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Lokrite Safety Backup Wrench


Hands-Free magnetic safety Backup Wrench reduces Hand Injuries

Lokrite Saefty Backup Nut

Download LOKRITE Flyer

Zero Pinch points
magnetic grip will hold Lokrite upside down.


1-1/4” to 6-1/8” (Imperial)






Use for electric, pneumatic, hydraulic, torque wrenches and



Nut Runner bolting needing a BackUp Wrench

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 2-15/16" 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 with Lanyard and Stainless Steel Clip, available for Fall Protection.
Lanyards fits all sizes.


Metric Sizes available
Ccustom manufactured any size.

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

Difference betweenthe two Types: the maximun Torque Rating of the Open-Ended-Type is around
2/3 the Torque Rating of Box End Type.

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



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


Video Examples

Video player is Loading Lokrite Demonstration

Using a Lokrite Backup Nut Demo

Demonstration of using a Lockrite Backup Nut on a typical pipe Flange - easy hands free process

Air Nut Runner used is a RAD 25GX.

Loading the player ..

Vertical Use - magnetic hold Demo
Embeded magnets in the Lockrite Backup Nut hold the Backup Unit in place, making it Hands Free for safe single person pipe Flange bolting application.

Pneumatic Torque Wrench used is a RAD 25GX.




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 Release allows removal with half turn of bolt
- see VIDEO above

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

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


Ultra Torque Sockets
GOLD Ultra Torque Sockets
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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