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Truthread Plug Thread Gauge (D/E) - UNEF - Right Hand - 2B - 1.3/8x18
| Thead Form | UNEF |
| Size | 1.3/8 |
| Pitch | 18 |
| Gauge Type | Plug Thread Guage (D/E) |
| Thead Direction | Right Hand |
| Tolerance | 2B |
Learn more about Klarna
The Truthread Plug Thread Gauge (D/E) - UNEF - Right Hand - 2B - 1.3/8x18 is a precision internal-thread gauge designed to verify threaded holes against the Unified National Extra Fine standard. Built for the 1.375 inch diameter, 18 threads per inch size, this gauge helps ensure accurate checks for UNEF threads in right-handed holes. It is a reliable tool for engineers, inspectors, machinists, and maintenance professionals who need repeatable, dependable thread measurements.
Its tapered design with a practical handle allows easy insertion into holes, enabling quick, consistent assessments of thread quality. The gauge supports fast pass/fail decisions on fit and finish, helping you identify slightly undersized or damaged threads before assembly or production steps. The result is more efficient inspections and reduced downtime across workshops and shops.
- UNEF thread size and standard: Directly calibrated for Unified National Extra Fine threads at 1.375 in diameter and 18 TPI, enabling precise checks for UNEF applications.
- Right-hand, 2B tolerance: Optimized for right-handed threads with a 2B tolerance class to deliver dependable, repeatable measurements across parts.
- Tapered probe with easy-grip handle: The tapered design and handle permit smooth insertion and fast, consistent assessments of thread fit, reducing inspection time.
With the Truthread plug gauge, you gain confidence that threaded holes meet specification, reduce rework, and streamline quality control workflows. Its durable construction maintains accuracy over time, making it a reliable companion for routine inspections, calibration checks, and production-line verification alike.
| Thead Form | UNEF |
| Size | 1.3/8 |
| Pitch | 18 |
| Gauge Type | Plug Thread Guage (D/E) |
| Thead Direction | Right Hand |
| Tolerance | 2B |
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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.
Full Range: Truthread Plug Thread Guage's (D/E) - UN - Right Hand - 2B
View full collection →You are viewing PRO2100089. Click any other SKU to view its full details.
| Product SKU | Thread Form | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|---|
| PRO2100001 | UNC | No. 4 | 40 | £62.96 | In Stock | |
| PRO2100002 | UNF | No. 4 | 48 | £62.96 | In Stock | |
| PRO2100003 | UNC | No. 5 | 40 | £62.96 | In Stock | |
| PRO2100004 | UNF | No. 5 | 44 | £62.96 | Out of Stock | |
| PRO2100005 | UNC | No. 6 | 32 | £51.52 | In Stock | |
