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Lokrite Safety Backup Nuts

- Hire & Sale

Hands-Free Backup Nut reduces Hand Injuries

Lokrite Saefty Backup Nut

Suitable for pneumatic, hydraulic, electric torque wrenches and air Nut Runner Applications needing a BackUp Nut

Lokrite Backup will promote safe bolting, will speed up a project.

Download LOKRITE Flyer

Zero Pinch points
with magnetic grip to hold in position.


1-1/4” to 6-1/8” (Imperial)



Open Ended Lokrite Backup Nut

The Opened-ended Lokrite Backup Nut ease fitting in tight spaces, where even access for a open-ended spanner is difficult.

The Lokrite open-end Backup Nut with locking bolt is a simple clever addition to your toolbox. It offers a tight radius nose, and a low height clearance for when a standard wrench wont fit and hold.

Like the standard Lokrite Backup Nut, it will hold in place by the embedded magnets in the tool, so they are always used "Hands Free".

For an area with height restrictions the locking cleat can be slid between the top of the stud or nut easily and under/beside any obstruction. Areas of restriction are inherent safety concerns even with a standard open-end wrench and the open-ended Lokrite Backup Nut address and overcome this issue.
Lokrite high torque

Lokrite Backup Wrench high torque

The Lokrite Backup Nut contains magnets embedded in one side, that HOLDS any steel surface making it a true "Hands Free" device and PINCH POINT FREE application.

Simple Quick Releaseallows easy removal with a half turn bolt
- see VIDEO below

Lokrite Backup Nuts are perfect for areas that require Non-Striking & Non-Sparking torque applications. Also hold rusted nuts for difficult breakout applications too!

No hammering to get them off your flange, with less paint damage to your flange and pipe.

Video player is Loading Lokrite Demonstration

Using a Backup Nut Demo
Demonstrating the full process of using a Lockrite Backup Nut
on a typical pipe Flange.

The powered Torque wrench used is a RAD 25GX.
Loading the player ..

Vertical Use of Backup Nut Demonstration
The internal magnets of the Lockrite Backup Nut hold the Unit in place, making a Hands Free, safe method for single person to complete a typical pipe Flange bolting application.

The powered Torque wrench used is a RAD 25GX.

Box End Lokrite
Box End -
Standard Type

Nut Size AF
Stud Size Torque Max
in Ft Lbs
LR -1-1/4 1-1/4"  3/4 2320
LR -1-7/16 1-7/16"  7/8 2486
LR -1-5/8 1-5/8" 1    3480
LR -1-13/16 1-13/16" 1 1/8 3500
LR - 2 2" 1 1/4 4030
LR -2-3/16 2-3/16" 1 3/8 4200
LR -2-3/8 2-3/8" 1 1/2 4250
LR -2-9/16 2-9/16" 1 5/8 4530
LR -2- 3/4 2-3/4" 1 3/4 5525
LR-2-15/16 3" 1 7/8 6240
LR -3-1/8 3-1/8" 2    7016
LR -3-1/2 3-1/2" 2 1/4 7150
LR -3-7/8 3-7/8" 2 1/2 8780
LR -4-1/4 4-1/4" 2 3/4 23,706
LR -4-5/8 4-5/8' 3    26,890
LR -5    5" 3 1/4 26,900
LR -5-3/8 5-3/8" 3 1/2 26,900
LR -5-3/4 5-3/4" 3 3/4 26,900
LR -6-1/8 6-1/8" 4    26,900

Lokrite lanyard

Lokrite Backup Wrench Lanyard with Stainless Steel Clip are available for Fall Protection.
Lanyards fits all sizes of Lokrite


Also Metric Sizes available upon request
Can be custom fabricated in any size.

The Open-Ended LOKRITE Nuts are available in the same sizes as the Chart on the left.

The difference between the two Types is the maximun Torque Capacity. The Open-Ended Type having around
2/3 the Torque Capacity of the Box Ened Type.

The Box Ended Types Torque Capacity exceeds that of the respective stud size each unit fits.



With Magnetic Hold
Truly a Hands Free - Pinch Point Free alternative to any other Wrench or Spanner!


Impact Set 3/4" std
10pc 3/4" Sq Drive Impact Socket Set
1" socket set impact for torque wrench
1" Custom Impact Socket Set
Hex driver set for Nut runners
Hex Driver Socket sets


Correct Square Drive Impact sockets play a critical role in running Maintenance Shutdowns.    See our Hex Driver Socket sets and 1" Custom Socket Sets.
When the right size Impact Sockets is holding up the schedule, avoid compromise - use High Torque Impact Sockets for all hydraulic torque tooling . The Deep Impact Series Socket offers addition length to pass over extended thread.
Sockets from 3/4" up to 6" AF ( AF= across flats).

High torque Impact Sockets for Pneumatic Nut Runners, Torque Multipliers and Hydraulic Torque Wrenches. Large size Impact sockets are our specialty. Due to the powerful high torque tools now available over 10,000 Ft Lbs in 1-1/2" and 2-1/2" Sq Drives we have big impact sockets in most sizes.

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