Close
Phone 1-855-343-0069
Cart
Official OEM Guarantee
Fast shipping from USA
365 Day Returns
Preferred Brand Partners
10128128-1-M-Milwaukee-40-50-8040-Spring
Part Location Diagram of 40-50-8040 Milwaukee Spring
See part 38 in the diagram
( Grid squares measure 1x1 inch )
10128128-1-S-Milwaukee-40-50-8040-Spring 10128128-2-S-Milwaukee-40-50-8040-Spring 10128128-3-S-Milwaukee-40-50-8040-Spring Part Location Diagram of 40-50-8040 Milwaukee Spring

Spring 40-50-8040

Manufactured by:
Milwaukee
ERP Number:
ERP10128128
Part Number:
40-50-8040
Original Equipment Manufacturer ?
  Works with your model  6390-20!
$5.95
★★★★★
★★★★★
1 Review
In Stock
Delivers in 3-5 Business Days!
Minimum Quantity of 2 required

A Bit Difficult 

15 - 30 mins 

(2 rated repairs) ?
  Works with your model   6390-20!

Jump to:

Description Frequently Purchased Together Troubleshooting Reviews Questions & Answers Repair Instructions Model Cross Reference

Product Description

?

This is an OEM part sourced directly from the manufacturer. The spring is designed for use in circular saws and miter saws. This part is made of metal, and may be found in various locations in the machine, depending on model. Please be aware that there are different springs used in the machine. Refer to the parts diagram to be sure of ordering the correct part. This item is sold individually.

Frequently Purchased Together

?

Troubleshooting

This part works with the following brands:
  • Milwaukee
This part works with the following products:
  • Circular Saw
  • Saw
  • Miter Saw
  • Reciprocating Saw
★

Customer Part Reviews

?
4.0
Average Rating (out of 5):
★★★★★
★★★★★
(1 Review)
Click to filter by ratings:
  • 5 stars
    0
  • 4 stars
    1
  • 3 stars
    0
  • 2 stars
    0
  • 1 star
    0
  • 1
Sort by:  
Sorry, we couldn't find any existing reviews that matched. Try using some different or simpler keywords.
★★★★★
★★★★★
Easy repair
I snapped the locking lever. Ordered parts before opening it up and swing what I needed. Ordered this and a couple more parts due to being cheap and I’m sure they were getting wore out due to the temporary fix I made to make it work with a broken lock lever. Awesome site. Great price on parts. Easy to read manuals. Will use this site more often
Sam - March 21, 2023
Verified Purchase

Questions & Answers

?

Our customer Service team is at the ready daily to answer your part and product questions.

Be the first to ask our experts a question about this part!

Ask our Team

We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.

Does this fit my product?

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.

A Bit Difficult 

15 - 30 mins 

(2 rated repairs) ?
  • 1
Sort by:  
Sorry, we couldn't find any existing installation instruction that matched.

Missing spring.

Bobby from Macungie, Pennsylvania

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Socket set
Parts Used:
40-50-8040
Replaced the missing spring.
Did you find this story helpful?
Thank you for voting!

No power. Tested switch and brushes. they checked out ok.

brenda from mosier, Oregon

0 of 1 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Parts Used:
40-50-8040, 14-20-1090
Removed handles. Removed speed selector. Had to splice wire leading to switch as it could not be removed. Wires had to be carefully routed.

Replaced handles.
Did you find this story helpful?
Thank you for voting!
  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP10128128
Manufacturer Part Number: 40-50-8040
Brand Model Number Description
Milwaukee 0730-20 Circular Saw - Cordless Circular Saw
Milwaukee 0730-22 Circular Saw - Cordless Circular Saw
Milwaukee 0730-50 Saw - Milwaukee 0730-50-(A57a) Parts
Milwaukee 0740-20 Circular Saw - Cordless Metal Cutting Saw
Milwaukee 0740-22 Circular Saw - Cordless Metal Cutting Saw
Milwaukee 0830-50 Circular Saw - Cordless Circular Saw
Milwaukee 2630-20 Circular Saw - 18 Volt Circular Saw
Milwaukee 2630-22 Circular Saw - 18 Volt Circular Saw
Milwaukee 6230-22 Circular Saw - Cordless Metal Cutting Circular Saw
Milwaukee 6310-20 Circular Saw - Cordless Circular Saw
Milwaukee 6310-50 Saw - Milwaukee 6310-50-(057a) Parts
Milwaukee 6310-58 Circular Saw - Circular Saw
Milwaukee 6310-59 Saw - Milwaukee 6310-59-(C69a) Parts
Milwaukee 6320-20 Circular Saw - Cordless Metal Cutting Circular Saw
Milwaukee 6320-50 Circular Saw - Circular Saw
Milwaukee 6365 Circular Saw - 7-1/4&#34 Circular Saw
Milwaukee 6365-2 Circular Saw - Circular Saw
Milwaukee 6367 Circular Saw - D.I. 7-1/4&#34 Circular Saw
Milwaukee 6369 Circular Saw - D.I. 7-1/4&#34 Circular Saw
Milwaukee 6375-20 Circular Saw - 7-1/4&#34 Circular Saw
Milwaukee 6376-20 Circular Saw - 7-1/4&#34 Circular Saw
Milwaukee 6380-51 Circular Saw - 66 Mm Tilt-Lok Circle Saw W/Cs
Milwaukee 6380-55 Circular Saw - Circular Saw
Milwaukee 6390-20 Circular Saw - 7-1/4" Circular Saw with Tilt-Lok Handle
Milwaukee 6390-21 Saw - Milwaukee 6390-21 Parts
Milwaukee 6391-21 Circular Saw - Left Blade 7-1/4" Circular Saw with Tilt-Lok Handle
Milwaukee 6394 Circular Saw - Circular Saw
Milwaukee 6405 Circular Saw - 8-1/4&#34 Circular Saw
Milwaukee 6405-6 Circular Saw - 8-1/4&#34 Circular Saw
Milwaukee 6407 Circular Saw - Circular Saw
Spring
$ 5.95
In Stock
Minimum Quantity of 2 required
✖
Stock Status
✖
Mail-In Recycling Rebate

Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.

✖