| PRO2100006 | UNF | No. 6 | 40 | £51.52 | In Stock | |
| PRO2100007 | UNC | No. 8 | 32 | £51.52 | Out of Stock | |
| PRO2100008 | UNF | No. 8 | 36 | £51.52 | In Stock | |
| PRO2100009 | UNC | No. 10 | 24 | £51.52 | Out of Stock | |
| PRO2100010 | UNF | No. 10 | 32 | £51.52 | In Stock | |
| PRO2100011 | UNC | No. 12 | 24 | £51.52 | In Stock | |
| PRO2100012 | UNF | No. 12 | 28 | £51.52 | In Stock | |
| PRO2100013 | UNEF | No. 12 | 32 | £62.96 | In Stock | |
| PRO2100014 | UNC | 1/4 | 20 | £51.52 | Out of Stock | |
| PRO2100015 | UNF | 1/4 | 28 | £51.52 | In Stock | |
| PRO2100016 | UNEF | 1/4 | 32 | £62.96 | In Stock | |
| PRO2100017 | UNC | 5/16 | 18 | £51.52 | In Stock | |
| PRO2100018 | UNF | 5/16 | 24 | £51.52 | Out of Stock | |
| PRO2100019 | UNEF | 5/16 | 32 | £62.96 | In Stock | |
| PRO2100020 | UNC | 3/8 | 16 | £51.52 | In Stock | |
| PRO2100021 | UNF | 3/8 | 24 | £51.52 | Out of Stock | |
| PRO2100022 | UNEF | 3/8 | 32 | £62.96 | In Stock | |
| PRO2100023 | UNC | 7/16 | 14 | £51.52 | Out of Stock | |
| PRO2100024 | UNF | 7/16 | 20 | £51.52 | Out of Stock | |
| PRO2100025 | UNEF | 7/16 | 28 | £62.96 | In Stock | |
| PRO2100026 | UNC | 1/2 | 13 | £51.52 | In Stock | |
| PRO2100027 | UNF | 1/2 | 20 | £51.52 | Out of Stock | |
| PRO2100028 | UNEF | 1/2 | 28 | £62.96 | Out of Stock | |
| PRO2100029 | UNC | 9/16 | 12 | £68.69 | In Stock | |
| PRO2100030 | UNF | 9/16 | 18 | £57.24 | Out of Stock | |
| PRO2100031 | UN | 9/16 | 20 | £80.14 | Out of Stock | |
| PRO2100032 | UNEF | 9/16 | 24 | £91.58 | In Stock | |
| PRO2100033 | UNC | 5/8 | 11 | £68.69 | Out of Stock | |
| PRO2100034 | UNF | 5/8 | 18 | £57.24 | Out of Stock | |
| PRO2100035 | UN | 5/8 | 20 | £80.14 | Out of Stock | |
| PRO2100036 | UNEF | 5/8 | 24 | £91.58 | In Stock | |
| PRO2100037 | UN | 11/16 | 12 | £85.86 | Out of Stock | |
| PRO2100038 | UN | 11/16 | 16 | £85.86 | Out of Stock | |
| PRO2100039 | UN | 11/16 | 20 | £91.58 | In Stock | |
| PRO2100040 | UNEF | 11/16 | 24 | £91.58 | Out of Stock | |
| PRO2100041 | UNC | 3/4 | 10 | £85.86 | Out of Stock | |
| PRO2100042 | UN | 3/4 | 12 | £85.86 | In Stock | |
| PRO2100043 | UNF | 3/4 | 16 | £68.69 | Out of Stock | |
| PRO2100044 | UNEF | 3/4 | 20 | £91.58 | Out of Stock | |
| PRO2100045 | UN | 13/16 | 12 | £103.03 | Out of Stock | |
| PRO2100046 | UN | 13/16 | 16 | £103.03 | In Stock | |
| PRO2100047 | UNEF | 13/16 | 20 | £103.03 | Out of Stock | |
| PRO2100048 | UNEF | 13/16 | 24 | £114.48 | Out of Stock | |
| PRO2100049 | UNC | 7/8 | 9 | £103.03 | In Stock | |
| PRO2100050 | UN | 7/8 | 12 | £91.58 | Out of Stock | |
| PRO2100051 | UNF | 7/8 | 14 | £68.69 | Out of Stock | |
| PRO2100052 | UN | 7/8 | 16 | £97.31 | In Stock | |
| PRO2100053 | UNEF | 7/8 | 20 | £97.31 | Out of Stock | |
| PRO2100054 | UN | 15/16 | 12 | £103.03 | In Stock | |
