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JBO Thread Plug Gauge - BSW Go/No-Go - Right Hand - Medium Class - 5/16 x 18
| Thread Form | BSW |
| Size | 5/16 |
| Pitch | 18 |
| Gauge Type | Plug Gauge (D/E) |
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Description
The JBO Thread Plug Gauge is a right-hand, medium-class plug gauge sized for 5/16 x 18 threads. This go/no-go tool enables quick, definitive checks to confirm threaded holes meet the specified dimensions and thread standards, supporting reliable fitment in manufacturing, automotive, and aerospace applications.
- Go/No-Go quick checks: Instantly distinguish conforming from non-conforming threads to speed inspections and minimize downtime.
- Precise 5/16 x 18 right-hand, medium class: Engineered to exact dimensions for repeatable, reliable hole checks across batches.
- Rugged, user-friendly design: Knurled grip and durable finish provide secure handling in busy workshops for consistent use.
Using the JBO Thread Plug Gauge streamlines threaded-hole inspection by delivering clear pass/fail results with a single check, reducing rework and downtime. Its precise dimensions and durable construction help maintain consistent thread quality across parts, accelerate QA workflows, and give teams the confidence that assemblies will fit correctly the first time.
Part Numbers
- Protool Part Number
- JBO-512646
- 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 - BSW Go/No-Go
View full collection →You are viewing JBO-512646. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| JBO-512632 | 1/8 | 40 | £130.48 | 5 days | |
| JBO-512641 | 3/16 | 24 | £91.67 | 5 days | |
| JBO-512631 | 1/4 | 20 | £88.50 | 5 days | |
| JBO-512646 Viewing | 5/16 | 18 | £91.01 | 5 days | |
| JBO-512644 | 3/8 | 16 | £92.54 | 5 days | |
| JBO-512650 | 7/16 | 14 | £96.83 | 5 days | |
| JBO-512630 | 1/2 | 12 | £102.32 | 5 days | |
| JBO-512653 | 9/16 | 12 | £111.84 | 5 days | |
| JBO-512649 | 5/8 | 11 | £116.23 | 5 days | |
| JBO-512643 | 3/4 | 10 | £131.59 | 5 days | |
| JBO-512652 | 7/8 | 9 | £151.32 | 5 days | |
| JBO-512625 | 1 | 8 | £173.24 | 5 days | |
| JBO-513033 | 1 1/8 | 7 | £195.18 | 5 days | |
| JBO-512628 | 1 1/4 | 7 | £208.34 | 5 days | |
| JBO-516821 | 1 3/8 | 6 | £231.36 | 5 days | |
| JBO-512627 | 1 1/2 | 6 | £255.50 | 5 days |
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