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Craftsman 3 in. 90 deg. Quick Release Corner Clamp

Item# 00931508000P | Model# 31508 | Added on May 13, 2010 |
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Craftsman 3 in. 90 deg. Quick Release Corner Clamp
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Description Specifications
Craftsman 3-in 90-deg Quick Release Corner Clamp Keeps You Precise and Saves Time With the Craftsman 3" 90-degree quick-release corner clamp, you can lock down your 90-degree corners and get to cutting, drilling or glueing. Simply slide your corner pieces into the jaws of the clamp, which comes equipped with jaw protectors, making sure to prop up any long ends. From there, it is already as tight as you need it. You have plenty of time to let glue dry or decide how best to secure your joint. The Craftsman 3-in 90-deg quick-release corner clamp eliminates the need to slowly unwind the jaws of your clamp. With 3" jaw width and 2.5" throat depth, this clamp is not going to take up a lot of room, either. It's total dimensions are just 16" x 8" x 11.75".

  • Craftsman 3" 90-degree quick release corner clamp comes with jaw protectors
  • Clamp measures 16" x 8" x 11.75"
  • Jaws measure 3" with a throat depth of 2.5"
  • Quick release mechanism makes it fast and easy to unload the clamp
  • Clamp force is 1000N
  • Steel gray and black design is inconspicuous
  • The entire clamp is made out of metal components
  • The clamp creates a 90-degree angle for 90-degree joints
This product comes with:
Product Warranty
WARNING: California Residents - Proposition 65
Ratings & Reviews

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(64 Ratings)
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By Mr-Mac
December 23rd, 2011
Craftsman 3 in. 90 deg. Quick Release Corner Clamp

I use this thing a lot now that I have it!  I used to use a band clamp for box corners and such but with this I can clamp the sides quickly and pin with a nailer and move on to another corner!  I should have bought this long ago!

Tightens well and leaves no marks.  Lightweight yet strong and the price is certainly right!

14 found this review helpful
By SteveB100
October 28th, 2014
Poor Workmanship

I bought 2 of the 90 deg. clamps. Each had a problem concerning workmanship. That is there was poor workmanship. The first problem was that one of the 2 clamps in one of the 90 deg. clamp units did not tighten. Instead the clamp's quick release engaged and then disengaged as I tightened the clamp to secure a work piece. If the quick release worked properly it would have remain engaged until I pushed on it to disengage it and thereby loosen the work piece. The problem was caused because the quick release was not working properly. I just exchanged the 90 deg. clamp at the store. The second 90 deg. clamp works properly but while working with it one of the screws holding a plastic insert in the jaws of one of the two clamps fell out and onto the floor. The plastic piece just protects the work piece from marring. I tried to tighten the screw but it turned out the threaded hole in the plastic was stripped. I kept the second 90 deg. clamp since the store in Brockton did not have any more units and it still functioned well. I just glued the screw in the hole. My conclusion is that the 90 deg. clamp is an excellent idea but there are problems with the quality of the product caused by poor manufacturing practices.

1 found this review helpful
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Shelton Marshall
| Earned 23 community points in Craftsman


I bought 1 to try out. It worked so well and so I bought another one.

July 23rd
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| Earned 122 community points in Craftsman
July 7th
| Earned 8 community points in Craftsman


July 7th
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have it

Quick Release Corner Clamp


The clamp works fine. However, I ordered TWO and only received ONE!! (I did however, get credit for one. But now I have to order ANOTHER one!!

April 9th
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have it





March 20th
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David Crawford
Craftsman 3 in. 90 deg. Quick Release Corner Clamp
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August 4th, 2015
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August 4th, 2015