Dispatch Hours
Orders dispatched Monday to Friday between 8am and 5pm (4:30pm on Fridays).
- Mon – Thurs8:00 – 17:00
- Friday8:00 – 16:30
- Sat & SunClosed
Specifically designed for metric coarse threads, these plug gauges are essential for applications that require precise and standardized threading. The go/no-go design allows for efficient inspection of threaded holes, ensuring proper fitment and functionality of components. Crafted with durability in mind, these gauges are made from hardened steel to withstand rigorous use and provide long-lasting performance.

Click any SKU to view full product details, specifications and datasheets.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-511618 | M1 | 0.25 | £160.23 | 5 days |
|
| JBO-511621 | M1.1 | 0.25 | £182.67 | 5 days |
|
| JBO-511623 | M1.2 | 0.25 | £133.53 | 5 days |
|
| JBO-511629 | M1.4 | 0.3 | £107.90 | 5 days |
|
| JBO-511636 | M1.6 | 0.35 | £99.68 | 5 days |
|
| JBO-511642 | M1.7 | 0.35 | £113.23 | 5 days |
|
| JBO-511644 | M1.8 | 0.35 | £91.67 | 5 days |
|
| JBO-511859 | M2 | 0.4 | £80.97 | 5 days |
|
| JBO-511873 | M2.2 | 0.45 | £87.37 | 5 days |
|
| JBO-511879 | M2.3 | 0.4 | £90.49 | 5 days |
|
| JBO-511883 | M2.5 | 0.45 | £69.99 | 5 days |
|
| JBO-511894 | M2.6 | 0.45 | £87.71 | 5 days |
|
| JBO-512036 | M3 | 0.5 | £57.38 | 5 days |
|
| JBO-512059 | M3.5 | 0.6 | £61.54 | 5 days |
|
| JBO-512177 | M4 | 0.7 | £53.96 | 5 days |
|
| JBO-512202 | M4.5 | 0.75 | £76.17 | 5 days |
|
| JBO-512218 | M5 | 0.8 | £52.67 | 5 days |
|
| JBO-512252 | M6 | 1 | £50.97 | 5 days |
|
| JBO-512286 | M7 | 1 | £57.59 | 5 days |
|
| JBO-512305 | M8 | 1.25 | £52.67 | 5 days |
|
| JBO-512345 | M9 | 1.25 | £71.69 | 5 days |
|
| JBO-511646 | M10 | 1.5 | £56.51 | 5 days |
|
| JBO-511679 | M11 | 1.5 | £76.39 | 5 days |
|
| JBO-511689 | M12 | 1.75 | £62.07 | 5 days |
|
| JBO-511730 | M14 | 2 | £67.62 | 5 days |
|
| JBO-511776 | M16 | 2 | £72.22 | 5 days |
|
| JBO-511820 | M18 | 2.5 | £78.53 | 5 days |
|
| JBO-511902 | M20 | 2.5 | £84.18 | 5 days |
|
| JBO-511934 | M22 | 2.5 | £89.00 | 5 days |
|
| JBO-511965 | M24 | 3 | £100.32 | 5 days |
|
| JBO-512005 | M27 | 3 | £112.17 | 5 days |
|
| JBO-512075 | M30 | 3.5 | £123.93 | 5 days |
|
| JBO-512108 | M33 | 3.5 | £138.88 | 5 days |
|
| JBO-512144 | M36 | 4 | £149.56 | 5 days |
|
| JBO-512166 | M39 | 4 | £164.51 | 5 days |
|
| JBO-511639 | M1.6 | 0.35 | £119.64 | 5 days |
|
| JBO-511645 | M1.8 | 0.35 | £112.17 | 5 days |
|
| JBO-511862 | M2 | 0.4 | £90.49 | 5 days |
