Please log in here to access all benefits, including promotional discounts and faster checkouts.

JBO Thread Plug Gauge (GO) - BSP (G) - Left Hand - 2 1/2 x 11

SKU:JBO-517313

The JBO Thread Plug Gauge (GO) for BSP (G) left-hand threads is a precision inspection tool designed for plumbing, fluid handling, and engineering applications. Built to verify BSP G threaded fit... Read more ↓
Thread FormBSP (G)
Size2 1/2
Pitch11
Gauge TypePlug Gauge (GO)
View all specifications ↓
£232.47
Prices shown ex. VAT
5 days estimated lead time — subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Compatible certification

The ones our customers buy most.

Description

The JBO Thread Plug Gauge (GO) for BSP (G) left-hand threads is a precision inspection tool designed for plumbing, fluid handling, and engineering applications. Built to verify BSP G threaded fittings will screw in smoothly and seal reliably, it helps reduce guesswork during installation and maintenance.

Designed with exact 2 1/2 x 11 dimensions, it stands up to daily use in workshops, field service, and production environments. The left-hand variant ensures you’re testing the correct thread form, helping to prevent cross-threading and leaks and enabling faster, more confident QC checks.

  • Go-Gauge design for quick verification: quickly determine that BSP G threads will thread in and seal properly, speeding inspections and reducing trial fittings.
  • BSP (G) left-hand compatibility: specifically matched to left-hand BSP G threads, ensuring accurate checks and preventing incorrect assemblies.
  • Precise 2 1/2 x 11 size for consistent results: exact dimensional fit enables reliable go/no-go decisions across fittings and applications.

Using this gauge, professionals—from technicians and buyers to engineers and tradespeople—can streamline quality checks, shorten installation times, and achieve reliable, leak-free connections. Its durable construction supports long-term use across multiple projects, helping you maintain consistent performance in demanding environments.

Part Numbers

Protool Part Number
JBO-517313
Brand
JBO
Category
Gauge
No downloads are attached to this product yet.
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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: JBO Thread Plug Gauges (GO) - BSP (G)

View full collection →

You are viewing JBO-517313. Click any other SKU to view its full details.

Product SKUSizePitchPriceStock Order
JBO-510764 1 1/411£97.16 5 days
JBO-510763 1 1/211£111.84 5 days
JBO-510767 1 3/411£133.78 5 days
JBO-510786 211£141.45 5 days
JBO-510789 2 1/411£169.96 5 days
JBO-510788 2 1/211£176.54 5 days
JBO-510790 2 3/411£208.34 5 days
JBO-510791 311£207.25 5 days
JBO-510792 3 1/211£250.01 5 days
JBO-510798 411£298.26 5 days
JBO-520129 4 1/211£377.19 5 days
JBO-516657 511£415.59 5 days
JBO-520130 5 1/211£449.58 5 days
JBO-516658 611£493.44 5 days
JBO-510765 1 1/411£126.10 5 days
JBO-513942 1 1/211£149.13 5 days
JBO-517311 1 3/411£174.35 5 days
JBO-510787 211£184.22 5 days
JBO-517312 2 1/411£221.49 5 days
JBO-517313 Viewing2 1/211£232.47 5 days
JBO-517314 2 3/411£257.69 5 days
JBO-517315 311£273.04 5 days

Other sizes in this range

with tools we think you'll like
All 22 →