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JBO Thread Plug Gauge - BSW Go/No-Go - Right Hand - Medium Class - 1 3/8 x 6
| Thread Form | BSW |
| Size | 1 3/8 |
| Pitch | 6 |
| Gauge Type | Plug Gauge (D/E) |
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Description
The JBO Thread Plug Gauge is a precision go/no-go tool designed to verify BSW right-hand threaded holes at 1 3/8 x 6 with Medium class tolerance. Its two-ended design delivers quick, reliable go/no-go checks, making it ideal for production floors, quality control departments, automotive, aerospace, and maintenance operations that rely on fast, repeatable thread verification.
- Go/No-Go Quick Validation: Instantly confirms whether a hole meets the required thread size and depth, delivering a clear pass or fail to speed up inspections and reduce rework.
- BSW Right-Hand Threads, 1 3/8 x 6, Medium Class: Precisely sized ends align with standard British Standard Whitworth right-hand threads, ensuring accurate checks against the correct tolerance class.
- Rugged, Ergonomic Construction: Knurled grip and durable metal ends provide secure handling in busy workshops and long service life in daily gauging tasks.
Whether you're assembling machinery, testing components, or performing routine maintenance, this gauge helps you make confident, data-backed decisions quickly—keeping parts moving, improving quality, and reducing downtime.
Part Numbers
- Protool Part Number
- JBO-516821
- 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-516821. 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 | 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 Viewing | 1 3/8 | 6 | £231.36 | 5 days | |
| JBO-512627 | 1 1/2 | 6 | £255.50 | 5 days |
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