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JBO Thread Plug Gauge (Go/NoGo) - NPT - Right Hand - 1/2 x 14
| Thread Form | NPT |
| Size | 1/2 |
| Pitch | 14 |
| Gauge Type | Plug Gauge (Go/NoGo) |
| Thread Direction | Right Hand |
| Tolerance | N/A |
Learn more about Klarna
JBO Thread Plug Gauge (Go/NoGo) for NPT is a precision inspection tool designed to quickly verify the fit of right‑hand pipe threads. Sized for 1/2 x 14 NPT, it helps plumbers, manufacturers, and field technicians confirm conformance to thread standards and ensure reliable seals before assembly.
- Go/No-Go Verification for Fast Conformance: Quickly identify whether threads are within tolerance by using the Go end to test for a proper fit and the No-Go end to confirm what should not fit, enabling speedier inspections and reduced rework.
- Hardened Steel Construction for Long-Life Use: Built from durable hardened steel with a robust finish that withstands daily use, exposure to lubricants and solvents, and helps maintain accuracy over time.
- 1/2 x 14 Right-Hand NPT Standard Fit: Precisely sized for the common 1/2" NPT right-hand threads, ensuring reliable compatibility with typical pipe fittings, valves, and unions for consistent QA checks.
Whether you’re in a workshop, plant, or field service, this Go/No-Go thread gauge streamlines your inspection workflow, reduces downtime, and helps ensure every connection threads smoothly and seals reliably. The combination of accurate sizing and rugged construction provides confidence in every measurement and supports efficient, consistent results across your piping assemblies.
| Thread Form | NPT |
| Size | 1/2 |
| Pitch | 14 |
| Gauge Type | Plug Gauge (Go/NoGo) |
| Thread Direction | Right Hand |
| Tolerance | N/A |
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 Thread Plug Gauges - NPT Go/No-Go
View full collection →You are viewing JBO-512503. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-512502 | 1/16 | 27 | £167.77 | 5 days | |
| JBO-512505 | 1/8 | 27 | £157.90 | 5 days | |
| JBO-512504 | 1/4 | 18 | £167.77 | 5 days | |
| JBO-512510 | 3/8 | 18 | £179.84 | 5 days | |
| JBO-512503 Viewing | 1/2 | 14 | £197.38 | 5 days | |
| JBO-512509 | 3/4 | 14 | £222.60 | 5 days | |
| JBO-512499 | 1 | 11.5 | £255.50 | 5 days | |
| JBO-512501 | 1 1/4 | 11.5 | £335.54 | 5 days | |
| JBO-512500 | 1 1/2 | 11.5 | £378.30 | 5 days | |
| JBO-512506 | 2 | 11.5 | £463.83 | 5 days | |
| JBO-512507 | 2 1/2 | 8 | £550.46 | 5 days | |
| JBO-512508 | 3 | 8 | £666.68 | 5 days | |
| JBO-522600 | 3 1/2 | 8 | £872.83 | 5 days | |
| JBO-512511 | 4 | 8 | £992.35 | 5 days |
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