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Asimeto Ring Thread Gauge (NoGo) - Metric - Right Hand - 6g - M50 x 1
SKU:686-50-3
Precision in every turn—that's what the Asimeto Ring Thread Gauge (NoGo) delivers for metric fastener work. Designed for machinists, quality control technicians, and fastener manufacturers, this ...
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Specification
| Thread Form | Metric |
| Size | M50 |
| Pitch | 1 |
| Gauge Type | Ring Gauge (NoGo) |
| Thread Direction | Right Hand |
| Tolerance | 6g |
£138.26
Prices shown ex. VAT
4 weeks 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.
Learn more about Klarna
Learn more about Klarna
Precision in every turn—that's what the Asimeto Ring Thread Gauge (NoGo) delivers for metric fastener work. Designed for machinists, quality control technicians, and fastener manufacturers, this NoGo gauge checks M50 x 1 right-hand threads against the 6g tolerance class to ensure the thread pitch diameter is correct and ready for reliable connections.
- 6g tolerance class: precise measurement of the thread pitch diameter for metric threads.
- NoGo designation: quickly reveals threads that are too large or out of tolerance, preventing improper assemblies.
- Metric size: M50 x 1 right-hand thread, aligned with standard metric fastener specifications.
- Right-hand orientation: suitable for the common threading used in most fastener applications.
- 686 Series craftsmanship: built for precision and long-lasting performance in demanding environments.
- High-quality materials: designed to endure frequent use and calibration without compromising accuracy.
In practice, the gauge helps you confirm that only properly sized fasteners are brought into service, reducing rework and assembly issues. Use it in quality control workflows to quickly pass parts that meet the 6g pitch-diameter standard and reject those that exceed it. Its sturdy construction supports daily use in workshops, manufacturing lines, and maintenance shops, giving you a dependable tool for consistent thread measurements.
| Thread Form | Metric |
| Size | M50 |
| Pitch | 1 |
| Gauge Type | Ring Gauge (NoGo) |
| Thread Direction | Right Hand |
| Tolerance | 6g |
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.
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honest about stock and prices are competitive.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Full Range: Asimeto Ring Gauges - NOGO - Metric Fine 6g - 686 Series
View full collection →You are viewing 686-50-3. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| 686-02-0 | M2 | 0.35 | £56.04 | In Stock | |
| 686-02-8 | M2.2 | 0.35 | £65.62 | In Stock | |
| 686-02-9 | M2.5 | 0.35 | £65.62 | In Stock | |
| 686-03-0 | M3 | 0.35 | £52.72 | In Stock | |
