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JBO Thread Ring Gauge (NoGo) - BSP (G) - Right Hand - Tol. A - 3 1/2 x 11
| Thread Form | BSP (G) |
| Size | 3 1/2 |
| Pitch | 11 |
| Gauge Type | Ring Gauge (NoGo) |
| Thread Direction | Right Hand |
| Tolerance | Tol. A |
Learn more about Klarna
The JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external BSP (G) threads on pipe fittings and connectors. It’s ideal for plumbers, fluid-handling technicians, engineers, and quality teams who need reliable, repeatable checks to ensure proper thread engagement and sealing in BSP systems.
- No-Go design for fast conformance checks: Quickly identify out-of-spec BSP (G) threads, enabling rapid pass/fail decisions and reducing the risk of mismatched fittings in assemblies.
- BSP (G) external thread verification: Calibrated to BSP (G) standards to ensure accurate diameter checks on everyday fittings and pipework.
- Ergonomic, field-ready format: Right-hand orientation with a knurled outer edge for a secure grip and a compact 3 1/2 x 11 size; tolerance A supports consistent, repeatable results in busy workshops and on-site tasks.
Using this gauge streamlines inspection workflows by providing a clear, objective check for thread conformity, helps prevent leaks and rework from incorrect fittings, and supports reliable sourcing and assembly in plumbing, hydraulics, and general engineering applications.
| Thread Form | BSP (G) |
| Size | 3 1/2 |
| Pitch | 11 |
| Gauge Type | Ring Gauge (NoGo) |
| Thread Direction | Right Hand |
| Tolerance | Tol. 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 Ring Gauges (NoGo) - BSP (G)
View full collection →You are viewing JBO-500097. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-500066 | 1/16 | 28 | £111.84 | 5 days | |
| JBO-500083 | 1/8 | 28 | £58.90 | 5 days | |
| JBO-500077 | 1/4 | 19 | £70.07 | 5 days | |
| JBO-500104 | 3/8 | 19 | £83.11 | 5 days | |
| JBO-500067 | 1/2 | 14 | £95.39 | 5 days | |
| JBO-500112 | 5/8 | 14 | £115.14 | 5 days | |
| JBO-500098 | 3/4 | 14 | £116.23 | 5 days | |
| JBO-500117 | 7/8 | 14 | £150.21 | 5 days | |
| JBO-500043 | 1 | 11 | £141.45 | 5 days | |
| JBO-500063 | 1 1/8 | 11 | £169.96 | 5 days | |
| JBO-500056 | 1 1/4 | 11 | £174.35 | 5 days | |
| JBO-500052 | 1 1/2 | 11 | £196.27 | 5 days | |
| JBO-500064 | 1 3/4 | 11 | £230.28 | 5 days | |
| JBO-500087 | 2 | 11 | £239.05 | 5 days | |
| JBO-500092 | 2 1/4 | 11 | £289.49 | 5 days | |
| JBO-500090 | 2 1/2 | 11 | £326.75 | 5 days | |
| JBO-500094 | 2 3/4 | 11 | £350.89 | 5 days | |
| JBO-500096 | 3 | 11 | £379.41 | 5 days | |
| JBO-500097 Viewing | 3 1/2 | 11 | £458.34 | 5 days | |
| JBO-500110 | 4 | 11 | £531.81 | 5 days | |
| JBO-540586 | 4 1/2 | 11 | £702.86 | 5 days | |
| JBO-540587 | 5 | 11 | £804.85 | 5 days | |
| JBO-505330 | 5 1/2 | 11 | £903.54 | 5 days | |
| JBO-540590 | 6 | 11 | £1,005.50 | 5 days | |
| JBO-500084 | 1/8 | 28 | £223.68 | 5 days | |
| JBO-500078 | 1/4 | 19 | £259.88 | 5 days | |
| JBO-500105 | 3/8 | 19 | £299.34 | 5 days | |
| JBO-500068 | 1/2 | 14 | £270.84 | 5 days | |
| JBO-500099 | 3/4 | 14 | £289.49 | 5 days | |
| JBO-500044 | 1 | 11 | £321.28 | 5 days | |
| JBO-503042 | 1 1/2 | 11 | £411.20 | 5 days | |
| JBO-500086 | 1/8 | 28 | £79.07 | 5 days | |
| JBO-500082 | 1/4 | 19 | £94.96 | 5 days | |
| JBO-500076 | 1/2 | 14 | £126.10 | 5 days | |
| JBO-500116 | 5/8 | 14 | £150.21 | 5 days | |
| JBO-500103 | 3/4 | 14 | £155.70 | 5 days | |
| JBO-505911 | 7/8 | 14 | £196.27 | 5 days | |
| JBO-500050 | 1 | 11 | £182.03 | 5 days | |
| JBO-506393 | 1 1/8 | 11 | £224.79 | 5 days | |
| JBO-503056 | 1 1/4 | 11 | £228.09 | 5 days | |
| JBO-505430 | 1 1/2 | 11 | £254.39 | 5 days | |
| JBO-506394 | 1 3/4 | 11 | £299.34 | 5 days | |
| JBO-505432 | 2 | 11 | £312.51 | 5 days | |
| JBO-506395 | 2 1/4 | 11 | £377.19 | 5 days | |
| JBO-505433 | 2 1/2 | 11 | £424.36 | 5 days | |
| JBO-506396 | 2 3/4 | 11 | £458.34 | 5 days | |
| JBO-506397 | 3 | 11 | £493.44 | 5 days |
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