Lifetime Customer Support and 1 Year Warranty
Quickly identify confusing bolt and nut sizes with our Nut and Bolt Thread Checker, classify them neatly and store them for easy repair and maintenance work! Suitable for craftsman, engineers, and DIY enthusiast or hobbyist.

Your Go-to Tool for Nut & Bolt Identifying! 📏

Quickly identify confusing bolt and nut sizes with our Nut and Bolt Thread Checker, classify them neatly and store them for easy repair and maintenance work! Suitable for craftsman, engineers, and DIY enthusiast or hobbyist.

Simplify your projects by quickly verifying thread pitches, bolt sizes, and more with ease. Compact, durable, and easy to use, this thread checker is a must-have for workshops, garages, and toolboxes.

Precise Measurement

Simplify your projects by quickly verifying thread pitches, bolt sizes, and more with ease. Compact, durable, and easy to use, this thread checker is a must-have for workshops, garages, and toolboxes.

28 Holes: M4 x 0.7 to M14 x 2.0 metric threads and #6 - 32 coarse threads to 1/2 - 20 imperial threads sizes. 44 Holes: M4x0.7 to M14x2.0 in metric thread sizes and 6–32 fine to 1/2–20 fine in standard threads sizes.

28/44 Holes Options

28 Holes: M4 x 0.7 to M14 x 2.0 metric threads and 6 - 32 coarse threads to 1/2 - 20 fine standard threads sizes.

44 Holes: M3 x 0.5 to M24 x 3.0 metric threads and 6-32 coarse to 1-12 fine standard threads sizes.

Made of CNC machined anodized aluminum alloy 6061 and SUS304 stainless steel, meet Go & No Go Class 2B ANSI standards for both internal and external threads. With a protective anodized finish, the laser etched markings will not fade or scratch off.

Aluminum Alloy & Steel Material

Made of CNC machined anodized aluminum alloy 6061 and SUS304 stainless steel, meet Go & No Go Class 2B ANSI standards for both internal and external threads. With a protective anodized finish, the laser etched markings will not fade or scratch off.

Customer Reviews

Based on 7 reviews
100%
(7)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
N
NICHOLAS PIZZOLA
Nut and Bold Thread Checker

Super handy. No more frustration guessing either standard or metric thread size. Great time saver

S
SWI
Excellent addition to our bold crib

This sturdy, robust tool is going to be a great addition to our bolt crib. Random bolts are always left around and no one knows where to put them back. I already found a few loose ones that I was able to put back. This is great!

A
Atalo
Easy to use and verified sizes

Easy to use and verified sizes, i had used multiple time for different size work vey well.

W
Wes Taylor
This is made well

The standard and metric guide is well built and pretty easy to use

J
Josh Wakamatsu
High quality and looks great

High quality aluminum, bolts were nice and polished, has rubbery bumper pieces on the back so it doesnt scratch anything up. Comes with stainless mounting screws. Im happy with my purchase.

S
Stephen Howden
Wish I had this sooner

So helpful to have. I use it way more than I expected

M
Mostly Avg Joe
Turned a horrid task into a mundane one.

This product made the horrid nightmare a simple task that saved heaps of time over the old on a chain method or other alternatives.The amount of time I saved sorting through a large bowl of mixed bolts, screws, washers and nuts makes this best value of any tool I own.