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Asimeto Ring Thread Gauge (Go) - Metric - Right Hand - 6g - M40 x 1
| Thread Form | Metric |
| Size | M40 |
| Pitch | 1 |
| Gauge Type | Ring Gauge (GO) |
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Description
The Asimeto Ring Thread Gauge (Go) — Metric, Right Hand, 6g, M40 x 1 — is a precision Go gauge crafted to quickly and reliably verify external metric threads. Designed for professional quality control in automotive, aerospace, and engineering manufacturing, it helps ensure every threaded component meets exact size requirements before assembly.
- Series: 685 Series ring gauges, engineered for durable, repeatable measurements in demanding environments.
- Material: High-quality steel construction for lasting precision and rugged shop-floor use.
- Thread compatibility: Metric Fine 6g threading to match M40 x 1 external (right-hand) threads with tight tolerance.
- Function: Go gauge that confirms minimum thread size and proper fit during inspection and assembly checks.
- Applications: Ideal for automotive, aerospace, and general engineering quality control, calibration labs, and supplier part verification.
With the Asimeto GO ring gauge, inspectors can rapidly determine if a part’s external M40 x 1 thread meets the required minimum size, reducing guesswork and preventing mismatched fasteners. The robust steel design withstands daily handling in busy production lines, while the metric fine 6g tolerance aligns with industry standards for reliable cross-compatibility. Use it on the shop floor for go/no-go checks, in incoming inspection, or during maintenance verification to streamline quality decisions and support consistent, high-quality assemblies.
Part Numbers
- Protool Part Number
- 685-40-3
- 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 685-40-3. 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 Viewing | 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 | 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 |
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