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JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M20 x 0.5
SKU:JBO-501754
The JBO Thread Ring Gauge (GO) is a precision inspection tool designed for quality teams, manufacturers, and engineers who work with metric fine external threads. Sized for right-hand M20 x 0.5 t...
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Specifications at a glance
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| Thread Form | Metric |
| Size | M20 |
| Pitch | 0.5 |
| Gauge Type | Ring Gauge (GO) |
£162.28
Prices shown ex. VAT
5 days estimated lead time
— subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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Description
The JBO Thread Ring Gauge (GO) is a precision inspection tool designed for quality teams, manufacturers, and engineers who work with metric fine external threads. Sized for right-hand M20 x 0.5 threads and built to the 6g class, it helps you quickly verify that components meet exact thread specifications and are ready for assembly.
Made from hardened steel, this GO ring gauge stands up to daily workshop use, resisting wear and maintaining accuracy over time. Its refined finish and stable dimensions ensure you can count on consistent results across batches, reducing rework and variation in your production line.
- Precise GO gauge for metric fine M20 x 0.5 threads: Quickly check external thread diameters against standard tolerances and ensure components fit as intended.
- Hardened steel construction: Delivers durable, wear-resistant performance for long service life in demanding environments.
- Easy-to-read, user-friendly design: Enables fast identification of conforming parts, speeding up quality control and inspection workflows.
This gauge helps streamline your inspection routine, delivering reliable, repeatable results that support tighter quality control, fewer rejects, and smoother assembly processes. Whether in a manufacturing line, workshop, or lab, you can trust the JBO Thread Ring Gauge (GO) to maintain accuracy for metric fine external threads and stand up to daily use.
Part Numbers
- Protool Part Number
- JBO-501754
- 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.
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
Full Range: JBO Thread Ring Gauges (GO) - Metric Fine
View full collection →You are viewing JBO-501754. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-502351 | M9 | 0.5 | £84.12 | 5 days | |
| JBO-502860 | M12 | 0.5 | £124.99 | 5 days | |
| JBO-501536 | M12 | 1 | £82.90 | 5 days | |
| JBO-502300 | M78 | 2 | £335.54 | 5 days | |
| JBO-501984 | M33 | 2 | £130.48 | 5 days | |
| JBO-502017 | M36 | 1.5 | £135.97 | 5 days | |
| JBO-502109 | M45 | 1 | £196.27 | 5 days | |
| JBO-501613 | M15 | 1 | £92.98 | 5 days | |
| JBO-501886 | M27 | 2 | £150.21 | 5 days | |
