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JBO Thread Ring Gauge (GO) - Metric Coarse - Left Hand - 6e - M8 x 1.25
| Thread Form | Metric |
| Size | M8 |
| Pitch | 1.25 |
| Gauge Type | Ring Gauge (GO) |
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Description
The JBO Thread Ring Gauge (GO) for Metric Coarse threads is a precision inspection tool designed for left-hand thread applications. It specifically accommodates M8 x 1.25 with 6e tolerance, helping you verify external threads quickly and accurately during manufacture, assembly, and maintenance.
Built from hardened steel for durability in busy workshops, this GO gauge resists wear and holds its size under repeated use. Its simple, reliable design supports fast go/no-go checks, reducing inspection time and avoiding costly rework in quality control workflows.
- Left-Hand Metric Coarse GO Gauge for M8 x 1.25 (6e): Precisely matched to the M8 x 1.25 thread form with 6e tolerance for quick, accurate measurement of left-hand external threads.
- Hardened steel construction: Delivers long tool life and wear resistance in demanding QC environments, maintaining accuracy over many inspections.
- Fast, reliable go/no-go checks: User-friendly design enables instant pass/fail decisions, helping speed up quality control and reduce downtime.
By providing dependable, repeatable measurements, this gauge helps technicians ensure proper fit and function of metric coarse, left-handed threaded components. Its robust build and precise dimensions support consistent results across multiple parts and shifts, improving workflow, reducing rework, and increasing confidence in inspection outcomes.
Part Numbers
- Protool Part Number
- JBO-502309
- Brand
- JBO
- Category
- Gauge
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.
Full Range: JBO Thread Ring Gauges (GO) - Metric Coarse
View full collection →You are viewing JBO-502309. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-501426 | M1 | 0.25 | £135.97 | 5 days | |
| JBO-501430 | M1.1 | 0.25 | £176.54 | 5 days | |
| JBO-501431 | M1.2 | 0.25 | £128.29 | 5 days | |
| JBO-501434 | M1.4 | 0.3 | £114.03 | 5 days | |
| JBO-501441 | M1.6 | 0.35 | £99.02 | 5 days | |
| JBO-501446 | M1.7 | 0.35 | £120.61 | 5 days | |
| JBO-501448 | M1.8 | 0.35 | £88.27 | 5 days | |
| JBO-501700 | M2 | 0.4 | £83.67 | 5 days | |
| JBO-501714 | M2.2 | 0.45 | £93.31 | 5 days | |
| JBO-501720 | M2.3 | 0.4 | £154.62 | 5 days | |
| JBO-501724 | M2.5 | 0.45 | £67.67 | 5 days | |
| JBO-501739 | M2.6 | 0.45 | £83.11 | 5 days | |
| JBO-501903 | M3 | 0.5 | £52.09 | 5 days | |
| JBO-501919 | M3.5 | 0.6 | £54.82 | 5 days | |
| JBO-502047 | M4 | 0.7 | £47.70 | 5 days | |
| JBO-502069 | M4.5 | 0.75 | £74.13 | 5 days | |
| JBO-502138 | M5 | 0.8 | £47.70 | 5 days | |
| JBO-502214 | M6 | 1 | £47.70 | 5 days | |
| JBO-502271 | M7 | 1 | £54.51 | 5 days | |
| JBO-502301 | M8 | 1.25 | £48.81 | 5 days | |
| JBO-502347 | M9 | 1.25 | £65.13 | 5 days | |
| JBO-501452 | M10 | 1.5 | £54.51 | 5 days | |
| JBO-501492 | M11 | 1.5 | £76.53 | 5 days | |
| JBO-501512 | M12 | 1.75 | £60.74 | 5 days | |
| JBO-501572 | M14 | 2 | £64.91 | 5 days | |
| JBO-501623 | M16 | 2 | £74.24 | 5 days | |
| JBO-501663 | M18 | 2.5 | £87.84 | 5 days | |
