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JBO Thread Ring Gauge (NoGo) - BSW - Right Hand - Medium Class - 7/8 x 9
| Thread Form | BSW |
| Size | 7/8 |
| Pitch | 9 |
| Gauge Type | Ring Gauge (NoGo) |
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Description
The JBO Thread Ring Gauge (NoGo) is a purpose-built tool for quickly verifying external threads on components with right-hand BSW threading. Sized for a 7/8 in major diameter and 9 threads per inch, it supports precise checks in manufacturing, automotive, and aerospace QA workflows.
Made from hardened steel for durability, this gauge features a dedicated NoGo segment that clearly indicates non-conforming threads, helping you ensure proper fit, reliable performance, and consistent quality across parts.
- NoGo Design for Quick Non-Conforming Thread Detection: The NoGo segment provides an immediate pass/fail indication so inspectors can spot mismatched threads at a glance and halt faulty parts before assembly.
- Hardened Steel Construction for Durability: Built to withstand daily use in busy shops and production lines while preserving measurement accuracy and edge wear resistance.
- Exact 7/8 in x 9 TPI Right-Hand BSW Alignment: Precisely sized for the specified diameter and pitch, ensuring reliable testing against standard right-hand BSW thread profiles.
By integrating this gauge into your inspection routine, you’ll speed up threaded-component checks, reduce downtime, and improve confidence in fitment and performance across critical assemblies. Its robust construction and clear NoGo indication help you maintain consistent results, lower scrap, and support compliant manufacturing processes.
Part Numbers
- Protool Part Number
- JBO-501291
- 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 Ring Gauges (NoGo) - BSW
View full collection →You are viewing JBO-501291. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-501273 | 1/8 | 40 | £114.03 | 5 days | |
| JBO-501280 | 3/16 | 24 | £84.55 | 5 days | |
| JBO-501272 | 1/4 | 20 | £81.48 | 5 days | |
| JBO-501285 | 5/16 | 18 | £87.84 | 5 days | |
| JBO-501283 | 3/8 | 16 | £92.11 | 5 days | |
| JBO-501288 | 7/16 | 14 | £97.27 | 5 days | |
| JBO-501271 | 1/2 | 12 | £102.86 | 5 days | |
| JBO-501293 | 9/16 | 12 | £115.14 | 5 days | |
| JBO-501287 | 5/8 | 11 | £123.91 | 5 days | |
| JBO-501282 | 3/4 | 10 | £134.87 | 5 days | |
| JBO-501291 Viewing | 7/8 | 9 | £156.81 | 5 days | |
| JBO-501266 | 1 1/8 | 7 | £196.27 | 5 days | |
| JBO-501265 | 1 1/4 | 7 | £213.83 | 5 days | |
| JBO-501263 | 1-8 | 6 | £175.43 | 5 days | |
| JBO-501264 | 1 1/2 | 6 | £256.58 | 5 days | |
| JBO-501268 | 1 3/4 | 5 | £299.34 | 5 days | |
| JBO-501275 | 2 | 4.5 | £343.21 | 5 days |
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