IRWIN_ManufacturerAd_1 Image
Image for IRWIN-21840 from Acme Tools

Mouse over above image to zoom.

Shop IRWIN

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 4.5 out of 5 by 21873.
  • y_2016, m_11, d_24, h_6
  • bvseo_bulk, prod_bvrr, vn_bulk_0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_13, tr_21860
  • loc_en_US, sid_10001_10751_3074457345617022986, prod, sort_[SortEntry(order=AGE, direction=DESCENDING)]
  • clientName_acmetools
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getAggregateRating, 46ms
  • REVIEWS, PRODUCT
Availability
 In-Stock

Ships in 1 business day

SHIPPING & HANDLING
List: $8.56
Now: $5 .89

Add to Cart
Low Price Guarantee

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 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
  • y_2016, m_11, d_24, h_6
  • bvseo_bulk, prod_bvrr, vn_bulk_0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_13, tr_21860
  • loc_en_US, sid_10001_10751_3074457345617022986, prod, sort_[SortEntry(order=AGE, direction=DESCENDING)]
  • clientName_acmetools
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getReviews, 0ms
  • REVIEWS, PRODUCT