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7-1/4 In. 140T Plywood/OSB/Veneer Saw Blade

IRWIN-21840

This circular saw blade features precision ground teeth for smooth, accurate cuts. The fully hardened plate runs truer longer.... read more

Rating:
IRWIN-21840 is rated 1.0 out of 5 by 2.
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Availability
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List: $8.56
Now: $5 .89

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Features

This circular saw blade features precision ground teeth for smooth, accurate cuts. The fully hardened plate runs truer longer.

Additional Features

  • Extended life
  • 5/8 In. arbor w/ diamond knockout
  • Heavy gauge high carbon steel construction
  • For use in plywood, OSB, veneer, and plastic
Specifications
13/16 inch Diamond Arbor Knockout: Yes
Acme Tools Brand Name: IRWIN
Acme Tools Part Number: 21840
Arbor Hole Size: 5/8 in
Assembled Weight (lbs): 0.632
Blade Manufacturing Method: Stamped
Blade Tooth Material: Carbon
Country of Origin: CHN
Expansion Slots: No
Internet Product Code (IPC): BB86091C1EE
Kerf (in): 0.078
Kickback Limiters: No
Material Cut: Plywood
Maximum RPM: 3500
Net Tool Weight (lbs): 0.64
Non-Stick Coating: No
Tooth Count: 140
Package Contents: 1 saw blade
Package Weight: 0.64
Plate Thickness (in): 0.625
Progressive Blade Tooth Spacing: No
Blade Diameter (in): 7 1/4
Saw Blade Type: Circular Saw
Set / Individual: Individual
Tooth Configuration: Alternate Top Bevel (ATB)
Vibration Dampening Technology: No
Warranty: Yes
Internal Supplier Part #: 21840ZR
MFG Model # (Series): 21840ZR
MFG Part # (OEM): 21840ZR
Product Name: 7-1/4 In. 140T Plywood/OSB/Veneer Saw Blade
UPC: 024721218407
Top Rated: 1.0
Acme Tools Air Shipment Restricted: N
Acme Tools Prop65 Compliant: N
Acme Tools Carb Compliant: N
Customer Reviews
Rated 1 out of 5 by from Something wrong here... I purchased SIX 11170 10" steel saw blades. I am old fashioned and just like steel. The first one I opened cuts worse than the dullest blade I own. Less than a foot into some 3/4" plywood and it starting to smoke and got hard to push the piece through the cut. Tried a couple more brand new blades. Same thing. Switched over to my old used dull blade to get the job done. Something is wrong here... maybe a manufacturing error or something.
Date published: 2017-02-14
Rated 1 out of 5 by from I just don'tunderstand it. I have two of the Irwin Classic 7-1/4" 140 Tooth blades that are useless. The first one I used 2 or 3 yeras ago to build a work bench with OSB top and shelves. I probably cut a total of 16 feet of 7/16" OSB before it gave out. I thought I had done something wrong so I let it go at that. Then recntly I needed to cut some more 7/16 " OSB and the first 8 foot rip went great. I got about 18" into the second rip when the blade went dull and started cutting crooked. I smoked my way through the cut and looked for a reason why this happedned. I couldn't find one. I put the Makita combination blade that came with my saw and cut another 16 feet with ease. The Makita blade has cut hundeds of feet of wood. I now know that it is unnecessary to use a fine tooth blade to cut OSB for my purposes.
Date published: 2014-06-28
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