Please log in here to access all benefits, including promotional discounts and faster checkouts.
Asimeto Plug Thread Gauge (Go/NoGo) - Imperial - Right Hand - ASMEB1.20.1-2013 - 1/4 x 18
| Thread Form | NPT |
| Size | 1/4 |
| Pitch | 18 |
| Gauge Type | Plug Gauge (Go/NoGo) |
| Thread Direction | Right Hand |
| Tolerance | ASMEB1.20.1-2013 |
Learn more about Klarna
Asimeto Plug Thread Gauge (Go/NoGo) in imperial sizes is a precision instrument for verifying internal thread accuracy to ASMEB1.20.1-2013. Designed for quality-control teams in machining and manufacturing, this right-hand gauge provides clear go/no-go results for the 1/4 x 18 thread form.
- Size: Imperial 1/4 x 18 thread gauge, engineered for standard internal-thread checks.
- Go/NoGo design: Integrated go and no-go checks deliver quick, unambiguous acceptance testing of thread conformity.
- Three-step L3 design: A 3-step engagement scheme verifies thread depth and tolerance across key engagement points.
- Right-hand orientation: Configured for right-handed threads to align with common production geometries.
- ASMEB1.20.1-2013 compliant: Calibrated to the industry standard to support consistent quality-control documentation.
Using this gauge, technicians can quickly determine whether a part’s internal threads meet specification, reducing rework and assembly issues. The go/no-go approach provides fast pass/fail decisions, while the 3-step depth checks increase confidence that the entire threaded portion engages properly. Ideal for in-process inspection, final quality checks, and supplier qualification, this gauge helps ensure reliable thread performance in machining and manufacturing applications.
| Thread Form | NPT |
| Size | 1/4 |
| Pitch | 18 |
| Gauge Type | Plug Gauge (Go/NoGo) |
| Thread Direction | Right Hand |
| Tolerance | ASMEB1.20.1-2013 |
| Middle Diameter Size | 0.49163 |
| Gauge Tolerance | ± 0.0002 |
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 690-42-1. 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 | £74.85 | In Stock | |
| 690-41-1 | 1/8 | 27 | 0.37360 | ± 0.0002 | £79.64 | 4 weeks | |
| 690-42-1 Viewing | 1/4 | 18 | 0.49163 | ± 0.0002 | £91.44 | 4 weeks | |
| 690-43-1 | 3/8 | 18 | 0.62701 | ± 0.0002 | £101.76 | In Stock | |
| 690-44-1 | 1/2 | 14 | 0.77843 | ± 0.0002 | £114.66 | 4 weeks | |
| 690-45-1 | 3/4 | 14 | 0.98887 | ± 0.0002 | £129.78 | In Stock | |
| 690-46-1 | 1 | 11.5 | 1.23863 | ± 0.0003 | £151.54 | In Stock | |
| 690-47-1 | 1.1/4 | 11.5 | 1.58338 | ± 0.0003 | £212.37 | 4 weeks | |
| 690-48-1 | 1.1/2 | 11.5 | 1.82234 | ± 0.0003 | £240.02 | In Stock | |
| 690-49-1 | 2 | 11.5 | 2.29627 | ± 0.0003 | £256.98 | 4 weeks | |
| 690-50-1 | 2.1/2 | 8 | 2.76216 | ± 0.0004 | £272.46 | 4 weeks | |
| 690-51-1 | 3 | 8 | 3.38850 | ± 0.0004 | £301.59 | 4 weeks |
No products match your filters.