|
| JBO-511876 | M2.2 | 0.45 | £115.37 | 5 days |
|
| JBO-511886 | M2.5 | 0.45 | £78.19 | 5 days |
|
| JBO-512043 | M3 | 0.5 | £66.34 | 5 days |
|
| JBO-512064 | M3.5 | 0.6 | £67.85 | 5 days |
|
| JBO-512182 | M4 | 0.7 | £62.39 | 5 days |
|
| JBO-512203 | M4.5 | 0.75 | £95.62 | 5 days |
|
| JBO-512225 | M5 | 0.8 | £61.01 | 5 days |
|
| JBO-512259 | M6 | 1 | £61.95 | 5 days |
|
| JBO-512288 | M7 | 1 | £63.35 | 5 days |
|
| JBO-512311 | M8 | 1.25 | £61.01 | 5 days |
|
| JBO-512347 | M9 | 1.25 | £87.60 | 5 days |
|
| JBO-511650 | M10 | 1.5 | £65.17 | 5 days |
|
| JBO-511680 | M11 | 1.5 | £96.26 | 5 days |
|
| JBO-511693 | M12 | 1.75 | £69.55 | 5 days |
|
| JBO-511733 | M14 | 2 | £75.00 | 5 days |
|
| JBO-511780 | M16 | 2 | £80.33 | 5 days |
|
| JBO-511822 | M18 | 2.5 | £99.68 | 5 days |
|
| JBO-511904 | M20 | 2.5 | £101.81 | 5 days |
|
| JBO-511935 | M22 | 2.5 | £110.04 | 5 days |
|
| JBO-511966 | M24 | 3 | £120.71 | 5 days |
|
| JBO-512006 | M27 | 3 | £138.88 | 5 days |
|
| JBO-512076 | M30 | 3.5 | £149.56 | 5 days |
|
| JBO-512109 | M33 | 3.5 | £168.78 | 5 days |
|
| JBO-512145 | M36 | 4 | £178.40 | 5 days |
|
| JBO-512167 | M39 | 4 | £201.91 | 5 days |
|
| JBO-517091 | M1 | 0.25 | £201.91 | 5 days |
|
| JBO-511624 | M1.2 | 0.25 | £168.78 | 5 days |
|
| JBO-511630 | M1.4 | 0.3 | £137.80 | 5 days |
|
| JBO-511637 | M1.6 | 0.35 | £124.99 | 5 days |
|
| JBO-514527 | M1.8 | 0.35 | £115.37 | 5 days |
|
| JBO-511860 | M2 | 0.4 | £103.63 | 5 days |
|
| JBO-511874 | M2.2 | 0.45 | £115.37 | 5 days |
|
| JBO-511884 | M2.5 | 0.45 | £89.53 | 5 days |
|
| JBO-512039 | M3 | 0.5 | £75.54 | 5 days |
|
| JBO-512060 | M3.5 | 0.6 | £79.27 | 5 days |
|
| JBO-512179 | M4 | 0.7 | £71.14 | 5 days |
|
| JBO-512221 | M5 | 0.8 | £69.44 | 5 days |
|
| JBO-512256 | M6 | 1 | £67.42 | 5 days |
|
| JBO-512287 | M7 | 1 | £72.33 | 5 days |
|
| JBO-512307 | M8 | 1.25 | £69.44 | 5 days |
|
| JBO-511648 | M10 | 1.5 | £74.67 | 5 days |
|
| JBO-511691 | M12 | 1.75 | £81.19 | 5 days |
|
| JBO-511732 | M14 | 2 | £90.15 | 5 days |
|
| JBO-511778 | M16 | 2 | £96.69 | 5 days |
|
| JBO-511821 | M18 | 2.5 | £104.48 | 5 days |
|
| JBO-516781 | M20 | 2.5 | £112.17 | 5 days |
|
| JBO-517151 | M1 | 0.25 | £206.18 | 5 days |
|
| JBO-517152 | M1.1 | 0.25 | £243.56 | 5 days |
|
| JBO-514484 | M1.2 | 0.25 | £168.78 | 5 days |
|
| JBO-514485 | M1.4 | 0.3 | £144.21 | 5 days |
|
| JBO-513913 | M1.6 | 0.35 | £130.33 | 5 days |
|
| JBO-517011 | M1.8 | 0.35 | £126.06 | 5 days |
