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JBO Plug Gauge - Metric (STI) Heli Coil Gauge - Right Hand - 6H - M20 x 2.5 - Calibrated (DAkkS Calibration)
| Thread Form | Metric (STI) |
| Size | M20 |
| Pitch | 2.5 |
| Gauge Type | Plug Gauge (D/E) |
| Thread Direction | Right Hand |
| Tolerance | 6H |
Learn more about Klarna
The JBO Plug Gauge - Metric (STI) Right Hand - 6H - M20 x 2.5 is a calibrated precision gauge designed specifically for metric screw thread inserts (STIs). It’s ideal for manufacturers, inspectors, and technicians who need quick, reliable conformance checks to M20 x 2.5, 6H tolerances, and STI standards.
The rugged knurled body and dual-threaded ends stand up to daily workshop use, while DAkkS-calibrated certification provides traceability for QA records.
- DAkkS-calibrated with traceable accuracy: Provides documented calibration for QA audits and supplier qualification, so you can prove part conformance with confidence.
- Metric STI compatibility with dual-end design: Precisely sized for M20 x 2.5 inserts and 6H tolerance, enabling fast go/no-go checks without guesswork.
- Rugged, easy-handling construction: Knurled body and dual-ended, threaded ends deliver reliable measurements in daily use, even with gloves, and resist wear over time.
Using the JBO Plug Gauge helps streamline insert inspection, reduce rework from incorrect fits, and maintain consistent quality across parts. Its traceable calibration, adherence to STI standards, and durable design make it a dependable addition to any quality control, maintenance, or manufacturing toolkit.
| Thread Form | Metric (STI) |
| Size | M20 |
| Pitch | 2.5 |
| Gauge Type | Plug Gauge (D/E) |
| Thread Direction | Right Hand |
| Tolerance | 6H |
| Calibration | DAkkS Calibration Cert |
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 Metric Plug (STI) Heli Coil Gauges - Right Hand - Calibrated (DAkkS Calibration)
View full collection →You are viewing JBO-512677. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-512675 | M2 | 0.4 | £127.21 | 5 days | |
| JBO-512676 | M2.5 | 0.45 | £118.42 | 5 days | |
| JBO-512679 | M3 | 0.5 | £106.04 | 5 days | |
| JBO-512682 | M4 | 0.7 | £94.87 | 5 days | |
| JBO-512683 | M5 | 0.8 | £91.78 | 5 days | |
| JBO-512685 | M6 | 1 | £91.78 | 5 days | |
| JBO-513473 | M7 | 1 | £141.45 | 5 days | |
| JBO-512686 | M8 | 1.25 | £91.78 | 5 days | |
| JBO-512666 | M10 | 1.5 | £99.68 | 5 days | |
| JBO-512668 | M12 | 1.75 | £131.59 | 5 days | |
| JBO-512671 | M14 | 2 | £161.19 | 5 days | |
| JBO-512673 | M16 | 2 | £177.65 | 5 days | |
| JBO-512674 | M18 | 2.5 | £246.71 | 5 days | |
| JBO-512677 Viewing | M20 | 2.5 | £256.58 | 5 days | |
| JBO-513023 | M24 | 3 | £303.75 | 5 days | |
| JBO-513019 | M8 | 1 | £182.03 | 5 days | |
| JBO-513020 | M10 | 1 | £206.14 | 5 days | |
| JBO-515046 | M10 | 1.25 | £256.58 | 5 days | |
| JBO-515572 | M12 | 1.25 | £264.27 | 5 days | |
| JBO-512670 | M12 | 1.5 | £214.91 | 5 days | |
| JBO-512672 | M14 | 1.5 | £224.79 | 5 days | |
| JBO-513021 | M16 | 1.5 | £233.56 | 5 days | |
| JBO-513975 | M18 | 1.5 | £239.05 | 5 days | |
| JBO-512678 | M20 | 1.5 | £252.20 | 5 days | |
| JBO-513454 | M22 | 1.5 | £266.46 | 5 days | |
| JBO-513146 | M24 | 1.5 | £271.93 | 5 days |
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