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Truthread Thread Ring Gauge (NoGo) - UN - Right Hand - 2A - 1.1/4x20

SKU:PRO2100281

Truthread Thread Ring Gauge (NoGo) for UN threads, Right Hand, 2A, 1.1/4x20, is a precision tool designed to verify that UN-threaded components stay within the specified size range. It’s ideal fo... Read more ↓
Thead FormUN
Size1.1/4
Pitch20
Gauge TypeRing Gauge (NoGo)
View all specifications ↓
£214.65
Prices shown ex. VAT
Available on back order — subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

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Description

Truthread Thread Ring Gauge (NoGo) for UN threads, Right Hand, 2A, 1.1/4x20, is a precision tool designed to verify that UN-threaded components stay within the specified size range. It’s ideal for engineers, machinists, quality inspectors, and assembly teams who need fast, reliable checks on threaded parts.

Calibrated to ensure that the thread is within tolerance, the NoGo gauge checks the minimum material condition of the part, ensuring it is within the lower limit of the allowable size. This makes it ideal for measuring threaded parts that should not be larger than the maximum allowable size, helping you prevent out-of-tolerance components from entering production or assemblies.

  • UN Thread-specific NoGo gauge for 1.1/4x20 Right Hand (2A): Calibrated to ensure the thread is within tolerance for UN right-hand threads, delivering fast, reliable checks with minimal effort.
  • Minimum material condition verification: Checks the minimum material condition of the part, ensuring it sits within the lower limit of the allowable size to prevent undersize/over-limit issues.
  • Designed for reliable, repeatable QC: Built to deliver consistent results across inspections, helping you maintain quality across batches with fewer measurement errors.

The Truthread UN NoGo gauge makes threaded part inspection straightforward and dependable. With a dedicated size and precise calibration for UN threads, you’ll speed up quality checks, reduce downtime, and improve consistency in fits across assemblies. Use it on the shop floor or in the QC lab to quickly confirm parts meet the lower-limit requirement and stay within the maximum size expectations, enabling smoother production and higher confidence in every part you ship.

Part Numbers

Protool Part Number
PRO2100281
Brand
Truthread
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: Truthread Thread Ring Gauge's (NoGo) - UN - Right Hand - 2A

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You are viewing PRO2100281. Click any other SKU to view its full details.

