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Truthread Plug Thread Gauge (D/E) - UNC - Right Hand - 2B - No. 4x40
| Thead Form | UNC |
| Size | No. 4 |
| Pitch | 40 |
| Gauge Type | Plug Thread Guage (D/E) |
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Description
The Truthread Plug Gauge is a precision instrument designed to measure the internal threads of threaded holes. Built to conform to the Unified National Coarse (UNC), Unified National Fine (UNF), and Unified National Extra Fine (UNEF) thread standards, these gauges deliver quick, reliable assessments of thread quality for a wide range of applications.
Designed for Right-Hand UNC threads in size No. 4x40 with a 2B tolerance, this plug gauge features a tapered tip and a sturdy handle for easy insertion and consistent readings. Use it to verify fit and identify undersized or damaged threads, helping you ensure parts assemble correctly the first time.
- Universal UNC/UNF/UNEF compatibility: Measures internal threads across UNC, UNF, and UNEF standards for versatile use in a single gauge.
- Tapered tip with easy-grip handle: Smooth insertion into threaded holes and quick, repeatable checks without damaging the threads.
- High-precision, tight tolerances: Delivers consistent, reliable readings that reduce rework and improve quality control; supports calibration to maintain accuracy.
With the Truthread Plug Gauge, you gain a dependable tool that streamlines inspection, speeds up setup, and helps you deliver accurately threaded parts with every batch. Its precise sizing and ergonomic design reduce guesswork, shorten downtime, and support consistent results across jobs for shops, manufacturers, and maintenance teams alike.
Part Numbers
- Protool Part Number
- PRO2100001
- 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 Plug Thread Guage's (D/E) - UN - Right Hand - 2B
View full collection →You are viewing PRO2100001. Click any other SKU to view its full details.
| Product SKU | Thread Form | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|---|
| PRO2100001 Viewing | 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 | 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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