|
| JBO-511867 | M2 | 0.4 | £105.65 | 5 days |
|
| JBO-514486 | M2.2 | 0.45 | £120.71 | 5 days |
|
| JBO-511888 | M2.5 | 0.45 | £94.22 | 5 days |
|
| JBO-512049 | M3 | 0.5 | £77.13 | 5 days |
|
| JBO-512066 | M3.5 | 0.6 | £81.40 | 5 days |
|
| JBO-512186 | M4 | 0.7 | £71.14 | 5 days |
|
| JBO-512204 | M4.5 | 0.75 | £100.62 | 5 days |
|
| JBO-512231 | M5 | 0.8 | £69.44 | 5 days |
|
| JBO-512268 | M6 | 1 | £67.42 | 5 days |
|
| JBO-512290 | M7 | 1 | £72.33 | 5 days |
|
| JBO-512318 | M8 | 1.25 | £69.44 | 5 days |
|
| JBO-512959 | M9 | 1.25 | £94.76 | 5 days |
|
| JBO-511654 | M10 | 1.5 | £74.67 | 5 days |
|
| JBO-514583 | M11 | 1.5 | £98.28 | 5 days |
|
| JBO-511697 | M12 | 1.75 | £79.81 | 5 days |
|
| JBO-511735 | M14 | 2 | £85.88 | 5 days |
|
| JBO-511784 | M16 | 2 | £91.87 | 5 days |
|
| JBO-511823 | M18 | 2.5 | £99.57 | 5 days |
|
| JBO-511908 | M20 | 2.5 | £106.82 | 5 days |
|
| JBO-511938 | M22 | 2.5 | £113.23 | 5 days |
|
| JBO-511969 | M24 | 3 | £127.12 | 5 days |
|
| JBO-512007 | M27 | 3 | £142.07 | 5 days |
|
| JBO-512077 | M30 | 3.5 | £157.04 | 5 days |
|
| JBO-514298 | M33 | 3.5 | £176.26 | 5 days |
|
| JBO-512146 | M36 | 4 | £189.08 | 5 days |
|
| JBO-514299 | M39 | 4 | £227.54 | 5 days |
|
| JBO-512232 | M5 | 0.8 | £79.27 | In Stock |
|
| JBO-512269 | M6 | 1 | £76.49 | 5 days |
|
| JBO-512319 | M8 | 1.25 | £79.27 | 5 days |
|
| JBO-511655 | M10 | 1.5 | £84.82 | 5 days |
|
| JBO-511698 | M12 | 1.75 | £92.29 | 5 days |
|
| JBO-514056 | M16 | 2 | £110.04 | 5 days |
|
| JBO-513902 | M20 | 2.5 | £139.94 | 5 days |
|
| JBO-516995 | M24 | 3 | £165.58 | 5 days |
|
| JBO-513995 | M30 | 3.5 | £204.04 | 5 days |
|
No products match your filters.
Fast dispatch, clear delivery options and a friendly technical team on the end of the phone.
Orders dispatched Monday to Friday between 8am and 5pm (4:30pm on Fridays).
| Service | Cost |
|---|---|
| Royal Mail Tracked 24 | £5.90 |
| DPD Standard Next Day | £8.00 |
| Royal Mail Special Delivery by 1pm | £12.50 |
| DPD Saturday Delivery | £25.00 |
Saturday delivery available on orders placed before 4pm Friday. T&Cs and geographical exclusions apply (Republic of Ireland, Northern Ireland, Scottish Highlands, Channel Islands & others) — see our delivery page for full details.
If an item isn't right, sending it back is simple and hassle-free.
Read our returns policy →Our specialist team can advise on tooling choice, specifications and compatibility.
01732 887334 info@protool-ltd.co.uk