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Home>Nut & Bolt Gauges>Thread Checker
Wall Mounted Thread Checker
Part Number SWTC-WM1
Wall Mounted Thread Checker
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Thread Checker Patent Logo

The Thread Checker you've all been waiting for is here...                

The Wall Mounted Thread Checker

Quickly identify the most common size nuts & bolts in one easy-to-display center!  Starting from the top you have 28 female threaded holes to identify common inch & metric bolt sizes, following that you'll find 28 male threaded studs to identify nut sizes and at the bottom you'll find screw diameter & bolt length checkers.  Mounted on heavy-duty 1/2 Inch Sintra board and predrilled for easy installation, the Wall Mounted Thread Checker is ready to start saving you time and money by ensuring you have the right fastener for the job - the first time!
The Wall Mounted Thread Checker, also known as a Thread Verifier or Thread Identifier is a great addition for any Home, Hobby, or Inventor's Work Shop; Auto, Motorcycle, Marine, ATV or RV Repair Shop; Heavy Equipment Repair Shop, Military Equipment Repair Station, Machine Shop, Fabricating Shop, Assembly Department, Production Department or Quality Inspection Station!


  • Bolt thread checker in both standard and metric sizes
  • Nut thread checker in both standard and metric sizes
  • Bolt length checker in both standard and metric sizes
  • Screw size checker in both standard and metric sizes
  • Mounted on heavy-duty 1/2 Inch Sintra® board

SWTC-WM1 Size Specifications:

Inch: 6-32, 8-32, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20; 9/16-12, 9/16-18

Metric: M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75

Want your company name or logo on the Thread Checker?
These unique tools also make excellent promotional items!  Give them away to your best customers, take them to trade shows and hand them out to serious prospects.  Forget personalized pens, mugs, and key chains...give them something they will use and tell their friends about!  If you really want to make an impression, get the Thread Checker personalized with your company logo today!

Customize Your Wall Mounted Thread Checker

*Minimum Order quantity for customization is 100 pieces.  Call us for a quote today!

Made in USA Logo

  • Customer Reviews Average Rating review View All Reviews
    I use this tool in the automotive program at a community college for my students and it works great.
    Reviewed by: Mark Weller from California. on 9/24/2014
    Thread checker is great for sizing odd nuts and bolts. No need to go to hardware store with a pocket full of samples. Got mine as an incentive prize at work and bought one for my sons birthday. Nothing but envy from all who see it. Best of all a quality product made in the USA !
    Reviewed by: Chris Hamel from Massachusetts . on 8/15/2014
    Medical Doctor
    I love to work in the garage/shop but my time is very limited due to my career. I have always wanted a product like the thread checker but never pulled the trigger to buy one until now. I have been amazed at the time it saves me when dealing with nuts/bolts and what used to seem like hours searching for the right combination now takes seconds. Phenomenal product that I will recommend to anyone/everyone! Super product and excellent quality! Thanks!!!!!
    Reviewed by: Jeff Peterson from Greeley, Colorado. on 8/8/2014
    Wall Mounted Thread Checker.
    I use to always have to go to my neighborhood hardware store to check the size of a bolt or nut. Finally, got tired of the commute and went online to find Threaded Tool Supply Co. The wall mounted thread checker is mounted near all my tool boxes and the best part is, it's mounted right on my garage wall. Also, scored free shipping here to Hawaii, which helped me out on my total bill.
    Reviewed by: Ryan from Hawaii. on 8/7/2014
    Best price on a wall mount thread checker I could find on the net. Works perfectly, easy to mount and is not an eyesore hanging on the wall. All studs and threaded inserts are mounted securely into the backing board. Label is clear and easy to understand.
    Reviewed by: Stanley Ward from Dublin NC. on 7/11/2014
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