Part Location Diagram of 782401-1 Makita Lock Nut Wrench
See part 404 in the diagram
( Grid squares measure 1x1 inch )

Lock Nut Wrench 782401-1

Manufactured by:
Makita
ERP Number:
ERP10154215
Part Number:
782401-1
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

Easy 

Less than 15 mins 

(11 rated repairs) ?

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Product Description

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Genuine Makita replacement part used on Angle Grinders and Plate Joiners. This Wrench allows you to secure a Cutter Blade or a Grinding Wheel to the tool. Angular profile of this item makes tightening/loosening the lock nut easy, as it stands off from the disc. This wrench is made from Metal and it is Sold Individually. Please be aware that this wrench will not fit the 5/8" lock nut. You need a separate wrench for the 5/8" lock nut.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Makita
This part works with the following products:
  • Angle Grinder

Customer Part Reviews

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4.9
Average Rating (out of 5):
★★★★★
★★★★★
(13 Reviews)
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Questions & Answers

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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

Easy 

Less than 15 mins 

(11 rated repairs) ?
  • 1
  • 2
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Old wrenches were barely usable

WG from Mackinaw City, Michigan

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Wrench set
Parts Used:
782401-1, 781007-2
Parts ordered and used the wrenches, worked great
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Wrenches were lost.

Thomas from CINCINNATI, Ohio

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
782401-1, 781007-2
Used the wrenches to change grinder wheel.
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Wheel cover was missing and needed new wrenches

ben from mount vernon, Washington

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
782401-1, 781007-2, 342554-4
Removed the grinding disk and lined up the wheel cover and put the screws in. And used my new wrenches. Thank you.
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Lock nut on cutting wheel on grinder was seized up.

Raymond from Allegany, New York

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Parts Used:
782401-1
Tried to use lock nut wrench that came with grinder to loosen lock nut, put could not move it and actually bent the wrench, I ended up using o pipe wrench to break the lock nut free. I therefore had to replace the wrench and lock nuts.
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Just missing tools to unlock the disc from the grinder.

Randal from Honolulu, Hawaii

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Wrench set
Parts Used:
782401-1, 781007-2
Unlocked the disc with the new wrenches and installed the new grinder disc.
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Needed new blade but tool was lost for changing it

Verna from Benicia, California

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
782401-1
Took off old grinder wheel put on new one
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Missing parts for changing grinding accessories

Robert from Mamaroneck, New York

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Wrench set
Parts Used:
782401-1, 781007-2
The tools provided by eReplacement Parts were perfect to get the job done. Thanks very much
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Had lost lock nut wrench

Bonnie from Harker Heights, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
782401-1
After receiving lock nut wrench, able to complete job
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I needed a replacement handle and had lost the wrenches needed to change discs easily.

Robert from Coral Springs , Florida

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
782401-1, 781007-2, 153489-2
These parts were direct replacements and worked as designed. Thanks
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Lost original wrenches for removing discs

Tommy from North Richland Hills, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
782401-1, 781007-2
Replaced the worn out disc
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Model Cross Reference

This part works with the following models:
ERP Number: ERP10154215
Manufacturer Part Number: 782401-1
Brand Model Number Description
Makita 3901 Biscuit Joiner - Plate Joiner
Makita 9501B Angle Grinder - Grinder
Makita 9501BKIT Grinder - Grinder
Makita 9514B Angle Grinder - Disc Grinder
Makita 9523NBH Angle Grinder - Angle Grinder
Makita N9501BZ Angle Grinder - Disc Grinder
Makita N9514B Angle Grinder - Grinder
Makita PC1100 Planer Jointer - Concrete Planer
Makita PJ7000 Biscuit Joiner - Plate Joiner
Makita XJP03Z Planer Jointer - Jointer