| JBO-502158 | M5 | 0.5 | £101.44 | 5 days | |
| JBO-503809 | M48 | 2 | £239.05 | 5 days | |
| JBO-501540 | M12 | 1.25 | £109.65 | 5 days | |
| JBO-502947 | M10 | 1.25 | £86.62 | 5 days | |
| JBO-501672 | M18 | 1 | £109.65 | 5 days | |
| JBO-501639 | M16 | 1 | £100.01 | 5 days | |
| JBO-501586 | M14 | 1 | £92.11 | 5 days | |
| JBO-501527 | M12 | 0.75 | £91.57 | 5 days | |
| JBO-505617 | M36 | 1 | £203.95 | 5 days | |
| JBO-501616 | M15 | 1 | £117.33 | 5 days | |
| JBO-501588 | M14 | 1 | £100.22 | 5 days | |
| JBO-501475 | M10 | 1 | £73.25 | 5 days | |
| JBO-502325 | M8 | 1 | £59.98 | 5 days | |
| JBO-502887 | M100 | 4 | £514.27 | 5 days | |
| JBO-503214 | M68 | 4 | £324.56 | 5 days | |
| JBO-502262 | M64 | 4 | £308.13 | 5 days | |
| JBO-520189 | M62 | 4 | £312.51 | 5 days | |
| JBO-502371 | M95 | 2 | £383.79 | 5 days | |
| JBO-502295 | M75 | 2 | £285.10 | 5 days | |
| JBO-502290 | M72 | 2 | £314.71 | 5 days | |
| JBO-502212 | M58 | 2 | £218.21 | 5 days | |
| JBO-502100 | M42 | 2 | £163.39 | 5 days | |
| JBO-501855 | M25 | 2 | £108.78 | 5 days | |
| JBO-501836 | M24 | 2 | £102.53 | 5 days | |
| JBO-502294 | M75 | 1.5 | £279.61 | 5 days | |
| JBO-502286 | M70 | 1.5 | £256.58 | 5 days | |
| JBO-502263 | M65 | 1.5 | £235.75 | 5 days | |
| JBO-502169 | M50 | 1.5 | £183.12 | 5 days | |
| JBO-502111 | M45 | 1.5 | £168.86 | 5 days | |
| JBO-501941 | M30 | 1.5 | £117.33 | 5 days | |
| JBO-501862 | M26 | 1.5 | £105.92 | 5 days | |
| JBO-501849 | M25 | 1.5 | £102.76 | 5 days | |
| JBO-501763 | M20 | 1.5 | £86.62 | 5 days | |
| JBO-501618 | M15 | 1.5 | £88.60 | 5 days | |
| JBO-501644 | M16 | 1.25 | £255.50 | 5 days | |
| JBO-501479 | M10 | 1.25 | £67.98 | 5 days | |
| JBO-501977 | M33 | 1 | £145.83 | 5 days | |
| JBO-501959 | M32 | 1 | £143.64 | 5 days | |
| JBO-501857 | M26 | 1 | £119.52 | 5 days | |
| JBO-501845 | M25 | 1 | £115.14 | 5 days | |
| JBO-501811 | M23 | 1 | £117.33 | 5 days | |
| JBO-501757 | M20 | 1 | £91.90 | 5 days | |
| JBO-501670 | M18 | 1 | £85.65 | 5 days | |
| JBO-501561 | M13 | 1 | £88.27 | 5 days | |
| JBO-502322 | M8 | 1 | £51.88 | 5 days | |
| JBO-501888 | M28 | 0.75 | £164.47 | 5 days | |
| JBO-502075 | M4.5 | 0.5 | £93.76 | 5 days | |
| JBO-503830 | M52 | 3 | £276.31 | 5 days | |
| JBO-503406 | M48 | 3 | £246.71 | 5 days | |
| JBO-506310 | M45 | 3 | £241.24 | 5 days | |
| JBO-504029 | M42 | 3 | £223.68 | 5 days | |
| JBO-505621 | M39 | 3 | £209.44 | 5 days | |
| JBO-502974 | M36 | 3 | £199.57 | 5 days | |
| JBO-506309 | M33 | 3 | £203.95 | 5 days | |
| JBO-506308 | M30 | 3 | £186.41 | 5 days | |
| JBO-505669 | M85 | 2 | £432.04 | 5 days | |
| JBO-543164 | M82 | 2 | £458.34 | 5 days | |
| JBO-505668 | M80 | 2 | £411.20 | 5 days | |
| JBO-547291 | M78 | 2 | £445.19 | 5 days | |
| JBO-504365 | M76 | 2 | £429.85 | 5 days | |
| JBO-505661 | M75 | 2 | £369.53 | 5 days | |
