Easy
Less than 15 minutes
This is a Manufacturer Approved replacement nut for Lawn and Garden equipment. This item is Metal an is Sold Individually. A lock nut is a type of nut that resists loosening when properly threaded onto a bolt. The purpose of this Nut is to secure the Cutting Blade to the Mowers Spindle/Shaft.
You would need a Wrench to tighten or loosen this Hex Nut.
Hex Nut 90561895
OEM part for: DeWALT, Black and Decker
Part Number: 90561895
$4.99
In Stock
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This Hex Nut will fit the following 118 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Black and Decker
Show More Compatible ModelsThis item works with the following types of products:
- Lawn Mower Parts
This part replaces obsolete part #: 239487-00
Customer Part Reviews ?
Average Rating (out of 5):
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Hex Nut
Just fine!
Guest -
March 30, 2022
Verified Purchase
part fit perfectly
parts came in perfect condition; replacing these parts saved my buying a new mower. Thanks!!!
Michael -
August 16, 2021
Verified Purchase
Lawnmower blade repair
Fit was perfect and delivery was very quick.
Michael -
August 14, 2021
Verified Purchase
Parts fitted and worked perfectly!
Keep up the good work!
Guest -
May 8, 2021
Verified Purchase
Outstanding service and shipment.
I ordered several parts for my 10 year old walking mower.
They all arrived in about a week which was excellent. All were authentic Black & Decker parts and fit perfectly. My mower is like new again, given the exception of some scratches and paint loss.
Good job Ereplacementparts.
Thank you and keep up the good work.
Tareq -
December 8, 2020
Verified Purchase
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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.
Hit a stake in the ground and it shattered the above parts.
mary - June 11, 2016
👍 2 of 2 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Took off ruined parts & replaced them with the new ones.
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The blade and fan needed to be replaced.
Daniel - April 12, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
Last summer I took the blade off to sharpen. I didn't give enough attention on how the items on the blade/fan shaft went back together, which resulted with the blade not being secure, and untimely being out of balance, which damaged the fan. I decided to replace everything on the blade/fan shaft.
Starting closest to the mower, I replaced the Spacer, no problem there. Next was the Fan, once again, no problem. Followed by the Blade, and it tells you what side should face the ground written right on it. Now, this is the point where you need to pay attention. What is next is called an Insulator followed by another spacer. The insulator has ridges on each side of it, that will straddle the blade on one side, and the metal spacer on the other side. Each have a oval hole in the center and you need to make sure each is pushed far enough on to the shaft to fit snugly on the oval part of the shaft. The tricky part for me was to keep everything lined up and inside of the ridges, plus keeping everything pushed up on the shaft to expose the threads for the Hex Nut to get started. Once the Hex Nut is started, the only thing you need to do at that point is to make sure everything stays lined up as you tighten the Hex Nut. As you tighten Hex Nut, and the blade and insulator and the metal spacer become not aligned, loosen the Hex Nut enough to get everything back in line and start tightening again. Hope this helps.
Starting closest to the mower, I replaced the Spacer, no problem there. Next was the Fan, once again, no problem. Followed by the Blade, and it tells you what side should face the ground written right on it. Now, this is the point where you need to pay attention. What is next is called an Insulator followed by another spacer. The insulator has ridges on each side of it, that will straddle the blade on one side, and the metal spacer on the other side. Each have a oval hole in the center and you need to make sure each is pushed far enough on to the shaft to fit snugly on the oval part of the shaft. The tricky part for me was to keep everything lined up and inside of the ridges, plus keeping everything pushed up on the shaft to expose the threads for the Hex Nut to get started. Once the Hex Nut is started, the only thing you need to do at that point is to make sure everything stays lined up as you tighten the Hex Nut. As you tighten Hex Nut, and the blade and insulator and the metal spacer become not aligned, loosen the Hex Nut enough to get everything back in line and start tightening again. Hope this helps.
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Needed a new hex nut, spacer, and blade insulator.
Jay - June 1, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set
Parts Used
Watched YouTube and followed the example. Worked perfectly. So glad ReplacementParts had exactly what I needed...for a five year old mower, no less!
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Fan and spacer were damaged, and the blade was not engaged with the drive mechanism. It was just spinning freely.
Kenneth - June 1, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
Removed the fan, spacers and blade and associated components on the shaft, and replaced them all in the reverse sequence from which they were removed. Only needed one wrench to do the job.
Side note: I was ready to throw the mower away during the annual citywide curbside pickup day, until I took one last look. All 6 parts I needed to replace were easily found on eReplacementParts.
This mower should be good for another 15 years!
Very pleased!
Side note: I was ready to throw the mower away during the annual citywide curbside pickup day, until I took one last look. All 6 parts I needed to replace were easily found on eReplacementParts.
This mower should be good for another 15 years!
Very pleased!
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Needed new blade
Russell - May 7, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
1. Turned mower up side down.
2. Removed existing hex nut and removed old blade.
3. Lost hex nut.
4. Order new blade and hex nut.
5. Received parts BEFORE promised delivery date!
6. Installed new blade and secured with new hex nut.
7. Mowed the lawn.
2. Removed existing hex nut and removed old blade.
3. Lost hex nut.
4. Order new blade and hex nut.
5. Received parts BEFORE promised delivery date!
6. Installed new blade and secured with new hex nut.
7. Mowed the lawn.
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Old lawnmower blade, and broken fan
James - April 12, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set, Adjustable Wrench
Removed bolt holding blade and removed: blade, fan and blade spacer.
Installed new blade spacer, fan, blade, and hex nut.
Done! Super easy, and the parts were perfect. Should have done this years ago.
Installed new blade spacer, fan, blade, and hex nut.
Done! Super easy, and the parts were perfect. Should have done this years ago.
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Elec fan blade broken, & missing parts
John - April 12, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set
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Missing nut and spacer
Christine - November 9, 2017
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Adjustable Wrench
Installed the new blade, then the insulator, then the spacer, then tightened the nut on the spindle
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The nut was lost.
Steve - November 3, 2017
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
Parts Used
Screwed the nut on.
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Blade bent.
Raymond - June 23, 2017
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Adjustable Wrench
Removed and replace all parts of the blade shaft.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
