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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
    Prototype Development
    Used it four times right out of the box. Great quality, made in USA. Thread checker will be used often in our shop.
    Reviewed by: Mike from Fort Wayne, Indiana. on 1/25/2016
    Director of Development; Extended Technologies LLC
    I'm in the process of sorting several thousand metric, UNC, UNF and UNS fasteners. The wall mounted thread checker has proven invaluable for this work. It covers all sizes and threads that I am sorting with the exception of the smallest sizes, which I can add to the checker myself.
    Reviewed by: Theodore Cannon from Golden, CO. on 1/19/2016
    Having farm property 15 miles from the nearest hardware store, the thread checker is just what I wanted. I can check thread sizes when needed to either replace from my stock or know exactly what to buy when I go to town.
    Reviewed by: John Perry from Greensboro, N.C.. on 12/30/2015
    Common Man
    My son Steve and I were talking about how great it would be for a thread checker to be sold retail, such as the type that is used at Ace Hardware. I went on to say that I know many, many, other car guys, etc., feels the same as we do. I got on the Web that night, and found this company. I got on the phone and ordered two of them. One for myself, and one for my son. They are of very good quality, and I love using mine.
    Reviewed by: Ted Blades from Falmouth, KY. on 11/5/2015
    Retired Home Shop
    Once again, for the Super d Duper Rapid, *FREE SHIPPING* & Quality Product... I Truly Thank You Thread Tool Supply! Upon arrival, once it was unpacked. So impressed was I with this (wall mount) Thread Checker. I mounted it immediately! Already used it a dozen times & I just love having this gauge in my shop! So simple to use & extremely accurate! To all of you who don't have one of these... Don't hesiate to shop here & GRAB ONE!
    Reviewed by: Gman from Maui Hawaii. on 8/16/2015
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