| JBO-503748 | M72 | 2 | £416.67 | 5 days | |
| JBO-505794 | M70 | 2 | £339.93 | 5 days | |
| JBO-505723 | M68 | 2 | £339.93 | 5 days | |
| JBO-503769 | M65 | 2 | £327.86 | 5 days | |
| JBO-505654 | M64 | 2 | £311.41 | 5 days | |
| JBO-506524 | M62 | 2 | £310.32 | 5 days | |
| JBO-502250 | M60 | 2 | £285.10 | 5 days | |
| JBO-505646 | M58 | 2 | £301.53 | 5 days | |
| JBO-502206 | M56 | 2 | £274.12 | 5 days | |
| JBO-505644 | M55 | 2 | £268.65 | 5 days | |
| JBO-502184 | M52 | 2 | £259.88 | 5 days | |
| JBO-505637 | M50 | 2 | £241.24 | 5 days | |
| JBO-505630 | M48 | 2 | £233.56 | 5 days | |
| JBO-502118 | M45 | 2 | £228.09 | 5 days | |
| JBO-504059 | M42 | 2 | £209.44 | 5 days | |
| JBO-505625 | M40 | 2 | £211.63 | 5 days | |
| JBO-505620 | M39 | 2 | £202.87 | 5 days | |
| JBO-505618 | M38 | 2 | £199.57 | 5 days | |
| JBO-502026 | M36 | 2 | £176.54 | 5 days | |
| JBO-503083 | M33 | 2 | £168.86 | 5 days | |
| JBO-503328 | M32 | 2 | £172.16 | 5 days | |
| JBO-501951 | M30 | 2 | £154.62 | 5 days | |
| JBO-506523 | M28 | 2 | £164.47 | 5 days | |
| JBO-506522 | M26 | 2 | £155.70 | 5 days | |
| JBO-506521 | M25 | 2 | £150.21 | 5 days | |
| JBO-501840 | M24 | 2 | £130.48 | 5 days | |
| JBO-504058 | M22 | 2 | £129.40 | 5 days | |
| JBO-501773 | M20 | 2 | £121.72 | 5 days | |
| JBO-505597 | M18 | 2 | £123.91 | 5 days | |
| JBO-503992 | M85 | 1.5 | £432.04 | 5 days | |
| JBO-506227 | M82 | 1.5 | £411.20 | 5 days | |
| JBO-506226 | M80 | 1.5 | £390.37 | 5 days | |
| JBO-505906 | M78 | 1.5 | £389.26 | 5 days | |
| JBO-503991 | M75 | 1.5 | £359.66 | 5 days | |
| JBO-503990 | M72 | 1.5 | £339.93 | 5 days | |
| JBO-506225 | M70 | 1.5 | £338.82 | 5 days | |
| JBO-506224 | M68 | 1.5 | £313.60 | 5 days | |
| JBO-503989 | M65 | 1.5 | £312.51 | 5 days | |
| JBO-503468 | M64 | 1.5 | £308.13 | 5 days | |
| JBO-506223 | M62 | 1.5 | £298.26 | 5 days | |
| JBO-503005 | M60 | 1.5 | £279.61 | 5 days | |
| JBO-503988 | M58 | 1.5 | £277.42 | 5 days | |
| JBO-502204 | M56 | 1.5 | £264.27 | 5 days | |
| JBO-503500 | M55 | 1.5 | £257.69 | 5 days | |
| JBO-503464 | M52 | 1.5 | £241.24 | 5 days | |
| JBO-502172 | M50 | 1.5 | £232.47 | 5 days | |
| JBO-502132 | M48 | 1.5 | £228.09 | 5 days | |
| JBO-502115 | M45 | 1.5 | £211.63 | 5 days | |
| JBO-502099 | M42 | 1.5 | £201.76 | 5 days | |
| JBO-502085 | M40 | 1.5 | £189.69 | 5 days | |
| JBO-502044 | M39 | 1.5 | £209.44 | 5 days | |
| JBO-502037 | M38 | 1.5 | £183.12 | 5 days | |
| JBO-502022 | M36 | 1.5 | £173.24 | 5 days | |
| JBO-502006 | M35 | 1.5 | £172.16 | 5 days | |
| JBO-501995 | M34 | 1.5 | £175.43 | 5 days | |
| JBO-501983 | M33 | 1.5 | £169.96 | 5 days | |
| JBO-501970 | M32 | 1.5 | £161.19 | 5 days | |
| JBO-501946 | M30 | 1.5 | £149.13 | 5 days | |
| JBO-501897 | M28 | 1.5 | £143.64 | 5 days | |
| JBO-501883 | M27 | 1.5 | £141.45 | 5 days | |
