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Truthread Thread Ring Gauge (GO) - UN - Right Hand - 2A - 1.3/8x20
| Thead Form | UN |
| Size | 1.3/8 |
| Pitch | 20 |
| Gauge Type | Ring Gauge (GO) |
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Description
The Truthread Ring Gauges GO are precision tools designed to accurately measure the size of cylindrical parts. They are ideal for manufacturing environments—from engineering shops to quality control labs—where dependable measurements ensure consistent product quality. Crafted from high-quality steel, these gauges are built for durability and long service life, even in busy shop floors.
This GO gauge is configured for UN right-hand threads, specifically 1-3/8 x 20, class 2A. Built to withstand daily use, its steel construction delivers lasting accuracy while maintaining a smooth, reliable feel through repeated checks.
- Exact UN thread size (1-3/8 x 20 UN, Right Hand, 2A): Enables quick, confident verification of external thread dimensions on cylindrical parts, speeding inspections and reducing guesswork.
- Rugged steel construction: Delivers long tool life and dependable performance in busy production environments, resisting wear over time.
- Designed for consistent, repeatable results: Supports stable measurements across operators and shifts, contributing to reliable quality control and fewer retests.
Used in standard inspection routines, this gauge helps you confirm threaded parts quickly, accurately, and with repeatable results. Its durable build and precise specifications support efficient workflows, enabling you to maintain consistent quality across batches and streamline your manufacturing processes.
Part Numbers
- Protool Part Number
- PRO2100191
- Brand
- Truthread
- Category
- Gauge
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.
Full Range: Truthread Thread Ring Gauge's (GO) - UN - Right Hand - 2A
View full collection →You are viewing PRO2100191. Click any other SKU to view its full details.
| Product SKU | Thread Form | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|---|
| PRO2100168 | UNF | 1.1/8 | 12 | £128.79 | Out of Stock | |
| PRO2100128 | UNF | 1/2 | 20 | £62.96 | Out of Stock | |
| PRO2100121 | UNC | 3/8 | 16 | £62.96 | Out of Stock | |
| PRO2100119 | UNF | 5/16 | 24 | £62.96 | Out of Stock | |
| PRO2100116 | UNF | 1/4 | 28 | £62.96 | In Stock | |
| PRO2100200 | UN | 1.1/2 | 16 | £137.38 | Out of Stock | |
| PRO2100198 | UN | 1.1/2 | 8 | £214.65 | In Stock | |
| PRO2100179 | UNEF | 1.1/4 | 18 | £214.65 | Out of Stock | |
| PRO2100159 | UNF | 1 | 12 | £128.79 | Out of Stock | |
| PRO2100154 | UNEF | 7/8 | 20 | £128.79 | In Stock | |
| PRO2100152 | UNF | 7/8 | 14 | £85.86 | Out of Stock | |
| PRO2100147 | UN | 13/16 | 16 | £137.38 | Out of Stock | |
| PRO2100145 | UNEF | 3/4 | 20 | £120.20 | Out of Stock | |
| PRO2100144 | UNF | 3/4 | 16 | £85.86 | Out of Stock | |
| PRO2100138 | UN | 11/16 | 12 | £114.48 | Out of Stock | |
| PRO2100131 | UNF | 9/16 | 18 | £68.69 | In Stock | |
| PRO2100127 | UNC | 1/2 | 13 | £62.96 | In Stock | |
| PRO2100122 | UNF | 3/8 | 24 | £62.96 | Out of Stock | |
| PRO2100108 | UNC | No.8 | 32 | £62.96 | Out of Stock | |
| PRO2100106 | UNC | No.6 | 32 | £62.96 | In Stock | |
| PRO2100202 | UN | 1.1/2 | 20 | £214.65 | Out of Stock | |
| PRO2100201 | UNEF | 1.1/2 | 18 | £214.65 | In Stock | |
| PRO2100199 | UNF | 1.1/2 | 12 | £137.38 | Out of Stock | |
| PRO2100197 | UNC | 1.1/2 | 6 | £228.96 | In Stock | |
| PRO2100196 | UN | 1.7/16 | 20 | £214.65 | In Stock | |
| PRO2100195 | UNEF | 1.7/16 | 18 | £214.65 | In Stock | |
| PRO2100194 | UN | 1.7/16 | 12 | £137.38 | Out of Stock | |
| PRO2100193 | UN | 1.3/8 | 8 | £214.65 | Out of Stock | |
| PRO2100192 | UN | 1.3/8 | 6 | £228.96 | Out of Stock | |
| PRO2100191 Viewing | UN | 1.3/8 | 20 | £214.65 | In Stock | |
| PRO2100189 | UN | 1.3/8 | 16 | £137.38 | In Stock | |
| PRO2100190 | UNEF | 1.3/8 | 18 | £214.65 | In Stock | |
| PRO2100188 | UNF | 1.3/8 | 12 | £137.38 | In Stock | |
