Please log in here to access all benefits, including promotional discounts and faster checkouts.
Asimeto Ring Thread Gauge (Go) - Metric - Right Hand - 6g - M20 x 2
| Thread Form | Metric |
| Size | M20 |
| Pitch | 2 |
| Gauge Type | Ring Gauge (GO) |
Learn more about Klarna
Compatible certification
The ones our customers buy most.
Description
The Asimeto Ring Thread Gauge GO is a precision metric ring gauge designed for technicians and quality-control teams who need quick, reliable validation of M20 x 2 right-hand threads. Part of the 685 Series, this tool delivers consistent go gauge checks in demanding manufacturing environments.
- Type: GO ring gauge for metric fine threads
- Thread class: Metric fine 6g precision
- Size: M20 x 2, right-hand thread
- Material: High-quality steel for durability and long tool life
- Finish: Precision-machined with a knurled outer edge for secure handling
- Series: 685 Series GO gauge
- Applications: Ideal for automotive, aerospace, and general engineering quality control
By providing a fast pass/fail assessment, the GO gauge helps inspectors confirm that components meet exact thread dimensions before assembly. Its steel construction resists wear in busy shops, while the knurled edge improves grip during quick insertions, reducing setup time and the risk of misreads. With consistent results across high-volume production, it supports higher first-pass yields and tighter tolerances in critical threaded connections.
Part Numbers
- Protool Part Number
- 685-20-6
- Brand
- Asimeto
- 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: Asimeto Ring Gauges - GO - Metric Fine 6g - 685 Series
View full collection →You are viewing 685-20-6. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| 685-02-0 | M2 | 0.35 | £57.92 | In Stock | |
| 685-02-8 | M2.2 | 0.35 | £57.92 | In Stock | |
| 685-02-9 | M2.5 | 0.35 | £57.92 | In Stock | |
| 685-03-0 | M3 | 0.35 | £57.92 | In Stock | |
| 685-03-9 | M3.5 | 0.35 | £57.92 | In Stock | |
| 685-04-0 | M4 | 0.35 | £57.92 | In Stock | |
| 685-04-9 | M4.5 | 0.35 | £57.92 | In Stock | |
| 685-05-0 | M5 | 0.35 | £57.92 | In Stock | |
| 685-06-0 | M6 | 0.35 | £57.92 | In Stock | |
| 685-04-1 | M4 | 0.5 | £53.24 | In Stock | |
| 685-05-1 | M5 | 0.5 | £53.24 | In Stock | |
| 685-06-1 | M6 | 0.5 | £53.24 | In Stock | |
| 685-08-1 | M8 | 0.5 | £53.24 | In Stock | |
| 685-10-1 | M10 | 0.5 | £57.92 | In Stock | |
| 685-12-1 | M12 | 0.5 | £64.58 | In Stock | |
| 685-06-2 | M6 | 0.75 | £44.60 | In Stock | |
| 685-07-2 | M7 | 0.75 | £44.60 | 4 weeks | |
| 685-08-2 | M8 | 0.75 | £49.68 | In Stock | |
| 685-10-2 | M10 | 0.75 | £53.24 | In Stock | |
| 685-12-2 | M12 | 0.75 | £69.66 | In Stock | |
| 685-08-3 | M8 | 1 | £44.60 | 4 weeks | |
| 685-09-3 | M9 | 1 | £44.60 | 4 weeks | |
| 685-10-3 | M10 | 1 | £44.60 | 4 weeks | |
| 685-11-3 | M11 | 1 | £47.75 | In Stock | |
| 685-12-3 | M12 | 1 | £48.51 | 4 weeks | |
| 685-14-3 | M14 | 1 | £64.94 | In Stock | |
| 685-16-3 | M16 | 1 | £58.68 | 4 weeks | |
| 685-18-3 | M18 | 1 | £59.85 | 4 weeks | |
| 685-20-3 | M20 | 1 | £68.49 | 4 weeks | |
| 685-21-3 | M21 | 1 | £79.83 | 4 weeks | |
| 685-22-3 | M22 | 1 | £72.00 | 4 weeks | |
| 685-23-3 | M23 | 1 | £87.26 | 4 weeks | |
| 685-24-3 | M24 | 1 | £87.26 | 4 weeks | |
| 685-25-3 | M25 | 1 | £78.66 | 4 weeks | |
| 685-26-3 | M26 | 1 | £87.26 | 4 weeks | |
| 685-27-3 | M27 | 1 | £78.66 | In Stock | |
| 685-28-3 | M28 | 1 | £78.66 | In Stock | |
| 685-30-3 | M30 | 1 | £108.77 | In Stock | |
| 685-32-3 | M32 | 1 | £120.51 | In Stock | |
| 685-33-3 | M33 | 1 | £122.49 | 4 weeks | |
| 685-34-3 | M34 | 1 | £122.49 | In Stock | |
| 685-35-3 | M35 | 1 | £122.49 | In Stock | |
| 685-36-3 | M36 | 1 | £139.68 | 4 weeks | |
