Thread Checker, Rustproof Nut and Bolt Thread Checker, Wall-Mountable Bolt Size Finder Tool, 15 SAE & 15 Metric Thread Gauge, Bolt and Nut Sizer for Quick Measurement
Condition: New
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 3 left in stock, order soon!
Arrives
Sunday, Mar 15
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Size: 30 Thread Checker
Color: Red
Features
- Precision Sizing: Our nut and bolt thread checker is meticulously crafted from CNC-machined to adhere to the Go & No-Go Class 2B ANSI Standard, ensuring accurate sizing for both internal and external threads. Say goodbye to second-guessing and mismatched hardware embrace flawless accuracy effortlessly.
- 30 Nut and Bolt Thread Sizes: Our nut and bolt thread checker instantly identifies 30 distinct sizes, covering Metric thread sizes from M3 x 0.5 to M14 x 2.0, and Imperial threads from #4 - 40 Coarse to 1/2 - 20 Fine. Each size comes with both a male thread (for nuts and washers) and a female thread (for bolts and screws), ensuring compatibility with all your standard hardware!
- Easy to Use: Our bolt and nut identifier gauge simply matches your nuts and bolts to the corresponding slots to identify the size and pitch accurately. The intuitive design and easy-to-read laser-etched markings make using our thread checker a breeze, even for beginners.
- Multi-Functional Design: Our screw thread gauge is crafted from 6061 aluminum with a sleek anodized finish, ensuring durability and resilience. Convenient 15CM and 6-inch rulers on both sides. It's a tool designed for lasting reliability and convenience.
- Versatile Mounting Options: Featuring a convenient hanging hole, our thread checker offers versatile mounting options. Hang it on your workshop wall for easy access, or let it sit securely on any surface as you work the choice is yours!
Product Dimensions: 17.5 x 5.3 x 1.6 inches
Item Weight: 14 ounces
Manufacturer: Joblikebrez
Item model number: Thread Checker
Is Discontinued By Manufacturer: No
Date First Available: January 17, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Mar 15
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 76 Thread Checker
Color: Red
If you work with a lot of loose nuts and bolts, this is a really nice helper for organizing them. It is well-made, and based on the nuts and bolts I've sized, it is accurate. I have mine hung behind a cabinet door in my garage workshop, so it is readily accessible. Having priced out others, I believe this is a good value. Of course, it covers a lot of sizes, but not all possible sizes, but most of the common ones.
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Reviewed in the United States on December 28, 2025 by Bob Amis
Size: 30 Thread Checker
Color: Red
This will be so handy with both SAE & metric sizes. A Nicely made all metal device [not plastic]. It's already solved an irritating nut problem. A tiny 6-32 dillemia quickly & easily rectified for a porch light cover. Brass knurled nuts promptly acquired & installed.
Reviewed in the United States on January 16, 2026 by Harold
Size: 30 Thread Checker
Color: Red
Very nicely made and good price. Plate is a little thin for the length of the female threads but perfectly sufficient.
Reviewed in the United States on February 23, 2026 by Daniel A. Mosher
Size: 30 Thread Checker
Color: Red
This device is well made and easy to use. The construction is rugged and it is surprisingly heavy even though the base is aluminum. There are two rows of male and female fixtures. The left side is metric and the right side is Imperial. I found it was easiest to start with the male fixture for sorting both nuts and bolts. To sort nuts just try threading the nut onto each male fixture to see which one is a match. For bolts and screws it is easiest to start by visually checking which male piece is a near match by aligning the threads as shown in the photo. Then a final check can be made by screwing the bolt into the corresponding female opening. This is a fast way to match bolts, and it minimizes the risk of cross threading a bolt into the softer aluminum section. This worked great for sorting my junk drawer of miscellaneous nuts and bolts.
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Reviewed in the United States on July 16, 2025 by James S James S
Size: 30 Thread Checker
Color: Red
Not only is this a beautiful looking tool hanging on my shop wall, it works great, it takes no time at all for me to figure out if something is metric or SAE and what the thread pitch and bolt size is. I really don’t know why I waited so long to buy something like this. It’s way better than all of the other ones I have
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Reviewed in the United States on December 18, 2025 by Christopher P. Eggleston
Size: 30 Thread Checker
Color: Red
This helped me visually show customer their lug nut was the wrong size for the vehicle. The quality is build very well, definitely value able for the price. The only issue is the rubber pads have already fallen off, very minor complaint.
Reviewed in the United States on August 27, 2025 by Dustin Jacobs
Size: 30 Thread Checker
Color: Red
This was definitely worth the price. It’s well made, metal instead of plastic. It will last.
Reviewed in the United States on December 31, 2025 by HecKnJeck
Size: 30 Thread Checker
Color: Red
Good quality, solid product. The threads are all clean and smooth. Saves me carrying nuts and bolts to compare by ripping open packages at Home Depot to test. A magnet on the back would be a great addition.
Reviewed in the United States on January 4, 2026 by Spudpop