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JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M2 x 0.4

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M2 x 0.4

SKU:JBO-502739
The JBO Thread Ring Gauge (NoGo) – Metric Coarse, Left Hand, 6g, M2 x 0.4 is a precision inspection tool designed to quickly verify external threads on small components. Built for engineers, mach... Read more ↓
Specifications at a glance
Thread FormMetric
SizeM2
Pitch0.4
Gauge TypeRing Gauge (NoGo)
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£127.21
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

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Description

The JBO Thread Ring Gauge (NoGo) – Metric Coarse, Left Hand, 6g, M2 x 0.4 is a precision inspection tool designed to quickly verify external threads on small components. Built for engineers, machinists, inspectors, and quality-conscious buyers, it provides a reliable go/no-go check that helps confirm parts meet their specified dimensions.

Made from hardened steel for durability and wear resistance, this gauge withstands daily use in busy workshops and QA labs, delivering consistent, repeatable results even in demanding environments.

  • Durable hardened steel construction: Built to withstand daily use in busy shops, delivering long-lasting reliability and consistent measurements.
  • Precise NoGo verification for metric coarse M2 x 0.4: Quickly checks external thread size to identify non-conforming parts and prevent incorrect assemblies.
  • Left-hand thread compatibility (6g, M2 x 0.4): Specifically engineered for left-hand external threads, reducing mix-ups and ensuring accurate gauge results in specialized applications.

This gauge helps streamline quality control workflows by delivering clear pass/fail results, reducing inspection time, and preventing mismatched components. The combination of robust steel construction and precise sizing gives teams confidence that every measurement aligns with the required standards, supporting reliable assemblies and consistent performance across batches.

Part Numbers

Protool Part Number
JBO-502739
Brand
JBO
Category
Gauge
No downloads are attached to this product yet.
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
Delivery

Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.

Returns

14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.

Technical Support

Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Trade Accounts

Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.

What time are Protool open?

We are open Monday to Friday between 8:30am and 5pm.

Do you offer Free Next Day delivery?

Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.

We also offer the following:

  • Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
  • DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
  • Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
  • DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.

For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.

*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: JBO Thread Ring Gauges (NoGo) - Metric Coarse

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You are viewing JBO-502739. Click any other SKU to view its full details.