| JBO-501866 | M26 | 1.5 | £134.87 | 5 days | |
| JBO-501853 | M25 | 1.5 | £131.59 | 5 days | |
| JBO-501835 | M24 | 1.5 | £124.99 | 5 days | |
| JBO-501802 | M22 | 1.5 | £117.33 | 5 days | |
| JBO-501769 | M20 | 1.5 | £109.65 | 5 days | |
| JBO-501685 | M18 | 1.5 | £99.68 | 5 days | |
| JBO-503768 | M17 | 1.5 | £143.64 | 5 days | |
| JBO-505592 | M16 | 1.5 | £92.23 | 5 days | |
| JBO-503757 | M15 | 1.5 | £111.84 | 5 days | |
| JBO-501602 | M14 | 1.5 | £84.33 | 5 days | |
| JBO-501549 | M12 | 1.5 | £86.52 | 5 days | |
| JBO-503438 | M14 | 1.25 | £121.72 | 5 days | |
| JBO-501543 | M12 | 1.25 | £109.65 | 5 days | |
| JBO-501484 | M10 | 1.25 | £89.47 | 5 days | |
| JBO-506125 | M60 | 1 | £337.73 | 5 days | |
| JBO-506123 | M58 | 1 | £327.86 | 5 days | |
| JBO-506121 | M56 | 1 | £312.51 | 5 days | |
| JBO-506119 | M55 | 1 | £301.53 | 5 days | |
| JBO-503952 | M52 | 1 | £285.10 | 5 days | |
| JBO-505636 | M50 | 1 | £294.96 | 5 days | |
| JBO-506116 | M48 | 1 | £265.35 | 5 days | |
| JBO-503256 | M45 | 1 | £250.01 | 5 days | |
| JBO-502995 | M42 | 1 | £234.66 | 5 days | |
| JBO-503267 | M40 | 1 | £229.17 | 5 days | |
| JBO-502032 | M38 | 1 | £210.53 | 5 days | |
| JBO-503047 | M36 | 1 | £203.95 | 5 days | |
| JBO-502002 | M35 | 1 | £197.38 | 5 days | |
| JBO-502838 | M34 | 1 | £198.46 | 5 days | |
| JBO-502990 | M33 | 1 | £187.50 | 5 days | |
| JBO-501963 | M32 | 1 | £183.12 | 5 days | |
| JBO-501939 | M30 | 1 | £162.28 | 5 days | |
| JBO-501893 | M28 | 1 | £163.39 | 5 days | |
| JBO-501878 | M27 | 1 | £162.28 | 5 days | |
| JBO-501860 | M26 | 1 | £153.51 | 5 days | |
| JBO-503313 | M25 | 1 | £148.02 | 5 days | |
| JBO-501828 | M24 | 1 | £139.25 | 5 days | |
| JBO-506139 | M23 | 1 | £155.70 | 5 days | |
| JBO-501794 | M22 | 1 | £133.78 | 5 days | |
| JBO-506137 | M21 | 1 | £148.02 | 5 days | |
| JBO-501761 | M20 | 1 | £116.23 | 5 days | |
| JBO-501697 | M19 | 1 | £135.97 | 5 days | |
| JBO-501675 | M18 | 1 | £109.65 | 5 days | |
| JBO-501660 | M17 | 1 | £119.52 | 5 days | |
| JBO-501643 | M16 | 1 | £97.93 | 5 days | |
| JBO-501617 | M15 | 1 | £119.52 | 5 days | |
| JBO-501589 | M14 | 1 | £90.25 | 5 days | |
| JBO-501564 | M13 | 1 | £111.84 | 5 days | |
| JBO-501537 | M12 | 1 | £83.77 | 5 days | |
| JBO-502747 | M11 | 1 | £91.90 | 5 days | |
| JBO-501477 | M10 | 1 | £73.91 | 5 days | |
| JBO-502360 | M9 | 1 | £81.15 | 5 days | |
| JBO-502327 | M8 | 1 | £66.02 | 5 days | |
| JBO-505902 | M28 | 0.75 | £208.34 | 5 days | |
| JBO-505610 | M27 | 0.75 | £197.38 | 5 days | |
| JBO-505970 | M26 | 0.75 | £196.27 | 5 days | |
| JBO-501844 | M25 | 0.75 | £178.73 | 5 days | |
| JBO-503587 | M24 | 0.75 | £164.47 | 5 days | |
| JBO-503102 | M23 | 0.75 | £180.92 | 5 days | |
| JBO-506134 | M22 | 0.75 | £160.09 | 5 days | |
| JBO-503954 | M21 | 0.75 | £169.96 | 5 days | |
| JBO-502787 | M20 | 0.75 | £133.78 | 5 days | |
