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

Asimeto Ring Thread Gauge (Go/NoGo) - Imperial - Right Hand - ASMEB1.20.1-2013 - 1/2 x 14

SKU:690-44-3

Asimeto Ring Thread Gauge (Go/NoGo) in Imperial size 1/2 x 14 is a precision external thread inspection tool designed for machinists, quality labs, and job shops. Right-handed and ASMEB1.20.1-201... Read more ↓
Thread FormNPT
Size1/2
Pitch14
Gauge TypeRing Gauge (Go/NoGo)
Thread DirectionRight Hand
ToleranceASMEB1.20.1-2013
View all specifications ↓
£260.60
Prices shown ex. VAT
In Stock— only 2 left
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

Asimeto Ring Thread Gauge (Go/NoGo) in Imperial size 1/2 x 14 is a precision external thread inspection tool designed for machinists, quality labs, and job shops. Right-handed and ASMEB1.20.1-2013 compliant, it provides clear go/no-go feedback to verify thread accuracy quickly.

  • Go/NoGo design: Dual check faces deliver fast pass/fail assessments for both minimum and maximum thread limits, supporting efficient quality control in busy production environments.
  • Imperial size: 1/2 x 14 (coarse thread) aligns with common fastener and fitting specifications used across many industries.
  • Right-hand orientation: Configured for standard external threads, ensuring straightforward use with typical components.
  • 3-step L3 design: A three-step engagement profile provides consistent depth verification and tolerance assessment along the thread, improving repeatability.
  • Industry-standard compliance: Conforms to ASMEB1.20.1-2013, supporting traceable and repeatable inspections in regulated environments.
  • Durable, shop-ready construction: Built to withstand daily handling and repeated insertions, helping maintain accuracy over time.

This gauge is ideal for incoming inspections, in-process checks, and final qualification of 1/2-14 external threads on bolts, studs, fittings, and related components. Use it to reduce guesswork, minimize rework, and speed up setup and QA workflows by delivering immediate, objective results in a professional manufacturing setting.

Thread Form NPT
Size 1/2
Pitch 14
Gauge Type Ring Gauge (Go/NoGo)
Thread Direction Right Hand
Tolerance ASMEB1.20.1-2013
Middle Diameter Size 0.77843
Gauge Tolerance ± 0.0003

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: Asimeto Ring Thread Gauges (Go/NoGo) - Imperial - Right Hand - ASMEB1.20.1-2013

View full collection →

You are viewing 690-44-3. Click any other SKU to view its full details.

Product SKUSizePitchMiddle Diameter SizeGauge TolerancePriceStock Order
690-40-3 1/16270.28118± 0.0003£133.83 In Stock
690-41-3 1/8270.37360± 0.0003£151.43 In Stock
690-42-3 1/4180.49163± 0.0003£164.34 4 weeks
690-43-3 3/8180.62701± 0.0003£216.41 In Stock
690-44-3 Viewing1/2140.77843± 0.0003£260.60 In Stock
690-45-3 3/4140.98887± 0.0003£294.66 4 weeks
690-46-3 111.51.23863± 0.0004£328.68 4 weeks
690-47-3 1.1/411.51.58338± 0.0004£459.00 4 weeks
690-48-3 1.1/211.51.82234± 0.0004£493.43 4 weeks
690-49-3 211.52.29627± 0.0004£520.07 4 weeks
690-50-3 2.1/282.76216± 0.0005£542.75 4 weeks
690-51-3 383.38850± 0.0005£570.15 4 weeks

View Other Sizes

with tools we think you'll like