Product SKUSizePitchPriceStock Order
JBO-500131 M10.25£135.97 5 days
JBO-500135 M1.10.25£176.54 5 days
JBO-500136 M1.20.25£128.29 5 days
JBO-500139 M1.40.3£114.03 5 days
JBO-500146 M1.60.35£99.02 5 days
JBO-500151 M1.70.35£120.61 5 days
JBO-500154 M1.80.35£88.27 5 days
JBO-500404 M20.4£83.67 5 days
JBO-500419 M2.20.45£93.31 5 days
JBO-500425 M2.30.4£154.62 5 days
JBO-500429 M2.50.45£67.67 5 days
JBO-500441 M2.60.45£83.11 5 days
JBO-500596 M30.5£52.09 5 days
JBO-500611 M3.50.6£54.82 5 days
JBO-500734 M40.7£47.70 5 days
JBO-500752 M4.50.75£74.13 5 days
JBO-500822 M50.8£47.70 5 days
JBO-500896 M61£47.70 5 days
JBO-500948 M71£54.51 5 days
JBO-500980 M81.25£48.81 5 days
JBO-501024 M91.25£65.13 5 days
JBO-500158 M101.5£54.51 5 days
JBO-500201 M111.5£76.53 5 days
JBO-500218 M121.75£60.74 5 days
JBO-500277 M142£64.91 5 days
JBO-500327 M162£74.24 5 days
JBO-500370 M182.5£87.84 5 days
JBO-500447 M202.5£94.96 5 days
JBO-500479 M222.5£106.80 5 days
JBO-500508 M243£111.84 5 days
JBO-500559 M273£128.29 5 days
JBO-500623 M303.5£135.97 5 days
JBO-500664 M333.5£154.62 5 days
JBO-500696 M364£163.39 5 days
JBO-500723 M394£179.84 5 days
JBO-500775 M424.5£186.41 5 days
JBO-500791 M454.5£198.46 5 days
JBO-500807 M485£209.44 5 days
JBO-500860 M525£250.01 5 days
JBO-500877 M565.5£239.05 5 days
JBO-500923 M605.5£321.28 5 days
JBO-500935 M646£339.93 5 days
JBO-500944 M686£362.95 5 days
JBO-500148 M1.60.35£117.33 5 days
JBO-500409 M20.4£95.95 5 days
JBO-500420 M2.20.45£107.24 5 days
JBO-500432 M2.50.45£76.44 5 days
JBO-500600 M30.5£58.90 5 days
JBO-500613 M3.50.6£59.98 5 days
JBO-500736 M40.7£53.62 5 days
JBO-500826 M50.8£53.62 5 days
JBO-500900 M61£53.62 5 days
JBO-500949 M71£62.72 5 days
JBO-500984 M81.25£54.94 5 days
JBO-502957 M91.25£82.24 5 days
JBO-500162 M101.5£63.50 5 days
JBO-500202 M111.5£96.40 5 days
JBO-500221 M121.75£70.29 5 days
JBO-500279 M142£77.97 5 days
JBO-500331 M162£83.67 5 days
JBO-500371 M182.5£97.16 5 days
JBO-500452 M202.5£107.15 5 days
JBO-500480 M222.5£129.40 5 days
JBO-500511 M243£137.06 5 days
JBO-500560 M273£154.62 5 days
JBO-500625 M303.5£168.86 5 days
JBO-505324 M333.5£187.50 5 days
JBO-540008 M364£199.57 5 days
JBO-540862 M394£216.02 5 days
JBO-500149 M1.60.35£124.99 5 days
JBO-500156 M1.80.35£124.99 5 days
JBO-500410 M20.4£105.26 5 days
JBO-506051 M2.20.45£117.33 5 days
JBO-500433 M2.50.45£82.80 5 days
JBO-500602 M30.5£63.83 5 days
JBO-500614 M3.50.6£66.02 5 days
JBO-500737 M40.7£58.90 5 days
JBO-500828 M50.8£58.90 5 days
JBO-500901 M61£58.90 5 days
JBO-500950 M71£68.54 5 days
JBO-500985 M81.25£60.43 5 days
JBO-504251 M91.25£82.24 5 days
JBO-500164 M101.5£69.51 5 days
JBO-500203 M111.5£96.40 5 days
JBO-500223 M121.75£77.19 5 days
JBO-500280 M142£82.45 5 days
JBO-500333 M162£91.67 5 days
JBO-500372 M182.5£106.25 5 days
JBO-500453 M202.5£117.33 5 days
JBO-500481 M222.5£129.40 5 days
JBO-500512 M243£137.06 5 days
JBO-500561 M273£154.62 5 days
JBO-500626 M303.5£168.86 5 days
JBO-503925 M333.5£183.12 5 days
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JBO-500899 M61£58.90 5 days
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JBO-501025 M91.25£82.24 5 days
JBO-500161 M101.5£69.51 5 days
JBO-503125 M111.5£96.40 5 days
JBO-500220 M121.75£77.19 5 days
JBO-503920 M142£82.45 5 days
JBO-500330 M162£91.67 5 days
JBO-503921 M182.5£106.25 5 days
JBO-500450 M202.5£117.33 5 days
JBO-503922 M222.5£131.59 5 days
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JBO-506047 M273£144.74 5 days
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JBO-500604 M30.5£63.83 5 days
JBO-500615 M3.50.6£66.02 5 days
JBO-500739 M40.7£58.90 5 days
JBO-500831 M50.8£58.90 5 days
JBO-500904 M61£58.90 5 days
JBO-500951 M71£68.54 5 days
JBO-500989 M81.25£60.43 5 days
JBO-502801 M91.25£82.24 5 days
JBO-500167 M101.5£69.51 5 days
JBO-503904 M111.5£96.40 5 days
JBO-500227 M121.75£77.19 5 days
JBO-500281 M142£94.09 5 days
JBO-500334 M162£91.67 5 days
JBO-500373 M182.5£106.25 5 days
JBO-500454 M202.5£117.33 5 days
JBO-503353 M222.5£129.40 5 days
JBO-500514 M243£137.06 5 days
JBO-500562 M273£154.62 5 days
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JBO-500665 M333.5£183.12 5 days
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JBO-502988 M394£230.28 5 days
JBO-503933 M424.5£250.01 5 days
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JBO-503726 M485£280.72 5 days
JBO-506064 M525£301.53 5 days
JBO-503918 M40.7£69.74 5 days
JBO-502955 M50.8£69.74 5 days
JBO-500905 M61£69.74 5 days
JBO-500990 M81.25£71.39 5 days
JBO-503094 M101.5£82.35 5 days
JBO-503760 M121.75£91.57 5 days
JBO-500335 M162£108.68 5 days
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