| JBO-501693 | M19 | 0.75 | £160.09 | 5 days | |
| JBO-503241 | M18 | 0.75 | £126.10 | 5 days | |
| JBO-506079 | M17 | 0.75 | £148.02 | 5 days | |
| JBO-501636 | M16 | 0.75 | £117.33 | 5 days | |
| JBO-503399 | M15 | 0.75 | £127.21 | 5 days | |
| JBO-501584 | M14 | 0.75 | £101.54 | 5 days | |
| JBO-506078 | M13 | 0.75 | £117.33 | 5 days | |
| JBO-501530 | M12 | 0.75 | £92.01 | 5 days | |
| JBO-501503 | M11 | 0.75 | £103.29 | 5 days | |
| JBO-501468 | M10 | 0.75 | £83.46 | 5 days | |
| JBO-502783 | M9 | 0.75 | £90.25 | 5 days | |
| JBO-502321 | M8 | 0.75 | £75.00 | 5 days | |
| JBO-502283 | M7 | 0.75 | £88.06 | 5 days | |
| JBO-502239 | M6 | 0.75 | £73.68 | 5 days | |
| JBO-503264 | M5 | 0.75 | £95.08 | 5 days | |
| JBO-503940 | M18 | 0.5 | £199.57 | 5 days | |
| JBO-506075 | M17 | 0.5 | £189.69 | 5 days | |
| JBO-503939 | M16 | 0.5 | £164.47 | 5 days | |
| JBO-503938 | M15 | 0.5 | £167.77 | 5 days | |
| JBO-506074 | M14 | 0.5 | £151.32 | 5 days | |
| JBO-506073 | M13 | 0.5 | £153.51 | 5 days | |
| JBO-503937 | M12 | 0.5 | £139.25 | 5 days | |
| JBO-506072 | M11 | 0.5 | £142.55 | 5 days | |
| JBO-501464 | M10 | 0.5 | £121.72 | 5 days | |
| JBO-503936 | M9 | 0.5 | £114.03 | 5 days | |
| JBO-502316 | M8 | 0.5 | £110.75 | 5 days | |
| JBO-503935 | M7 | 0.5 | £104.82 | 5 days | |
| JBO-502232 | M6 | 0.5 | £105.48 | 5 days | |
| JBO-503934 | M4.5 | 0.5 | £114.03 | 5 days | |
| JBO-502067 | M4 | 0.5 | £101.44 | 5 days | |
| JBO-503683 | M4 | 0.35 | £101.54 | 5 days | |
| JBO-503655 | M3.5 | 0.35 | £104.95 | 5 days | |
| JBO-501916 | M3 | 0.35 | £112.95 | 5 days | |
| JBO-506554 | M70 | 2 | £339.93 | 5 days | |
| JBO-506553 | M68 | 2 | £339.93 | 5 days | |
| JBO-506552 | M65 | 2 | £315.79 | 5 days | |
| JBO-502260 | M64 | 2 | £321.28 | 5 days | |
| JBO-506551 | M62 | 2 | £301.53 | 5 days | |
| JBO-505651 | M60 | 2 | £285.10 | 5 days | |
| JBO-506550 | M58 | 2 | £301.53 | 5 days | |
| JBO-502896 | M56 | 2 | £280.72 | 5 days | |
| JBO-502197 | M55 | 2 | £268.65 | 5 days | |
| JBO-502183 | M52 | 2 | £252.20 | 5 days | |
| JBO-506549 | M50 | 2 | £260.97 | 5 days | |
| JBO-505628 | M45 | 2 | £228.09 | 5 days | |
| JBO-502101 | M42 | 2 | £214.91 | 5 days | |
| JBO-506548 | M40 | 2 | £222.60 | 5 days | |
| JBO-504067 | M39 | 2 | £202.87 | 5 days | |
| JBO-506547 | M38 | 2 | £209.44 | 5 days | |
| JBO-504066 | M36 | 2 | £184.22 | 5 days | |
| JBO-501985 | M33 | 2 | £173.24 | 5 days | |
| JBO-506546 | M32 | 2 | £178.73 | 5 days | |
| JBO-501948 | M30 | 2 | £159.00 | 5 days | |
| JBO-506545 | M28 | 2 | £164.47 | 5 days | |
| JBO-503639 | M27 | 2 | £150.21 | 5 days | |
| JBO-506544 | M26 | 2 | £148.02 | 5 days | |
| JBO-506543 | M25 | 2 | £143.64 | 5 days | |
| JBO-501837 | M24 | 2 | £134.87 | 5 days | |
| JBO-501804 | M22 | 2 | £129.40 | 5 days |
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