Product SKUThread FormSizePitchPriceStock Order
PRO2100203 UNCNo.440£80.14 Out of Stock
PRO2100204 UNFNo.448£80.14 In Stock
PRO2100205 UNCNo.540£80.14 In Stock
PRO2100206 UNFNo.544£80.14 In Stock
PRO2100207 UNCNo.632£62.96 In Stock
PRO2100208 UNFNo.640£62.96 In Stock
PRO2100209 UNCNo.832£62.96 Out of Stock
PRO2100210 UNFNo.836£62.96 In Stock
PRO2100211 UNCNo.1024£62.96 Out of Stock
PRO2100212 UNFNo.1032£62.96 Out of Stock
PRO2100213 UNCNo.1224£62.96 In Stock
PRO2100214 UNFNo.1228£62.96 In Stock
PRO2100215 UNEFNo.1232£91.58 In Stock
PRO2100216 UNC1/420£62.96 In Stock
PRO2100217 UNF1/428£62.96 In Stock
PRO2100218 UNEF1/432£91.58 Out of Stock
PRO2100219 UNC5/1618£62.96 In Stock
PRO2100220 UNF5/1624£62.96 Out of Stock
PRO2100221 UNEF5/1632£91.58 In Stock
PRO2100222 UNC3/816£62.96 In Stock
PRO2100223 UNF3/824£62.96 In Stock
PRO2100224 UEF3/832£91.58 In Stock
PRO2100225 UNC7/1614£62.96 Out of Stock
PRO2100226 UNF7/1620£62.96 Out of Stock
PRO2100227 UNEF7/1628£91.58 Out of Stock
PRO2100228 UNC1/213£62.96 In Stock
PRO2100229 UNF1/220£62.96 Out of Stock
PRO2100230 UNEF1/228£91.58 Out of Stock
PRO2100231 UNC9/1612£85.86 In Stock
PRO2100232 UNF9/1618£68.69 Out of Stock
PRO2100233 UN9/1620£114.48 Out of Stock
PRO2100234 UNEF9/1624£120.20 In Stock
PRO2100235 UNC5/811£85.86 In Stock
PRO2100236 UNF5/818£68.69 Out of Stock
PRO2100237 UN5/820£114.48 Out of Stock
PRO2100238 UNEF5/824£120.20 In Stock
PRO2100239 UN11/1612£114.48 In Stock
PRO2100240 UN11/1616£114.48 In Stock
PRO2100241 UN11/1620£120.20 In Stock
PRO2100242 UNEF11/1624£120.20 In Stock
PRO2100243 UNC3/410£114.48 In Stock
PRO2100244 UN3/412£114.48 In Stock
PRO2100245 UNF3/416£85.86 In Stock
PRO2100246 UNEF3/420£120.20 Out of Stock
PRO2100247 UN13/1612£137.38 In Stock
PRO2100248 UN13/1616£137.38 In Stock
PRO2100249 UNEF13/1620£137.38 Out of Stock
PRO2100250 UNEF13/1624£143.10 Out of Stock
PRO2100251 UNC7/89£137.38 Out of Stock
PRO2100252 UN7/812£128.79 In Stock
PRO2100253 UNF7/814£85.86 Out of Stock
PRO2100254 UN7/816£128.79 In Stock
PRO2100255 UNEF7/820£128.79 In Stock
PRO2100256 UN15/1612£137.38 In Stock
PRO2100257 UN15/1616£137.38 Out of Stock
PRO2100258 UNEF15/1620£137.38 In Stock
PRO2100259 UNC18£160.27 In Stock
PRO2100260 UNF112£128.79 In Stock
PRO2100261 UN114£128.79 Out of Stock
PRO2100262 UN116£128.79 In Stock
PRO2100263 UNEF120£128.79 In Stock
PRO2100264 UNC1.1/168£214.65 Out of Stock
PRO2100265 UNF1.1/1612£137.38 Out of Stock
PRO2100266 UN1.1/1616£137.38 In Stock
PRO2100267 UNEF1.1/1618£214.65 Out of Stock
PRO2100268 UNC1.1/87£214.65 Out of Stock
PRO2100269 UNF1.1/812£128.79 In Stock
PRO2100270 UN1.1/816£128.79 Out of Stock
PRO2100271 UNEF1.1/818£214.65 Out of Stock
PRO2100272 UN1.3/168£214.65 Out of Stock
PRO2100273 UN1.3/1612£137.38 In Stock
PRO2100274 UN1.3/1616£137.38 In Stock
PRO2100275 UNEF1.3/1618£214.65 Out of Stock
PRO2100276 UNC1.1/47£214.65 Out of Stock
PRO2100277 UN1.1/48£214.65 Out of Stock
PRO2100278 UNF1.1/412£128.79 Out of Stock
PRO2100279 UN1.1/416£128.79 Out of Stock
PRO2100280 UNEF1.1/418£214.65 Out of Stock
PRO2100281 ViewingUN1.1/420£214.65 Out of Stock
PRO2100282 UN1.5/168£214.65 Out of Stock
PRO2100283 UNF1.5/1612£137.38 Out of Stock
PRO2100284 UN1.5/1616£137.38 In Stock
PRO2100285 UNEF1.5/1618£214.65 Out of Stock
PRO2100286 UN1.5/1620£214.65 Out of Stock
PRO2100287 UNC1.3/86£228.96 Out of Stock
PRO2100288 UN1.3/88£214.65 In Stock
PRO2100289 UNF1.3/812£137.38 Out of Stock
PRO2100290 UN1.3/816£137.38 In Stock
PRO2100291 UNEF1.3/818£214.65 Out of Stock
PRO2100292 UN1.3/820£214.65 Out of Stock
PRO2100293 UN1.3/86£228.96 Out of Stock
PRO2100294 UN1.3/88£214.65 Out of Stock
PRO2100295 UN1.7/1612£137.38 In Stock
PRO2100296 UNEF1.7/1618£214.65 Out of Stock
PRO2100297 UN1.7/1620£214.65 Out of Stock
PRO2100298 UNC1.1/26£228.96 Out of Stock
PRO2100299 UN1.1/28£214.65 In Stock
PRO2100300 UNF1.1/212£137.38 Out of Stock
PRO2100301 UN1.1/216£137.38 In Stock
PRO2100302 UNEF1.1/218£214.65 Out of Stock
PRO2100303 UN1.1/220£214.65 Out of Stock

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