| PRO2100055 | UN | 15/16 | 16 | £103.03 | Out of Stock | |
| PRO2100056 | UNEF | 15/16 | 20 | £103.03 | In Stock | |
| PRO2100057 | UNC | 1 | 8 | £120.20 | Out of Stock | |
| PRO2100058 | UNF | 1 | 12 | £97.31 | In Stock | |
| PRO2100059 | UN | 1 | 14 | £97.31 | Out of Stock | |
| PRO2100060 | UN | 1 | 16 | £97.31 | Out of Stock | |
| PRO2100061 | UNEF | 1 | 20 | £97.31 | Out of Stock | |
| PRO2100062 | UNC | 1.1/16 | 8 | £143.10 | Out of Stock | |
| PRO2100063 | UNF | 1.1/16 | 12 | £103.03 | Out of Stock | |
| PRO2100064 | UN | 1.1/16 | 16 | £103.03 | In Stock | |
| PRO2100065 | UNEF | 1.1/16 | 18 | £137.38 | In Stock | |
| PRO2100066 | UNC | 1.1/8 | 7 | £143.10 | In Stock | |
| PRO2100067 | UNF | 1.1/8 | 12 | £97.31 | Out of Stock | |
| PRO2100068 | UN | 1.1/8 | 16 | £97.31 | In Stock | |
| PRO2100069 | UNEF | 1.1/8 | 18 | £137.38 | In Stock | |
| PRO2100070 | UN | 1.3/16 | 8 | £143.10 | In Stock | |
| PRO2100071 | UN | 1.3/16 | 12 | £103.03 | Out of Stock | |
| PRO2100072 | UN | 1.3/16 | 16 | £103.03 | In Stock | |
| PRO2100073 | UNEF | 1.3/16 | 18 | £137.38 | In Stock | |
| PRO2100074 | UNC | 1.1/4 | 7 | £143.10 | In Stock | |
| PRO2100075 | UN | 1.1/4 | 8 | £143.10 | Out of Stock | |
| PRO2100076 | UNF | 1.1/4 | 12 | £97.31 | Out of Stock | |
| PRO2100077 | UN | 1.1/4 | 16 | £97.31 | Out of Stock | |
| PRO2100078 | UNEF | 1.1/4 | 18 | £137.38 | In Stock | |
| PRO2100079 | UN | 1.1/4 | 20 | £137.38 | In Stock | |
| PRO2100080 | UN | 1.5/16 | 8 | £143.10 | In Stock | |
| PRO2100081 | UNF | 1.5/16 | 12 | £103.03 | Out of Stock | |
| PRO2100082 | UN | 1.5/16 | 16 | £103.03 | In Stock | |
| PRO2100083 | UNEF | 1.5/16 | 18 | £137.38 | Out of Stock | |
| PRO2100084 | UN | 1.5/16 | 20 | £137.38 | In Stock | |
| PRO2100085 | UNC | 1.3/8 | 6 | £157.41 | In Stock | |
| PRO2100086 | UN | 1.3/8 | 8 | £143.10 | Out of Stock | |
| PRO2100087 | UNF | 1.3/8 | 12 | £103.03 | Out of Stock | |
| PRO2100088 | UN | 1.3/8 | 16 | £103.03 | In Stock | |
| PRO2100089 Viewing | UNEF | 1.3/8 | 18 | £137.38 | Out of Stock | |
| PRO2100090 | UN | 1.3/8 | 20 | £137.38 | Out of Stock | |
| PRO2100091 | UN | 1.3/8 | 6 | £157.41 | Out of Stock | |
| PRO2100092 | UN | 1.3/8 | 8 | £143.10 | In Stock | |
| PRO2100093 | UN | 1.7/16 | 12 | £103.03 | Out of Stock | |
| PRO2100094 | UNEF | 1.7/16 | 18 | £137.38 | In Stock | |
| PRO2100095 | UN | 1.7/16 | 20 | £137.38 | In Stock | |
| PRO2100096 | UNC | 1.1/2 | 6 | £157.41 | Out of Stock | |
| PRO2100097 | UN | 1.1/2 | 8 | £143.10 | In Stock | |
| PRO2100098 | UNF | 1.1/2 | 12 | £103.03 | Out of Stock | |
| PRO2100099 | UN | 1.1/2 | 16 | £103.03 | In Stock | |
| PRO2100100 | UNEF | 1.1/2 | 18 | £137.38 | In Stock | |
| PRO2100101 | UN | 1.1/2 | 20 | £137.38 | In Stock |
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