 3/4" drive nut is purpose-built to match the specifications of compatible Greenlee screw unit drive tooling, making it a straightforward maintenance solution for shops and field crews that rely on knockout punches daily.

Key Features

  • Trade Size: 3/4" drive nut sized for compatible Greenlee screw unit drive knockout punch tooling.
  • Ball Bearing Design: Reduces friction during the drive cycle for smoother, easier operation when advancing the draw stud.
  • Replacement Part: Functions as a replacement manual draw stud, restoring operation to existing screw unit drive setups.
  • Round Profile: Round product shape matches the drive nut's intended fit within the screw unit drive assembly.
  • Application-Specific: Purpose-built for screw unit drive applications on compatible knockout punch equipment.
  • Country of Origin: Manufactured in the United States.

Technical Specifications

  • Country Of Origin: United States
  • Product Shape: Round
  • Product Size: 3/4 IN

Typical Applications

  • Screw Unit Drive Knockout Punch Operations
  • Electrical Panel and Enclosure Fabrication
  • Replacement Component for Existing Greenlee Punch Drives
  • Commercial and Industrial Electrical Installation Work
  • Maintenance and Repair of Knockout Punch Tooling

Why Greenlee?

Greenlee is a trusted name in professional electrical tooling, and the 304AVBBP ball bearing drive nut reflects that commitment by offering electricians and contractors a genuine replacement part that keeps screw unit drive knockout punch equipment running dependably. The ball bearing design and precise 3/4" fit help ensure the drive nut performs as intended within the original equipment, supporting efficient, code-compliant electrical installation work without unnecessary downtime. Choosing genuine Greenlee replacement components like the 304AVBBP helps maintain the performance and reliability that professionals expect from their punch driving equipment on the job site, and keeping a spare on hand can minimize costly delays when a drive nut wears out mid-project.

Manufacturer Resources

Spec Sheet

Product Specs

Country Of Origin:
United States
Product Shape:
Round
Product Size:
3/4 IN
Product Type:
Draw Stud & Drive Nut
Department:
Electrical
Product Subgroup:
Tool Replacement Parts
Product Group:
Power Tools & Accessories

Greenlee 304AVBBP – Frequently Asked Questions

1) What exactly is the Greenlee 304AVBBP, and what part of a knockout punch set does it replace?
The 304AVBBP is a ball bearing drive nut, sold as a 3/4 inch replacement manual draw stud component for Greenlee screw unit drive knockout punch tooling. It is the piece you turn against when advancing the draw stud through the panel, and the ball bearing inside it cuts the friction so the wrench turns easier. It replaces the worn drive nut only, not the whole drive assembly.
2) Will the 304AVBBP drive nut work with my Greenlee knockout punch, or do I need to check the size first?
Size first. The 304AVBBP is a 3/4 inch drive nut, so it fits Greenlee screw unit drive punch tooling built around a 3/4 inch draw stud. If your set runs a different draw stud size, this one will not thread or seat correctly. It is also specific to screw unit (manual, wrench-driven) drives rather than hydraulic or battery punch drivers.
3) Is the 304AVBBP a genuine Greenlee part or an aftermarket copy?
It is a genuine Greenlee replacement component, made in the United States, built to fit and function inside the Greenlee screw unit drive system rather than being a generic substitute.
4) My knockout punch has gotten hard to turn. Will replacing the drive nut fix it?
Often, yes. A worn drive nut is a common cause of a punch that binds or turns rough, because the bearing surface is what carries the load as the stud draws the punch through steel. The 304AVBBP's ball bearing design is what keeps friction down and torque transfer consistent, so swapping in a fresh one restores smooth operation without replacing the entire drive assembly. If the draw stud itself is galled or stretched, that needs replacing too.
5) Does the Greenlee 304AVBBP come with a draw stud or punch and die?
No. The 304AVBBP is the ball bearing drive nut on its own, a round-profile component for the screw unit drive. Punches, dies, and the draw stud itself are separate items, so order those alongside it if your set needs them.
6) Should an electrical shop stock a spare 304AVBBP drive nut?
If your crews run manual screw unit knockout punches daily for panel and enclosure work, a spare is worth holding. The drive nut is the wear item in that assembly, and a seized one stops the punch mid-job. Keeping a 3/4 inch 304AVBBP on the shelf means a two-minute swap instead of sidelining the whole punch set.
How fast can I get the Greenlee 304AVBBP 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 304AVBBP come with a warranty?
Absolutely. The Greenlee 304AVBBP 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 304AVBBP?
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 304AVBBP 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.
!