| 686-03-9 | M3.5 | 0.35 | £57.89 | In Stock | |
| 686-04-0 | M4 | 0.35 | £52.72 | In Stock | |
| 686-04-9 | M4.5 | 0.35 | £57.89 | In Stock | |
| 686-05-0 | M5 | 0.35 | £52.72 | In Stock | |
| 686-06-0 | M6 | 0.35 | £52.72 | In Stock | |
| 686-04-1 | M4 | 0.5 | £43.87 | In Stock | |
| 686-05-1 | M5 | 0.5 | £43.87 | In Stock | |
| 686-06-1 | M6 | 0.5 | £43.87 | In Stock | |
| 686-08-1 | M8 | 0.5 | £43.87 | In Stock | |
| 686-10-1 | M10 | 0.5 | £50.14 | In Stock | |
| 686-12-1 | M12 | 0.5 | £50.14 | In Stock | |
| 686-06-2 | M6 | 0.75 | £37.98 | In Stock | |
| 686-07-2 | M7 | 0.75 | £37.98 | In Stock | |
| 686-08-2 | M8 | 0.75 | £43.14 | In Stock | |
| 686-10-2 | M10 | 0.75 | £43.14 | In Stock | |
| 686-12-2 | M12 | 0.75 | £48.30 | In Stock | |
| 686-08-3 | M8 | 1 | £38.71 | In Stock | |
| 686-09-3 | M9 | 1 | £38.71 | 4 weeks | |
| 686-10-3 | M10 | 1 | £38.71 | 4 weeks | |
| 686-11-3 | M11 | 1 | £38.71 | In Stock | |
| 686-12-3 | M12 | 1 | £38.71 | In Stock | |
| 686-14-3 | M14 | 1 | £55.30 | In Stock | |
| 686-16-3 | M16 | 1 | £55.30 | 4 weeks | |
| 686-18-3 | M18 | 1 | £60.46 | 4 weeks | |
| 686-20-3 | M20 | 1 | £60.46 | 4 weeks | |
| 686-21-3 | M21 | 1 | £67.47 | In Stock | |
| 686-22-3 | M22 | 1 | £72.63 | In Stock | |
| 686-23-3 | M23 | 1 | £77.42 | In Stock | |
| 686-24-3 | M24 | 1 | £72.63 | In Stock | |
| 686-25-3 | M25 | 1 | £82.58 | 4 weeks | |
| 686-26-3 | M26 | 1 | £82.58 | In Stock | |
| 686-27-3 | M27 | 1 | £82.58 | In Stock | |
| 686-28-3 | M28 | 1 | £82.58 | In Stock | |
| 686-30-3 | M30 | 1 | £93.28 | 4 weeks | |
| 686-32-3 | M32 | 1 | £93.28 | In Stock | |
| 686-33-3 | M33 | 1 | £94.75 | In Stock | |
| 686-34-3 | M34 | 1 | £94.75 | In Stock | |
| 686-35-3 | M35 | 1 | £94.75 | In Stock | |
| 686-36-3 | M36 | 1 | £94.75 | In Stock | |
| 686-38-3 | M38 | 1 | £106.18 | 4 weeks | |
| 686-39-3 | M39 | 1 | £114.30 | 4 weeks | |
| 686-40-3 | M40 | 1 | £112.46 | In Stock | |
| 686-42-3 | M42 | 1 | £119.82 | 4 weeks | |
| 686-45-3 | M45 | 1 | £145.63 | 4 weeks | |
| 686-48-3 | M48 | 1 | £140.10 | 4 weeks | |
| 686-50-3 Viewing | M50 | 1 | £138.26 | 4 weeks | |
| 686-52-3 | M52 | 1 | £147.85 | 4 weeks | |
| 686-55-3 | M55 | 1 | £176.98 | 4 weeks | |
| 686-56-3 | M56 | 1 | £167.76 | 4 weeks | |
| 686-58-3 | M58 | 1 | £167.76 | 4 weeks | |
| 686-10-4 | M10 | 1.25 | £38.71 | In Stock | |
| 686-12-4 | M12 | 1.25 | £38.71 | In Stock | |
| 686-14-4 | M14 | 1.25 | £47.56 | In Stock | |
| 686-12-5 | M12 | 1.5 | £38.71 | In Stock | |
| 686-14-5 | M14 | 1.5 | £48.66 | In Stock | |
| 686-16-5 | M16 | 1.5 | £52.72 | In Stock | |
| 686-18-5 | M18 | 1.5 | £54.20 | In Stock | |
| 686-20-5 | M20 | 1.5 | £59.73 | 4 weeks | |
| 686-22-5 | M22 | 1.5 | £63.78 | In Stock | |
| 686-24-5 | M24 | 1.5 | £63.78 | In Stock | |
