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JBO Thread Ring Gauge (Go/NoGo) - NPT - Right Hand - 2 1/2 x 8

SKU:JBO-502678

The JBO Thread Ring Gauge (Go/NoGo) for NPT Right Hand threads in the 2-1/2 x 8 size is a precise inspection tool designed to verify threaded pipe connections. It’s ideal for plumbers, pipefitter... Read more ↓
Thread FormNPT
Size2 1/2
Pitch8
Gauge TypeRing Gauge (Go/NoGo)
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£695.20
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The JBO Thread Ring Gauge (Go/NoGo) for NPT Right Hand threads in the 2-1/2 x 8 size is a precise inspection tool designed to verify threaded pipe connections. It’s ideal for plumbers, pipefitters, oil and gas technicians, and quality inspectors who need dependable checks to ensure fittings will thread correctly and seal reliably.

With a Go/No-Go design, this gauge provides quick, at-a-glance validation of conforming versus non-conforming threads, helping you confirm proper fitment during installation, maintenance, and quality control. Its focused testing approach supports consistent results across diverse work environments.

  • Go/No-Go Verification for NPT Threads: Delivers instant conformance checks, allowing fast pass/fail decisions and reducing rework by clearly distinguishing compliant and non-compliant threads.
  • NPT Right-Hand 2-1/2 x 8 Sizing: Precisely matched to the 2-1/2 x 8 NPT right-hand threads, ensuring accurate testing for common piping connections.
  • Meticulous Precision for Repeatable Results: Carefully engineered dimensions provide consistent measurements across inspections, supporting reliable quality control and easier operator training.

Using this gauge helps streamline workflow by speeding up inspections, preventing misthreaded assemblies, and ensuring seal integrity. It supports adherence to NPT standards, offers clear pass/fail feedback, and delivers dependable results that reduce downtime and rework while keeping projects on schedule.

Part Numbers

Protool Part Number
JBO-502678
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 Ring Gauges (Go/NoGo) - NPT

View full collection →

You are viewing JBO-502678. Click any other SKU to view its full details.

Product SKUSizePitchPriceStock Order
JBO-502671 1/1627£287.29 5 days
JBO-502675 1/827£266.46 5 days
JBO-502673 1/418£273.04 5 days
JBO-502681 3/818£285.10 5 days
JBO-502672 1/214£310.32 5 days
JBO-502680 3/414£338.82 5 days
JBO-502668 111.5£383.79 5 days
JBO-502670 1 1/411.5£450.66 5 days
JBO-502669 1 1/211.5£495.63 5 days
JBO-502677 211.5£606.39 5 days
JBO-502678 Viewing2 1/28£695.20 5 days
JBO-502679 38£887.08 5 days
JBO-542056 3 1/28£1,211.67 5 days
JBO-502683 48£1,459.46 5 days

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