Why doesn't the metric include 18mm?

Did not notice ! But am very disappointed that the 18mm sizes are missing from the metric ser as well as the 7/8 sizes are missing from the SAE/inch setcolete sets. I plan to call Thread Checker on it.

18mm and 7/8 sizes are not included? Can the seller/maker explain that & do you have another set which includes them?

I've been talking with the company requesting additional checkers to add to the ring. The ones that are skipped are: M18-2.5, M14-1.25, 7/8"-9, 7/8"-14, and #8-36 sizes. Technical support told me they will pass this info "up the ladder", so I'm hopeful. These last few checkers would make this the PERFECT set.

Why is #12-24 also missing?

Your right it is not included. That size is not available either.

how do they detach from the cable so you can check things like holes on the side of an engine block if you don't want to stick the chain down there?

I used split ring key chains to attach to each gauge and then added all to large split ring. 5/8" for small gauges, 7/8" for large size. then added to either a 2" for a Metric- S.A.E. or for one ring combined I used a 3" split ring. This is a way that each gauge can be removed and returned when needed. Enjoy!

Nut And Bolt Thread Checker Complete Sae Inch And Metric

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Description

🔧 Master every thread with confidence — don’t get left out of the precision club!

COMPACT PORTABLE - Lightweight 2.55 lbs set fits easily in any professional toolkit
ALL IN ONE PRECISION - Covers 23 SAE and 21 Metric thread sizes for ultimate versatility
DUAL FUNCTION DESIGN - Each gauge checks both nuts and bolts, saving time and hassle
DURABILITY YOU CAN TRUST - Thread sizes permanently stamped for lifelong readability
HIGHLY RATED RELIABILITY - 4.7-star average from over 1,300 users proves trusted performance

The Nut and Bolt Thread Checker Set offers 44 of the most common SAE and Metric thread sizes, each with dual nut and bolt gauges permanently stamped for easy identification. Lightweight and compact, this professional-grade tool is highly rated for accuracy and durability, making it an essential addition to any manager’s or technician’s toolkit.

Specifications

ASIN	B06ZYD4SS8
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#272,922 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,018 in Nut & Bolt Assortment Sets
Color	Original Version
Customer Reviews	4.7 4.7 out of 5 stars (1,321)
Date First Available	April 14, 2017
Included Components	Two sets of thread checkers
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	2.55 pounds
Item model number	SWTC-M21
Manufacturer	Thread Checker
Number Of Pieces	2
Package Dimensions	7.83 x 6.89 x 2.8 inches
Part Number	SWTC-M21
Size	One Size

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£76.16

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In stock

Sold byAmazon UKDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UK.

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TrustScore 4.5 | 7,300+ reviews

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Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set) (Packs)

Description

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Common Questions