| PRO2100187 | UN | 1.3/8 | 8 | £214.65 | Out of Stock | |
| PRO2100186 | UNC | 1.3/8 | 6 | £228.96 | In Stock | |
| PRO2100185 | UN | 1.5/16 | 20 | £214.65 | In Stock | |
| PRO2100184 | UNEF | 1.5/16 | 18 | £214.65 | In Stock | |
| PRO2100183 | UN | 1.5/16 | 16 | £137.38 | In Stock | |
| PRO2100182 | UNF | 1.5/16 | 12 | £137.38 | Out of Stock | |
| PRO2100181 | UN | 1.5/16 | 8 | £214.65 | In Stock | |
| PRO2100180 | UN | 1.1/4 | 20 | £214.65 | Out of Stock | |
| PRO2100178 | UN | 1.1/4 | 16 | £128.79 | Out of Stock | |
| PRO2100177 | UNF | 1.1/4 | 12 | £128.79 | Out of Stock | |
| PRO2100176 | UN | 1.1/4 | 8 | £214.65 | In Stock | |
| PRO2100175 | UNC | 1.1/4 | 7 | £214.65 | In Stock | |
| PRO2100174 | UNEF | 1.3/16 | 18 | £214.65 | In Stock | |
| PRO2100173 | UN | 1.3/16 | 16 | £137.38 | In Stock | |
| PRO2100172 | UN | 1.3/16 | 12 | £137.38 | In Stock | |
| PRO2100171 | UN | 1.3/16 | 8 | £214.65 | In Stock | |
| PRO2100170 | UNEF | 1.1/8 | 18 | £214.65 | In Stock | |
| PRO2100169 | UN | 1.1/8 | 16 | £128.79 | Out of Stock | |
| PRO2100167 | UNC | 1.1/8 | 7 | £214.65 | In Stock | |
| PRO2100166 | UNEF | 1.1/16 | 18 | £214.65 | In Stock | |
| PRO2100165 | UN | 1.1/16 | 16 | £137.38 | In Stock | |
| PRO2100164 | UNF | 1.1/16 | 12 | £137.38 | Out of Stock | |
| PRO2100163 | UNC | 1.1/16 | 8 | £214.65 | Out of Stock | |
| PRO2100162 | UNEF | 1 | 20 | £128.79 | Out of Stock | |
| PRO2100161 | UN | 1 | 16 | £128.79 | In Stock | |
| PRO2100160 | UN | 1 | 14 | £128.79 | Out of Stock | |
| PRO2100158 | UNC | 1 | 8 | £160.27 | In Stock | |
| PRO2100157 | UNEF | 15/16 | 20 | £137.38 | Out of Stock | |
| PRO2100156 | UN | 15/16 | 16 | £137.38 | Out of Stock | |
| PRO2100155 | UN | 15/16 | 12 | £137.38 | Out of Stock | |
| PRO2100153 | UN | 7/8 | 16 | £128.79 | Out of Stock | |
| PRO2100151 | UN | 7/8 | 12 | £128.79 | Out of Stock | |
| PRO2100150 | UNC | 7/8 | 9 | £137.38 | Out of Stock | |
| PRO2100149 | UNEF | 13/16 | 24 | £143.10 | Out of Stock | |
| PRO2100148 | UNEF | 13/16 | 20 | £137.38 | Out of Stock | |
| PRO2100146 | UN | 13/16 | 12 | £137.38 | In Stock | |
| PRO2100143 | UN | 3/4 | 12 | £114.48 | In Stock | |
| PRO2100142 | UNC | 3/4 | 10 | £114.48 | Out of Stock | |
| PRO2100141 | UNEF | 11/16 | 24 | £120.20 | Out of Stock | |
| PRO2100140 | UN | 11/16 | 20 | £120.20 | Out of Stock | |
| PRO2100139 | UN | 11/16 | 16 | £114.48 | In Stock | |
| PRO2100137 | UNEF | 5/8 | 24 | £120.20 | Out of Stock | |
| PRO2100136 | UN | 5/8 | 20 | £114.48 | Out of Stock | |
| PRO2100135 | UNF | 5/8 | 18 | £68.69 | Out of Stock | |
| PRO2100134 | UNC | 5/8 | 11 | £85.86 | In Stock | |
| PRO2100133 | UNEF | 9/16 | 24 | £120.20 | In Stock | |
| PRO2100132 | UN | 9/16 | 20 | £114.48 | In Stock | |
| PRO2100130 | UNC | 9/16 | 12 | £85.86 | In Stock | |
| PRO2100129 | UNEF | 1/2 | 28 | £91.58 | Out of Stock | |
| PRO2100126 | UNEF | 7/16 | 28 | £91.58 | Out of Stock | |
| PRO2100125 | UNF | 7/16 | 20 | £62.96 | Out of Stock | |
| PRO2100124 | UNC | 7/16 | 14 | £62.96 | Out of Stock | |
| PRO2100123 | UNEF | 3/8 | 32 | £91.58 | Out of Stock | |
| PRO2100120 | UNEF | 5/16 | 32 | £91.58 | In Stock | |
| PRO2100118 | UNC | 5/16 | 18 | £62.96 | Out of Stock | |
| PRO2100117 | UNEF | 1/4 | 32 | £91.58 | Out of Stock | |
| PRO2100115 | UNC | 1/4 | 20 | £62.96 | Out of Stock | |
| PRO2100114 | UNEF | No.12 | 32 | £91.58 | In Stock | |
| PRO2100113 | UNF | No.12 | 28 | £62.96 | In Stock | |
| PRO2100112 | UNC | No.12 | 24 | £62.96 | In Stock | |
| PRO2100111 | UNF | No.10 | 32 | £62.96 | In Stock | |
| PRO2100110 | UNC | No.10 | 24 | £62.96 | Out of Stock | |
| PRO2100109 | UNF | No.8 | 36 | £62.96 | In Stock | |
| PRO2100107 | UNF | No.6 | 40 | £62.96 | Out of Stock | |
| PRO2100105 | UNF | No.5 | 44 | £80.14 | In Stock | |
| PRO2100104 | UNC | No.5 | 40 | £80.14 | Out of Stock | |
| PRO2100103 | UNF | No.4 | 48 | £80.14 | In Stock | |
| PRO2100102 | UNC | No.4 | 40 | £80.14 | In Stock |
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