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JBO Thread Plug Gauge (Go/NoGo) - NPT - Right Hand - 3/8 x 18
| Thread Form | NPT |
| Size | 3/8 |
| Pitch | 18 |
| Gauge Type | Plug Gauge (Go/NoGo) |
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Description
The JBO Thread Plug Gauge (Go/NoGo) – NPT – Right Hand – 3/8 x 18 is a precision inspection tool built to verify threaded pipe connections quickly and accurately. Designed for plumbers, manufacturers, and field technicians, it helps you confirm that 3/8 x 18 NPT right-hand threads conform to standard specifications, ensuring proper fit and reliable sealing with mating fittings.
Designed for everyday use on the shop floor or in the field, this gauge pair provides straightforward go/no-go checks that speed up quality control without requiring complex setup or interpretation. Its clean, rugged design is made to withstand regular handling during inspections, assemblies, and maintenance tasks.
- Go/No-Go design for rapid conformance checks: Quickly determine whether the threads meet the 3/8 x 18 NPT specification, reducing guesswork, rework, and downtime.
- NPT right-hand thread verification: Specifically calibrated for standard NPT right-hand connections to ensure correct engagement and compatible fit with standard pipe fittings.
- Hardened steel construction: Built for durability and long tool life, resisting wear and maintaining accuracy through repeated use in demanding environments.
Using the JBO Thread Plug Gauge helps streamline measurements, improves workflow reliability, and supports consistent results across plumbing, oil and gas, and manufacturing applications. It provides confidence that fittings will mate properly and seal as intended, ensuring smoother installation and maintenance processes.
Part Numbers
- Protool Part Number
- JBO-512510
- Brand
- JBO
- 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: JBO Thread Plug Gauges - NPT Go/No-Go
View full collection →You are viewing JBO-512510. 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 Viewing | 3/8 | 18 | £179.84 | 5 days | |
| JBO-512503 | 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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