| JBO-501748 | M20 | 2.5 | £94.96 | 5 days | |
| JBO-501782 | M22 | 2.5 | £106.80 | 5 days | |
| JBO-501815 | M24 | 3 | £111.84 | 5 days | |
| JBO-501868 | M27 | 3 | £128.29 | 5 days | |
| JBO-501929 | M30 | 3.5 | £135.97 | 5 days | |
| JBO-501975 | M33 | 3.5 | £154.62 | 5 days | |
| JBO-502011 | M36 | 4 | £163.39 | 5 days | |
| JBO-502039 | M39 | 4 | £179.84 | 5 days | |
| JBO-502093 | M42 | 4.5 | £186.41 | 5 days | |
| JBO-502108 | M45 | 4.5 | £198.46 | 5 days | |
| JBO-502125 | M48 | 5 | £209.44 | 5 days | |
| JBO-502176 | M52 | 5 | £250.01 | 5 days | |
| JBO-502199 | M56 | 5.5 | £239.05 | 5 days | |
| JBO-502244 | M60 | 5.5 | £321.28 | 5 days | |
| JBO-502257 | M64 | 6 | £339.93 | 5 days | |
| JBO-502267 | M68 | 6 | £362.95 | 5 days | |
| JBO-501443 | M1.6 | 0.35 | £117.33 | 5 days | |
| JBO-501704 | M2 | 0.4 | £95.95 | 5 days | |
| JBO-501715 | M2.2 | 0.45 | £107.24 | 5 days | |
| JBO-501728 | M2.5 | 0.45 | £76.44 | 5 days | |
| JBO-501906 | M3 | 0.5 | £58.90 | 5 days | |
| JBO-501921 | M3.5 | 0.6 | £59.98 | 5 days | |
| JBO-502051 | M4 | 0.7 | £53.62 | 5 days | |
| JBO-502143 | M5 | 0.8 | £53.62 | 5 days | |
| JBO-502218 | M6 | 1 | £53.62 | 5 days | |
| JBO-502272 | M7 | 1 | £62.72 | 5 days | |
| JBO-502305 | M8 | 1.25 | £54.94 | 5 days | |
| JBO-502956 | M9 | 1.25 | £82.24 | 5 days | |
| JBO-501456 | M10 | 1.5 | £63.50 | 5 days | |
| JBO-501494 | M11 | 1.5 | £96.40 | 5 days | |
| JBO-501517 | M12 | 1.75 | £70.29 | 5 days | |
| JBO-501574 | M14 | 2 | £77.97 | 5 days | |
| JBO-501626 | M16 | 2 | £83.67 | 5 days | |
| JBO-501664 | M18 | 2.5 | £97.16 | 5 days | |
| JBO-501751 | M20 | 2.5 | £107.15 | 5 days | |
| JBO-501783 | M22 | 2.5 | £129.40 | 5 days | |
| JBO-501817 | M24 | 3 | £137.06 | 5 days | |
| JBO-501869 | M27 | 3 | £154.62 | 5 days | |
| JBO-501931 | M30 | 3.5 | £168.86 | 5 days | |
| JBO-504575 | M33 | 3.5 | £187.50 | 5 days | |
| JBO-503038 | M36 | 4 | £199.57 | 5 days | |
| JBO-518837 | M39 | 4 | £216.02 | 5 days | |
| JBO-501444 | M1.6 | 0.35 | £124.99 | 5 days | |
| JBO-501450 | M1.8 | 0.35 | £124.99 | 5 days | |
| JBO-501705 | M2 | 0.4 | £105.26 | 5 days | |
| JBO-506050 | M2.2 | 0.45 | £117.33 | 5 days | |
| JBO-501908 | M3 | 0.5 | £63.83 | 5 days | |
| JBO-501923 | M3.5 | 0.6 | £66.02 | 5 days | |
| JBO-502052 | M4 | 0.7 | £58.90 | 5 days | |
| JBO-502145 | M5 | 0.8 | £58.90 | 5 days | |
| JBO-502220 | M6 | 1 | £58.90 | 5 days | |
| JBO-502273 | M7 | 1 | £68.54 | 5 days | |
| JBO-502306 | M8 | 1.25 | £60.43 | 5 days | |
| JBO-502349 | M9 | 1.25 | £82.24 | 5 days | |
| JBO-501457 | M10 | 1.5 | £69.51 | 5 days | |
| JBO-501495 | M11 | 1.5 | £96.40 | 5 days | |
| JBO-501518 | M12 | 1.75 | £77.19 | 5 days | |
| JBO-501575 | M14 | 2 | £82.45 | 5 days | |
| JBO-501627 | M16 | 2 | £91.67 | 5 days | |
| JBO-501665 | M18 | 2.5 | £106.25 | 5 days | |
| JBO-501752 | M20 | 2.5 | £117.33 | 5 days | |
| JBO-501784 | M22 | 2.5 | £129.40 | 5 days | |
| JBO-501818 | M24 | 3 | £137.06 | 5 days | |
| JBO-501870 | M27 | 3 | £154.62 | 5 days | |
| JBO-501932 | M30 | 3.5 | £168.86 | 5 days | |
| JBO-503924 | M33 | 3.5 | £183.12 | 5 days | |
| JBO-502012 | M36 | 4 | £199.57 | 5 days | |
| JBO-503893 | M39 | 4 | £216.02 | 5 days | |
| JBO-503932 | M42 | 4.5 | £285.10 | 5 days | |
| JBO-506059 | M45 | 4.5 | £301.53 | 5 days | |
