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JBO Thread Ring Gauge (NoGo) - BSW - Right Hand - Medium Class - 5/16 x 18
| Thread Form | BSW |
| Size | 5/16 |
| Pitch | 18 |
| Gauge Type | Ring Gauge (NoGo) |
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Description
The JBO Thread Ring Gauge (NoGo) for 5/16 x 18 BSW right-hand threads is a precision tool designed to quickly and reliably verify external thread diameters. Sized for medium-class tolerance, its NoGo function helps inspectors and machinists determine whether a part’s threads meet standard specifications, ensuring proper fitment and reliable performance in critical assemblies. Crafted from hardened steel, this gauge is built to withstand daily use in manufacturing, automotive, and aerospace environments.
- Precisely sized for 5/16 x 18 BSW right-hand threads: Ensures accurate external diameter checks against standard thread specifications for dependable fit and early defect detection.
- NoGo design for fast conformance indication: Allows immediate pass/fail decisions, reducing inspection time and preventing improper assemblies.
- Hardened steel construction for long-lasting accuracy: Delivers durable, wear-resistant performance that maintains dimensional stability through repetitive use on the shop floor.
With the JBO Thread Ring Gauge, you gain a reliable, repeatable method to verify thread fit quickly, helping to shorten inspection cycles and improve first-pass quality. Its rugged construction supports consistent results in busy production environments, enabling faster decision-making for engineers, buyers, and technicians while reducing downtime and rework.
Part Numbers
- Protool Part Number
- JBO-501285
- 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-501285. 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 Viewing | 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 | 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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