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

Truthread Thread Ring Gauge (GO) - UNF - Right Hand - 2A - 7/16x20
| Thead Form | UNF |
| Size | 7/16 |
| Pitch | 20 |
| Gauge Type | Ring Gauge (GO) |
Learn more about Klarna
Compatible certification
The ones our customers buy most.Description
The Truthread Thread Ring Gauge (GO) for UNF 7/16x20, Right Hand, 2A, is a precision tool designed to quickly verify external thread sizes on cylindrical parts. Built for manufacturing environments, it helps engineers, quality teams, and shop floor staff confirm parts meet exact UNF 7/16x20 specifications, reducing rework and scrap.
Crafted from high-quality steel, this GO ring gauge delivers durability and long service life in busy production settings. The knurled outer edge provides a secure grip for fast, repeatable measurements, even when wearing gloves, making it reliable for daily inspection tasks.
- Exact UNF 7/16x20 GO threading size: Precisely tuned for reliable go/no-go checks on external threads, helping you confirm parts meet the exact spec on first use.
- Durable steel construction with knurled edge: Built to endure busy shop floors; the rugged design and grip-friendly surface support repeated measurements over time.
- Fast, repeatable checks for consistent quality: The precision-machined ring engages smoothly with the threaded part, enabling quick pass/fail decisions and reducing inspection time on high-volume runs.
This gauge streamlines your inspection workflow by delivering repeatable, accurate results that support tighter quality control and more confident production planning. With its robust construction and clear GO indication, you can verify thread fit quickly, minimize downtime, and achieve consistent results across batches.
Part Numbers
- Protool Part Number
- PRO2100125
- 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 PRO2100125. 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 | 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 Viewing | 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 |
No products match your filters.



