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Asimeto Plug Thread Gauge (Go/NoGo) - Imperial - Right Hand - ASMEB1.20.1-2013 - 3/8 x 18
| Thread Form | NPT |
| Size | 3/8 |
| Pitch | 18 |
| Gauge Type | Plug Gauge (Go/NoGo) |
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Description
Asimeto Plug Thread Gauges (Go/NoGo) in Imperial sizes are precision tools for quality-control professionals who verify internal thread accuracy. This right-hand gauge is sized for 3/8 x 18 threads and aligns with ASMEB1.20.1-2013 standards, delivering reliable go/no-go results during inspection and assembly.
- Go/NoGo design: Separate go and no-go elements provide quick, decisive checks of thread depth and tolerance.
- Imperial size: 3/8 x 18 threads, right-hand orientation standard for common internal threads.
- Right-hand threading: Matches the most frequently used internal thread direction in machining and manufacturing.
- 3-step L3 design: Three distinct depth checks ensure comprehensive assessment of thread engagement and clearance.
- Standards compliant: Precisely aligned with ASMEB1.20.1-2013 internal thread specifications for reliable QC.
- Durable, production-ready construction: Built for repeated use in busy workshop environments while maintaining measurement integrity.
This gauge accelerates quality control by providing clear go/no-go results that help you catch undersized or oversized threads before parts move to the next stage. It’s ideal for machining shops, assembly lines, and quality labs where consistent, traceable internal-thread verification is essential. Use it to validate 3/8 x 18 threaded cavities, prevent misfits, and support efficient, repeatable inspections across shifts.
Part Numbers
- Protool Part Number
- 690-43-1
- Brand
- Asimeto
- 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: Asimeto Plug Thread Gauges (Go/NoGo) - Imperial - Right Hand - ASMEB1.20.1-2013
View full collection →You are viewing 690-43-1. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Middle Diameter Size | Gauge Tolerance | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| 690-40-1 | 1/16 | 27 | 0.28118 | ± 0.0002 | £79.43 | In Stock | |
| 690-41-1 | 1/8 | 27 | 0.37360 | ± 0.0002 | £84.51 | In Stock | |
| 690-42-1 | 1/4 | 18 | 0.49163 | ± 0.0002 | £97.07 | In Stock | |
| 690-43-1 Viewing | 3/8 | 18 | 0.62701 | ± 0.0002 | £108.00 | In Stock | |
| 690-44-1 | 1/2 | 14 | 0.77843 | ± 0.0002 | £121.68 | 4 weeks | |
| 690-45-1 | 3/4 | 14 | 0.98887 | ± 0.0002 | £137.75 | In Stock | |
| 690-46-1 | 1 | 11.5 | 1.23863 | ± 0.0003 | £160.83 | In Stock | |
| 690-47-1 | 1.1/4 | 11.5 | 1.58338 | ± 0.0003 | £225.41 | 4 weeks | |
| 690-48-1 | 1.1/2 | 11.5 | 1.82234 | ± 0.0003 | £254.75 | In Stock | |
| 690-49-1 | 2 | 11.5 | 2.29627 | ± 0.0003 | £272.75 | 4 weeks | |
| 690-50-1 | 2.1/2 | 8 | 2.76216 | ± 0.0004 | £289.17 | 4 weeks | |
| 690-51-1 | 3 | 8 | 3.38850 | ± 0.0004 | £320.09 | 4 weeks |
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