| 685-38-3 | M38 | 1 | £139.68 | In Stock | |
| 685-39-3 | M39 | 1 | £126.00 | In Stock | |
| 685-40-3 | M40 | 1 | £126.00 | 4 weeks | |
| 685-42-3 | M42 | 1 | £167.85 | In Stock | |
| 685-45-3 | M45 | 1 | £167.85 | 4 weeks | |
| 685-48-3 | M48 | 1 | £174.51 | In Stock | |
| 685-50-3 | M50 | 1 | £174.51 | In Stock | |
| 685-52-3 | M52 | 1 | £171.77 | 4 weeks | |
| 685-55-3 | M55 | 1 | £181.17 | 4 weeks | |
| 685-56-3 | M56 | 1 | £181.17 | 4 weeks | |
| 685-58-3 | M58 | 1 | £181.17 | 4 weeks | |
| 685-10-4 | M10 | 1.25 | £46.58 | In Stock | |
| 685-12-4 | M12 | 1.25 | £46.58 | 4 weeks | |
| 685-14-4 | M14 | 1.25 | £55.94 | 4 weeks | |
| 685-12-5 | M12 | 1.5 | £48.15 | In Stock | |
| 685-14-5 | M14 | 1.5 | £51.66 | 4 weeks | |
| 685-16-5 | M16 | 1.5 | £56.34 | In Stock | |
| 685-18-5 | M18 | 1.5 | £61.83 | In Stock | |
| 685-20-5 | M20 | 1.5 | £61.83 | In Stock | |
| 685-22-5 | M22 | 1.5 | £63.41 | 4 weeks | |
| 685-24-5 | M24 | 1.5 | £68.85 | 4 weeks | |
| 685-25-5 | M25 | 1.5 | £68.85 | 4 weeks | |
| 685-26-5 | M26 | 1.5 | £73.58 | 4 weeks | |
| 685-27-5 | M27 | 1.5 | £81.41 | 4 weeks | |
| 685-28-5 | M28 | 1.5 | £108.41 | 4 weeks | |
| 685-30-5 | M30 | 1.5 | £97.83 | In Stock | |
| 685-32-5 | M32 | 1.5 | £108.41 | 4 weeks | |
| 685-33-5 | M33 | 1.5 | £110.34 | In Stock | |
| 685-34-5 | M34 | 1.5 | £126.77 | In Stock | |
| 685-35-5 | M35 | 1.5 | £114.26 | 4 weeks | |
| 685-36-5 | M36 | 1.5 | £114.26 | In Stock | |
| 685-38-5 | M38 | 1.5 | £114.26 | In Stock | |
| 685-40-5 | M40 | 1.5 | £135.00 | 4 weeks | |
| 685-42-5 | M42 | 1.5 | £163.58 | In Stock | |
| 685-45-5 | M45 | 1.5 | £163.58 | 4 weeks | |
| 685-48-5 | M48 | 1.5 | £163.58 | In Stock | |
| 685-50-5 | M50 | 1.5 | £185.85 | In Stock | |
| 685-52-5 | M52 | 1.5 | £182.75 | 4 weeks | |
| 685-55-5 | M55 | 1.5 | £182.75 | In Stock | |
| 685-56-5 | M56 | 1.5 | £182.75 | 4 weeks | |
| 685-58-5 | M60 | 1.5 | £182.75 | 4 weeks | |
| 685-60-5 | M60 | 1.5 | £214.07 | 4 weeks | |
| 685-18-6 | M18 | 2 | £73.94 | 4 weeks | |
| 685-20-6 Viewing | M20 | 2 | £73.94 | 4 weeks | |
| 685-22-6 | M22 | 2 | £79.83 | 4 weeks | |
| 685-24-6 | M24 | 2 | £72.00 | 4 weeks | |
| 685-26-6 | M26 | 2 | £85.68 | In Stock | |
| 685-27-6 | M27 | 2 | £77.49 | 4 weeks | |
| 685-28-6 | M28 | 2 | £85.68 | 4 weeks | |
| 685-30-6 | M30 | 2 | £83.34 | 4 weeks | |
| 685-32-6 | M32 | 2 | £83.34 | 4 weeks | |
| 685-33-6 | M33 | 2 | £85.32 | 4 weeks | |
| 685-34-6 | M34 | 2 | £112.68 | In Stock | |
| 685-35-6 | M35 | 2 | £101.75 | In Stock | |
| 685-36-6 | M36 | 2 | £101.75 | 4 weeks | |
| 685-38-6 | M38 | 2 | £112.68 | In Stock | |
| 685-39-6 | M39 | 2 | £112.68 | 4 weeks | |
| 685-40-6 | M40 | 2 | £163.17 | In Stock | |
| 685-42-6 | M42 | 2 | £163.58 | 4 weeks | |
| 685-45-6 | M45 | 2 | £163.58 | 4 weeks | |
| 685-48-6 | M48 | 2 | £179.60 | In Stock | |
| 685-50-6 | M50 | 2 | £179.60 | In Stock | |
| 685-52-6 | M52 | 2 | £176.49 | 4 weeks | |
| 685-55-6 | M55 | 2 | £176.49 | 4 weeks | |
| 685-56-6 | M56 | 2 | £176.49 | In Stock | |
| 685-58-6 | M58 | 2 | £176.49 | 4 weeks | |
| 685-60-6 | M60 | 2 | £183.15 | In Stock | |
| 685-30-7 | M30 | 3 | £95.09 | In Stock | |
| 685-33-7 | M33 | 3 | £97.43 | In Stock | |
| 685-36-7 | M36 | 3 | £104.09 | 4 weeks | |
| 685-39-7 | M39 | 3 | £104.09 | In Stock | |
| 685-40-7 | M40 | 3 | £160.43 | In Stock | |
| 685-42-7 | M42 | 3 | £160.43 | In Stock | |
| 685-45-7 | M45 | 3 | £160.43 | In Stock | |
| 685-48-7 | M48 | 3 | £160.43 | In Stock | |
| 685-50-7 | M50 | 3 | £160.43 | In Stock | |
| 685-52-7 | M52 | 3 | £157.32 | 4 weeks | |
| 685-55-7 | M55 | 3 | £186.26 | 4 weeks | |
| 685-56-7 | M56 | 3 | £185.49 | In Stock | |
| 685-58-7 | M58 | 3 | £186.26 | 4 weeks | |
| 685-60-7 | M60 | 3 | £198.77 | 4 weeks |
No products match your filters.
