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JBO Thread Plug Gauge (Go/NoGo) - NPTF - Right Hand - 1 1/2 x 11.5

SKU:JBO-512540

The JBO Thread Plug Gauge (Go/NoGo) for NPTF in a right-hand configuration, sized at 1 1/2 x 11.5, is a precision inspection tool designed to quickly verify threaded holes and fasteners. It’s ide... Read more ↓
Thread FormNPTF
Size1 1/2
Pitch11.5
Gauge TypePlug Gauge (Go/NoGo)
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£416.67
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 Plug Gauge (Go/NoGo) for NPTF in a right-hand configuration, sized at 1 1/2 x 11.5, is a precision inspection tool designed to quickly verify threaded holes and fasteners. It’s ideal for professionals across manufacturing, automotive, and aerospace environments who need reliable thread acceptance checks—without guesswork.

Its Go/No-Go design delivers fast, clear pass/fail results, helping inspectors and technicians confirm threads meet the required standards and reducing downtime caused by ambiguous inspections.

  • Go/No-Go Design for Quick Conformance Checks: Instantly distinguish conforming from non-conforming threads, speeding inspections and minimizing rework.
  • Exact 1 1/2 x 11.5 NPTF Right-Hand Threads: Precise dimensions align with Unified thread standards, enabling accurate acceptance or rejection of threaded holes.
  • Knurled Body for Secure Handling: Textured exterior provides a firm grip and easy manipulation during setup and testing for efficient inspections.

Designed to integrate smoothly into quality-control workflows, this gauge helps you verify threading accuracy early in production, speeding assembly, reducing scrap, and delivering consistent results across parts and batches. The go/no-go action supports reliable, rapid decisions, helping teams stay on schedule and uphold threading standards.

Part Numbers

Protool Part Number
JBO-512540
Brand
JBO
Category
Gauge
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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 - NPTF Go/No-Go

View full collection →

You are viewing JBO-512540. Click any other SKU to view its full details.

Product SKUSizePitchPriceStock Order
JBO-512542 1/1627£183.12 5 days
JBO-512545 1/827£188.61 5 days
JBO-512544 1/418£201.76 5 days
JBO-512547 3/818£218.21 5 days
JBO-512543 1/214£235.75 5 days
JBO-512546 3/414£264.27 5 days
JBO-512539 111.5£304.83 5 days
JBO-512541 1 1/411.5£367.34 5 days
JBO-512540 Viewing1 1/211.5£416.67 5 days
JBO-513622 211.5£510.98 5 days
JBO-517008 2 1/28£604.17 5 days
JBO-517007 38£735.76 5 days

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