| JBO-505775 | M48 | 5 | £321.28 | 5 days | |
| JBO-506060 | M52 | 5 | £343.21 | 5 days | |
| JBO-501427 | M1 | 0.25 | £509.89 | 5 days | |
| JBO-506034 | M1.1 | 0.25 | £649.14 | 5 days | |
| JBO-501432 | M1.2 | 0.25 | £467.11 | 5 days | |
| JBO-501435 | M1.4 | 0.3 | £144.74 | 5 days | |
| JBO-501442 | M1.6 | 0.35 | £124.99 | 5 days | |
| JBO-501449 | M1.8 | 0.35 | £111.84 | 5 days | |
| JBO-501702 | M2 | 0.4 | £105.26 | 5 days | |
| JBO-503906 | M2.2 | 0.45 | £117.33 | 5 days | |
| JBO-501729 | M2.5 | 0.45 | £82.80 | 5 days | |
| JBO-501905 | M3 | 0.5 | £63.83 | 5 days | |
| JBO-501920 | M3.5 | 0.6 | £66.02 | 5 days | |
| JBO-502049 | M4 | 0.7 | £58.90 | 5 days | |
| JBO-502141 | M5 | 0.8 | £58.90 | 5 days | |
| JBO-502217 | M6 | 1 | £58.90 | 5 days | |
| JBO-502915 | M7 | 1 | £68.54 | 5 days | |
| JBO-502304 | M8 | 1.25 | £60.43 | 5 days | |
| JBO-502348 | M9 | 1.25 | £82.24 | 5 days | |
| JBO-501455 | M10 | 1.5 | £69.51 | 5 days | |
| JBO-501493 | M11 | 1.5 | £96.40 | 5 days | |
| JBO-501515 | M12 | 1.75 | £77.19 | 5 days | |
| JBO-503905 | M14 | 2 | £82.45 | 5 days | |
| JBO-501625 | M16 | 2 | £91.67 | 5 days | |
| JBO-503907 | M18 | 2.5 | £106.25 | 5 days | |
| JBO-501750 | M20 | 2.5 | £117.33 | 5 days | |
| JBO-503879 | M22 | 2.5 | £131.59 | 5 days | |
| JBO-503588 | M24 | 3 | £137.06 | 5 days | |
| JBO-503908 | M27 | 3 | £144.74 | 5 days | |
| JBO-501930 | M30 | 3.5 | £172.16 | 5 days | |
| JBO-506038 | M1.4 | 0.3 | £163.39 | 5 days | |
| JBO-505880 | M1.6 | 0.35 | £141.45 | 5 days | |
| JBO-501707 | M2 | 0.4 | £127.21 | 5 days | |
| JBO-501730 | M2.5 | 0.45 | £94.73 | 5 days | |
| JBO-501910 | M3 | 0.5 | £63.83 | 5 days | |
| JBO-501924 | M3.5 | 0.6 | £66.02 | 5 days | |
| JBO-502053 | M4 | 0.7 | £58.90 | 5 days | |
| JBO-502147 | M5 | 0.8 | £58.90 | 5 days | |
| JBO-502222 | M6 | 1 | £58.90 | 5 days | |
| JBO-502274 | M7 | 1 | £68.54 | 5 days | |
| JBO-502308 | M8 | 1.25 | £60.43 | 5 days | |
| JBO-502800 | M9 | 1.25 | £82.24 | 5 days | |
| JBO-501459 | M10 | 1.5 | £69.51 | 5 days | |
| JBO-503911 | M11 | 1.5 | £96.40 | 5 days | |
| JBO-501520 | M12 | 1.75 | £77.19 | 5 days | |
| JBO-501576 | M14 | 2 | £94.09 | 5 days | |
| JBO-501628 | M16 | 2 | £91.67 | 5 days | |
| JBO-501666 | M18 | 2.5 | £106.25 | 5 days | |
| JBO-501753 | M20 | 2.5 | £117.33 | 5 days | |
| JBO-501786 | M22 | 2.5 | £129.40 | 5 days | |
| JBO-501819 | M24 | 3 | £137.06 | 5 days | |
| JBO-501871 | M27 | 3 | £154.62 | 5 days | |
| JBO-501933 | M30 | 3.5 | £168.86 | 5 days | |
| JBO-501976 | M33 | 3.5 | £183.12 | 5 days | |
| JBO-502013 | M36 | 4 | £199.57 | 5 days | |
| JBO-502987 | M39 | 4 | £230.28 | 5 days | |
| JBO-503533 | M42 | 4.5 | £250.01 | 5 days | |
| JBO-503327 | M45 | 4.5 | £264.27 | 5 days | |
| JBO-503534 | M48 | 5 | £280.72 | 5 days | |
| JBO-503535 | M52 | 5 | £301.53 | 5 days | |
| JBO-503914 | M4 | 0.7 | £69.74 | 5 days | |
| JBO-502954 | M5 | 0.8 | £69.74 | 5 days | |
| JBO-502224 | M6 | 1 | £69.74 | 5 days | |
| JBO-502309 Viewing | M8 | 1.25 | £71.39 | 5 days | |
| JBO-503093 | M10 | 1.5 | £82.35 | 5 days | |
| JBO-503759 | M12 | 1.75 | £91.57 | 5 days | |
| JBO-503643 | M16 | 2 | £108.68 | 5 days | |
| JBO-503915 | M20 | 2.5 | £137.06 | 5 days |
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