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JBO Thread Ring Gauge (NoGo) - BSP (G) - Right Hand - Tol. A - 3/8 x 19

SKU:JBO-500104

The JBO Thread Ring Gauge (NoGo) for BSP (G) threads is a precision tool designed to verify external threads on fittings and pipes. Sized for Right Hand use with Tol. A and a 3/8 x 19 specificatio... Read more ↓
Thread FormBSP (G)
Size3/8
Pitch19
Gauge TypeRing Gauge (NoGo)
Thread DirectionRight Hand
ToleranceTol. A
£83.11
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The JBO Thread Ring Gauge (NoGo) for BSP (G) threads is a precision tool designed to verify external threads on fittings and pipes. Sized for Right Hand use with Tol. A and a 3/8 x 19 specification, it is well suited for plumbers, engineers, machinists, and maintenance teams who need fast, reliable fit checks on the bench or in the field.

The NoGo design makes it easy to spot non-conforming threads, helping prevent leaks, cross-threading, and incorrect assemblies. Its compact ring form supports streamlined storage and on-site testing, delivering consistent results across jobs and batches.

  • NoGo verification design: Quickly identify non-conforming BSP (G) external threads during inspection, enabling fast pass/fail decisions and reducing rework.
  • Precisely dimensioned BSP (G) 3/8 x 19, Tol. A: Delivers consistent, repeatable measurements aligned with BSP standards, supporting reliable QA checks and supplier acceptance.
  • Ergonomic, durable construction: Knurled outer edge provides a secure grip in tight spaces, while a robust design withstands daily shop or field use.

Using this gauge helps streamline workflow, save time, and improve results by providing clear, repeatable verification of thread conformity, reducing installation errors and rework, and ensuring leak-free connections in critical plumbing and fluid-handling applications. The gauge’s straightforward go/no-go assessment fits smoothly into QC routines, tool audits, and assembly processes, giving teams confidence to move projects forward with consistent quality.

Thread Form BSP (G)
Size 3/8
Pitch 19
Gauge Type Ring Gauge (NoGo)
Thread Direction Right Hand
Tolerance Tol. A

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.

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Staff are very helpful and interested in providing a good service making us the customer feel valued.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
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Full Range: JBO Thread Ring Gauges (NoGo) - BSP (G)

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You are viewing JBO-500104. Click any other SKU to view its full details.

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