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

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

SKU:JBO-500105

The JBO Thread Ring Gauge (NoGo) is a precision measurement tool designed to verify external BSP (G) threads on pipe fittings. Sized for 3/8 x 19 and right-hand configuration, it helps plumbers, ... Read more ↓
Thread FormBSP (G)
Size3/8
Pitch19
Gauge TypeRing Gauge (NoGo)
Thread DirectionRight Hand
ToleranceTol. B
£299.34
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

The JBO Thread Ring Gauge (NoGo) is a precision measurement tool designed to verify external BSP (G) threads on pipe fittings. Sized for 3/8 x 19 and right-hand configuration, it helps plumbers, engineers, and QA teams quickly confirm that fittings will thread correctly and seal properly.

Designed for daily use in workshops, field service, and production environments, the No-Go design makes out-of-tolerance threads easy to identify at a glance—saving time and reducing the risk of leaks in critical piping systems.

  • Precise BSP (G) No-Go dimensions: Quickly verify external thread diameters against BSP (G) standards to identify undersized or oversized threads, reducing guesswork and ensuring proper fit and seal.
  • Right-Hand Tol. B configuration: Optimized for common right-hand BSP threads, delivering consistent measurements across fittings and batches.
  • Rugged construction with clear marking: Durable metal body with a knurled edge for easy handling and a distinct index marker for fast alignment, built to withstand daily shop and field use.

This gauge helps streamline inspections, minimize downtime, and deliver reliable, leak-free connections in plumbing, fluid handling, and engineering projects. With its precise tolerances and sturdy construction, you can buy with confidence knowing your BSP (G) fittings meet the required standards every time.

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

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.

★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
Bill
★★★★★
first place we look
honest about stock and prices are competitive.
Phil
★★★★★
Polite and helpful
Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
Graham
★★★★★
Buying experience
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.
Jeremy

Full Range: JBO Thread Ring Gauges (NoGo) - BSP (G)

View full collection →

You are viewing JBO-500105. Click any other SKU to view its full details.

Product SKUSizePitchPriceStock Order
JBO-500066 1/1628£111.84 5 days
JBO-500083 1/828£58.90 5 days
JBO-500077 1/419£70.07 5 days
JBO-500104 3/819£83.11 5 days
JBO-500067 1/214£95.39 5 days
JBO-500112 5/814£115.14 5 days
JBO-500098 3/414£116.23 5 days
JBO-500117 7/814£150.21 5 days
JBO-500043 111£141.45 5 days
JBO-500063 1 1/811£169.96 5 days
JBO-500056 1 1/411£174.35 5 days
JBO-500052 1 1/211£196.27 5 days
JBO-500064 1 3/411£230.28 5 days
JBO-500087 211£239.05 5 days
JBO-500092 2 1/411£289.49 5 days
JBO-500090 2 1/211£326.75 5 days
JBO-500094 2 3/411£350.89 5 days
JBO-500096 311£379.41 5 days
JBO-500097 3 1/211£458.34 5 days
JBO-500110 411£531.81 5 days
JBO-540586 4 1/211£702.86 5 days
JBO-540587 511£804.85 5 days
JBO-505330 5 1/211£903.54 5 days
JBO-540590 611£1,005.50 5 days
JBO-500084 1/828£223.68 5 days
JBO-500078 1/419£259.88 5 days
JBO-500105 Viewing3/819£299.34 5 days
JBO-500068 1/214£270.84 5 days
JBO-500099 3/414£289.49 5 days
JBO-500044 111£321.28 5 days
JBO-503042 1 1/211£411.20 5 days
JBO-500086 1/828£79.07 5 days
JBO-500082 1/419£94.96 5 days
JBO-500076 1/214£126.10 5 days
JBO-500116 5/814£150.21 5 days
JBO-500103 3/414£155.70 5 days
JBO-505911 7/814£196.27 5 days
JBO-500050 111£182.03 5 days
JBO-506393 1 1/811£224.79 5 days
JBO-503056 1 1/411£228.09 5 days
JBO-505430 1 1/211£254.39 5 days
JBO-506394 1 3/411£299.34 5 days
JBO-505432 211£312.51 5 days
JBO-506395 2 1/411£377.19 5 days
JBO-505433 2 1/211£424.36 5 days
JBO-506396 2 3/411£458.34 5 days
JBO-506397 311£493.44 5 days

View Other Sizes

with tools we think you'll like