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JBO Thread Ring Gauge (NoGo) - BSW - Right Hand - Medium Class - 1/2 x 12

SKU:JBO-501271

JBO Thread Ring Gauge (NoGo) - BSW - Right Hand - Medium Class - 1/2 x 12 is a precision tool for verifying external thread diameters. Ideal for manufacturers, automotive and aerospace shops, as ... Read more ↓
Thread FormBSW
Size1/2
Pitch12
Gauge TypeRing Gauge (NoGo)
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£102.86
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

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Description

JBO Thread Ring Gauge (NoGo) - BSW - Right Hand - Medium Class - 1/2 x 12 is a precision tool for verifying external thread diameters. Ideal for manufacturers, automotive and aerospace shops, as well as QA teams, it helps ensure threaded components meet Unified thread standards through accurate size checks.

The NoGo design provides a quick, unmistakable indication of non-conforming threads, helping you confirm proper fitment before assembly. Crafted from hardened steel, this gauge is built to withstand daily use in demanding workshop environments.

  • NoGo verification for fast, clear quality checks: The NoGo design lets you instantly identify out-of-tolerance threads, speeding inspections and reducing scrap or rework.
  • BSW Right-Hand, Medium Class, 1/2 x 12 matching: Precisely sized for standard BSW right-hand threads in medium class, delivering reliable cross-checks with your parts, fixtures, and tooling.
  • Hardened steel construction for lasting accuracy: Tough, wear-resistant material maintains dimensional stability through repeated use in busy production environments.

Using this JBO Thread Ring Gauge helps streamline your quality checks, improves workflow by enabling quick go/no-go decisions, and reduces assembly risk by ensuring threaded parts meet required standards. Its durable construction and precise design give you confidence that measurements stay consistent over time, supporting reliable performance across manufacturing, automotive, and aerospace applications.

Part Numbers

Protool Part Number
JBO-501271
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 Ring Gauges (NoGo) - BSW

View full collection →

You are viewing JBO-501271. Click any other SKU to view its full details.

Product SKUSizePitchPriceStock Order
JBO-501273 1/840£114.03 5 days
JBO-501280 3/1624£84.55 5 days
JBO-501272 1/420£81.48 5 days
JBO-501285 5/1618£87.84 5 days
JBO-501283 3/816£92.11 5 days
JBO-501288 7/1614£97.27 5 days
JBO-501271 Viewing1/212£102.86 5 days
JBO-501293 9/1612£115.14 5 days
JBO-501287 5/811£123.91 5 days
JBO-501282 3/410£134.87 5 days
JBO-501291 7/89£156.81 5 days
JBO-501266 1 1/87£196.27 5 days
JBO-501265 1 1/47£213.83 5 days
JBO-501263 1-86£175.43 5 days
JBO-501264 1 1/26£256.58 5 days
JBO-501268 1 3/45£299.34 5 days
JBO-501275 24.5£343.21 5 days

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