Klein Tools Conduit Locknut Wr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$125.17
$52.20
Klein Tools 56999 Conduit Locknut Wrench, Fits 1/2-Inch, 3/4-Inch

Klein Tools Conduit Locknut Wrench 1/2-Inch & 3/4-Inch Steel Construction with Twist Rotating Head

(No reviews yet) Write a Review

Model: 56999
Selected Model is

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

$125.17
$52.20
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

Klein Tools Conduit Locknut Wrench 1/2-Inch & 3/4-Inch Steel Construction with Twist Rotating Head

Professional locknut installation and removal tool for electrical contractors

The Klein Tools Conduit Locknut Wrench delivers reliable performance for electrical professionals working with 1/2-inch and 3/4-inch connectors. Built with heavy duty steel construction, this specialized wrench features a unique twist rotating head design that enables stationary twisting motion for efficient locknut installation and removal. Perfect for remodel work where electrical boxes are filled with existing wires, this tool provides the leverage and torque needed for secure connections in tight spaces.

Professional Features & Benefits

  • Dual Size Compatibility: Fits both 1/2-inch and 3/4-inch connectors for versatile electrical work applications
  • Heavy Duty Steel Construction: Provides the durability and strength needed to generate proper torque for secure connections
  • Twist Rotating Head Design: Enables stationary twisting motion that works efficiently in confined spaces and deep cut-in boxes
  • Screwdriver Leverage Hole: Built-in leverage point in head provides extra torque when needed for stubborn connections
  • Direct-Drive Head System: Rotating heads work together when twisted for smooth operation and reliable performance
  • Compact 9-Inch Length: Optimal size for maneuverability while providing sufficient leverage for professional applications
  • Remodel Work Optimized: Specifically designed for working in boxes filled with existing wires where space is limited

Technical Specifications

  • Department: Electrical
  • Depth: 9.0000 in
  • Height: 1.0000 in
  • Material: Steel
  • Overall Length: 9" (22.9 cm)
  • Product Details: Twist Rotating Head
  • Product Group: Hand Tools
  • Product Size: 1/2", 3/4"
  • Product Subgroup: Hammers & Wrenches
  • Product Type: Twist Rotating Head
  • Weight: 0.7000 lbs
  • Width: 1.0000 in

Professional Applications

  • Electrical contractor installations and service work
  • Remodel projects with existing wiring in electrical boxes
  • Commercial electrical system maintenance and upgrades
  • Residential electrical panel and junction box work
  • Industrial facility electrical connections and repairs
  • Emergency electrical service and troubleshooting

Why Choose Klein Tools Quality?

Klein Tools delivers professional-grade electrical tools built with heavy duty steel construction for long-lasting performance. The precision engineering and durable materials ensure reliable operation in demanding electrical work environments, making this conduit locknut wrench a trusted choice for electrical professionals who require dependable tools for critical connections.

Manufacturer Resources

Product Specs

Overall Length:
9" (22.9 cm)
Department:
Electrical
Product Group:
Hand Tools
Product Subgroup:
Hammers & Wrenches
Product Type:
Twist Rotating Head
Product Size:
1/2", 3/4"
Product Details:
Twist Rotating Head
Product Height:
1.0000 in
Product Material:
Steel
Product Weight:
0.7000 lbs
Product Width:
1.0000 in
Product Depth:
9.0000 in

Klein Tools 56999 – Frequently Asked Questions

1) What size conduit locknuts does the Klein 56999 wrench fit?
The Klein Tools 56999 conduit locknut wrench works on 1/2-inch and 3/4-inch connectors. Those two sizes cover the bulk of branch circuit work in device boxes and junction boxes. For larger trade sizes you'd need a different tool.
2) Can you tighten a locknut inside a box that's already packed with wires?
That's the situation this tool is built for. The 56999 has a twist rotating head, so you set it on the locknut and twist the handle in place rather than swinging a wrench arc through the box. At 9 inches long with a 1-inch profile, it reaches into deep cut-in boxes and remodel work without you having to pull existing conductors out of the way.
3) How do you get more torque on a seized locknut with the Klein 56999?
There's a leverage hole in the head. Drop a screwdriver shaft through it and you get a cross handle for extra torque on a stubborn or corroded locknut. The body is steel, so it takes the load.
4) Is this the same thing as a channel-lock or a standard locknut punch?
No. A conduit locknut wrench like the Klein 56999 seats on the locknut lugs and drives them with a stationary twisting motion from a rotating head, where pliers need swing room and a punch and hammer need a clear strike path. In an open box on a bench, pliers or a punch will do. Inside a filled remodel box, the rotating head is what lets you work without room to swing.
5) Does the head work for both installing and backing off locknuts?
Both directions. The rotating heads on the 56999 are direct drive, meaning they turn together when you twist the tool, so you can run a locknut down tight on new work or break one loose on a service call with the same motion.
6) Will the Klein 56999 locknut wrench fit in a tool pouch?
It's a 9-inch tool, about 1 inch wide and 1 inch tall, and weighs 0.7 lbs. That drops into a standard electrician's pouch or the long pocket of a bag alongside screwdrivers without taking up real estate.
7) What part number should I put on a purchase order for the Klein conduit locknut wrench?
Order Klein Tools 56999. That's the manufacturer part number for the 1/2-inch and 3/4-inch conduit locknut wrench, and it ships as a single tool rather than a set.
How fast can I get the Klein Tools 56999 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 Klein Tools 56999 come with a warranty?
Absolutely. The Klein Tools 56999 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 Klein Tools 56999?
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 Klein Tools 56999 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.
!