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JBO Thread Plug Gauge (Go/NoGo) - NPT - Right Hand - 3 x 8
| Thread Form | NPT |
| Size | 3 |
| Pitch | 8 |
| Gauge Type | Plug Gauge (Go/NoGo) |
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Description
The JBO Thread Plug Gauge (Go/NoGo) is a precision tool engineered to verify NPT right-hand threaded pipe fittings. Designed for use in plumbing, oil and gas, and manufacturing environments, this 3 x 8 gauge helps ensure threaded connections meet exact standards, supporting reliable fittings and proper seals. Its Go/No-Go design lets you quickly confirm whether threads are within tolerance, minimizing guesswork during inspections.
- Go/No-Go Design for Quick Verification: Instantly distinguish conforming versus non-conforming threads, speeding up quality checks and reducing rework time.
- Right-Hand NPT Thread Compatibility: Specifically matched to standard NPT right-hand threads to ensure accurate, consistent checks on common pipe connections.
- Hardened Steel Construction: Built to last under frequent use, resisting wear and maintaining reliable measurements in demanding workshop and field environments.
Using the JBO Thread Plug Gauge simplifies inspections, improves workflow confidence, and helps ensure every threaded connection delivers a secure seal. It supports faster decision-making, fewer threading errors, and more consistent results across plumbing, maintenance, and fabrication projects.
Part Numbers
- Protool Part Number
- JBO-512508
- 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-512508. 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 | 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 Viewing | 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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