Dewalt DWE6421K 3 Amp 5 in. Random Orbital Sander Kit

Dewalt Model: dewndwe6421k
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Dewalt DWE6421K 3 Amp 5 in. Random Orbital Sander Kit Dewalt Model: dewndwe6421k

Product Features & specs :

3.0 AMP Motor


Powerful motor and 12,000 orbits per minute deliver smooth performance

Rubber Overmold


Rubber overmold for a comfortable grip

Dust-sealed switch

Tool Life

Dust-sealed switch for increased tool life

Perform and Protect

Perform & Protect

Dewalt's Perform & Protect line of Power Tools is designed to provide a high level of one or more of the following: control, dust containment, or low vibration, without sacrificing performance

Dewalt DWE6421K 3 Amp 5 in. Random Orbital Sander Kit

Complete with a dust bag and carrying case, DEWALT's DWE6421K 3 Amp 5 in. Random Orbital Sander Kit features a powerful motor and 12,000 orbits per minute to deliver smooth performance in a variety of sanding applications and an ergonomic design for comfort as you work.
  • 3.0 Amp motor that spins the pad at 12,000 OPM
  • Shorter height allows the user to get closer to work piece
  • Rubber over-mold in all of the critical areas of the sander for comfortable use
  • Separate counterweight design reduces vibration for decreased user fatigue
  • Dust-sealed switch to protect against dust ingestion for longer switch life
  • Improved dust collection and interfacing with vacuum locking system
  • Dust bag has patented one-hand locking system
What’s Included:
  • 3 Amp 5 in. Random Orbital Sander - DWE6421K
  • Dust Bag
  • Carrying Case (Bag)
  • Owner's Manual
Power Source
Pad Size
5 in
UL Safety
No-Load Speed (RPM)
CSA Safety
Wifi compatibility
Case Included
Case Type
Speed Type
Bluetooth Compatibility
Dust Collection
Motor Type
Oscillations Per Minute(OPM)
0 - 12000
Switch Type
Orbit Size
3/32 in
ETL Safety
10.38 in.
7.25 in.
6.2 in.
2.9 lbs.
Warranty Term
3 Year

Reviews :

4.5 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Would you recommend this product?
Yes (6)
Powerful (5)
Easy To Use (2)
Ergonomic Design (2)
Lightweight (2)
Uncomfortable to Use (1)
Best Uses
Frequent Use (4)
Small Projects (3)
Home Repair (1)
Only 4 stars for now
Just bought this a couple weeks ago because I had to replace another one that the switch gave out on after only a couple years. DEWALT makes great tools and I depend on them because they are heavy duty and usually last a long time. This one was on sale $10 off making it a great buy. Hopefully I get more than 2 years out of it. It has good power and a nice balance. It isn’t difficult to hold for extended use. Decent dust collection but not great.
This review was collected as part of a promotion
June 3, 2020
Originally posted at
Works great
I have had this almost 1 year now and it has worked every time!
This review was collected as part of a promotion
June 2, 2020
Originally posted at
James scott
It worked great my son n law got it for me for Christmas then he passed away then my sander stop working its a dwe6421k i wish you could send me a replacement
April 22, 2020
Originally posted at
Great Product
I bought this a month ago and glad I did. Very sleek and fits well in your hand. It gets into tight places and does its job. Another great Dewalt product.
February 20, 2020
Originally posted at
Slower speed
I'm happy with tool but it would be easier for me to sand if it had a slow er speed.
December 14, 2019
Originally posted at
Great product
It collects dust quite a bit better than other companies that I have used. It also has a comfortable rubber grip so you dont wear yourself out as fast. I didn't have a plane available for a project a few weeks ago and I just used this with some coarse sand paper. Took longer than a plane but it didn't wear me out at all. Usually an orbital (in my experience fatigues your arms. I have already recommended it to a friend.
May 30, 2019
Originally posted at
Would you recommend this product?
Easy To Use
Best Uses
Frequent Use
Small Projects
Home Repair
Great palm sander
Great sander fits perfectly in palm of hand easy to use and easy to change sandpaper not heavy at all
April 12, 2019
1 year ago
Describe Yourself:
Avid Do-it-Yourselfer
Comfortable and powerful
I love this sander for the power and way it feels in my hand. My one complaint is the dust bag attachment design makes it pretty difficult to hook vacuum to. Other than that awesome sander
This review was collected as part of a promotion
November 19, 2018
Originally posted at
DeWalt Quality
When it came time to renovate my basement, I knew I would need to update my old DeWalt 18v tools.

My wife gave me clearance to buy every tool I would need.

I’ve always been a fan of DeWalt, so it was an easy choice.

I needed a new sander and I wanted one that has the hook/loop fasteners to attach the sandpaper.

I liked it so much, I bough two of them.

My only regret was not knowing that a 20v cordless model is available.

If you are reading this, just buy it. You will not regret it.
This review was collected as part of a promotion
November 16, 2018
Originally posted at
Great sander
This tool has been so useful for me over the last few months, the internal vacuum works great. I do wish the connecting hose was more universal to hook to my vacuum though.
This review was collected as part of a promotion
November 15, 2018
Originally posted at

Q & A :

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Browse 6 questions Browse 6 questions and 7 answers
how to adapt a dust collector hose to it. is there an adaptor to do this?
A shopper on Jul 24, 2017
The sanding disks no longer stick to the pad and the pad looks normal. can I treat it somehow?
RICKEY on Jun 19, 2016
BEST ANSWER: The sandpaper will eventually wear out and not stick. The pad on the sander may wear out, as well, and need to be replaced. That happened to another sander I owned, not a DeWalt.
Good luck!
I am looking for a replacement pad for a De Walt # 370916
Richard on Jul 23, 2016
BEST ANSWER: For help locating parts, please use the link provided below:
I am looking to order a Dewalt sander replacement pad for Dewalt DWF6421 orbital sander
Rog on Apr 19, 2016
BEST ANSWER: The pad assembly is part number N329079
I am looking for a replacement dust collection bag for an older DW421 model serial # 344448
Please advise if this is available and if so how do I order it?
Thank you.
Ken Adams
Ken on Nov 30, 2015
BEST ANSWER: For help with replacement parts, please contact Dewalt directly at 800-433-9258
How to clean the hook and loop pad?
A shopper on Feb 26, 2017


Most DEWALT® Tools purchased on or after January 1, 2004 come with a warranty package that includes:

Three-Year Limited Warranty. DEWALT will repair, without charge, any defects due to faulty materials or workmanship for three years from the date of purchase. This warranty does not cover part failure due to normal wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit or call 1-800-4-DEWALT (1-800-433-9258). This warranty does not apply to accessories or damage caused where repairs have been made or attempted by others. This warranty gives you specific legal rights and you may have other rights which vary in certain states or provinces.

One-Year Free Service Contract. DEWALT will maintain the tool and replace worn parts caused by normal use, for free, any time during the first year after purchase.

90-Day Money Back Guarantee. If you are not completely satisfied with the performance of your DEWALT Power Tool, Laser, or Nailer for any reason, you can return it within 90 days from the date of purchase with a receipt for a full refund - no questions asked.