| 686-25-5 | M25 | 1.5 | £63.78 | In Stock | |
| 686-26-5 | M26 | 1.5 | £63.78 | 4 weeks | |
| 686-27-5 | M27 | 1.5 | £63.78 | In Stock | |
| 686-28-5 | M28 | 1.5 | £79.64 | In Stock | |
| 686-30-5 | M30 | 1.5 | £85.17 | 4 weeks | |
| 686-32-5 | M32 | 1.5 | £85.17 | In Stock | |
| 686-33-5 | M33 | 1.5 | £86.64 | 4 weeks | |
| 686-34-5 | M34 | 1.5 | £90.33 | In Stock | |
| 686-35-5 | M35 | 1.5 | £103.98 | 4 weeks | |
| 686-36-5 | M36 | 1.5 | £98.44 | In Stock | |
| 686-38-5 | M38 | 1.5 | £98.44 | In Stock | |
| 686-40-5 | M40 | 1.5 | £125.73 | 4 weeks | |
| 686-42-5 | M42 | 1.5 | £128.67 | In Stock | |
| 686-45-5 | M45 | 1.5 | £128.67 | 4 weeks | |
| 686-48-5 | M48 | 1.5 | £128.67 | 4 weeks | |
| 686-50-5 | M50 | 1.5 | £139.37 | In Stock | |
| 686-52-5 | M52 | 1.5 | £136.05 | 4 weeks | |
| 686-55-5 | M55 | 1.5 | £149.69 | In Stock | |
| 686-56-5 | M56 | 1.5 | £149.69 | In Stock | |
| 686-58-5 | M60 | 1.5 | £149.69 | In Stock | |
| 686-60-5 | M60 | 1.5 | £165.18 | In Stock | |
| 686-18-6 | M18 | 2 | £57.14 | In Stock | |
| 686-20-6 | M20 | 2 | £57.14 | In Stock | |
| 686-22-6 | M22 | 2 | £63.42 | In Stock | |
| 686-24-6 | M24 | 2 | £61.20 | In Stock | |
| 686-26-6 | M26 | 2 | £63.78 | In Stock | |
| 686-27-6 | M27 | 2 | £63.78 | In Stock | |
| 686-28-6 | M28 | 2 | £63.78 | In Stock | |
| 686-30-6 | M30 | 2 | £77.42 | In Stock | |
| 686-32-6 | M32 | 2 | £77.42 | In Stock | |
| 686-33-6 | M33 | 2 | £79.27 | In Stock | |
| 686-34-6 | M34 | 2 | £79.27 | In Stock | |
| 686-35-6 | M35 | 2 | £88.86 | In Stock | |
| 686-36-6 | M36 | 2 | £88.86 | In Stock | |
| 686-38-6 | M38 | 2 | £88.86 | 4 weeks | |
| 686-39-6 | M39 | 2 | £88.86 | In Stock | |
| 686-40-6 | M40 | 2 | £88.86 | In Stock | |
| 686-42-6 | M42 | 2 | £122.41 | In Stock | |
| 686-45-6 | M45 | 2 | £122.41 | In Stock | |
| 686-48-6 | M48 | 2 | £138.26 | 4 weeks | |
| 686-50-6 | M50 | 2 | £138.26 | 4 weeks | |
| 686-52-6 | M52 | 2 | £135.68 | In Stock | |
| 686-55-6 | M55 | 2 | £147.11 | 4 weeks | |
| 686-56-6 | M56 | 2 | £134.94 | 4 weeks | |
| 686-58-6 | M58 | 2 | £134.94 | In Stock | |
| 686-60-6 | M60 | 2 | £151.90 | 4 weeks | |
| 686-30-7 | M30 | 3 | £84.80 | In Stock | |
| 686-33-7 | M33 | 3 | £86.64 | 4 weeks | |
| 686-36-7 | M36 | 3 | £91.06 | In Stock | |
| 686-39-7 | M39 | 3 | £91.06 | In Stock | |
| 686-40-7 | M40 | 3 | £92.91 | In Stock | |
| 686-42-7 | M42 | 3 | £127.57 | In Stock | |
| 686-45-7 | M45 | 3 | £127.57 | 4 weeks | |
| 686-48-7 | M48 | 3 | £127.57 | 4 weeks | |
| 686-50-7 | M50 | 3 | £127.57 | In Stock | |
| 686-52-7 | M52 | 3 | £125.36 | 4 weeks | |
| 686-55-7 | M55 | 3 | £140.84 | 4 weeks | |
| 686-56-7 | M56 | 3 | £133.84 | 4 weeks | |
| 686-58-7 | M58 | 3 | £151.54 | 4 weeks | |
| 686-60-7 | M60 | 3 | £155.96 | 4 weeks |
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