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

VCOIL Plug Gauge (D/E) - UNF (STI) - Heli Coil Gauge - Right Hand - 2B - No. 6 x 40
| Thread Form | UNF (STI) |
| Size | No. 6 |
| Pitch | 40 |
| Gauge Type | Plug Gauge (D/E) |
Learn more about Klarna
Compatible certification
The ones our customers buy most.Description
The VCOIL Plug Gauge (D/E) is a right-hand UNF (STI) Helicoil gauge crafted for precise go/no-go thread verification at No. 6 x 40 (2B). It adheres to ANSI/ASME thread standards to deliver consistent inspection results on threaded inserts and internal threads.
- Go/No-Go design: A combined thread limit plug gauge that includes both go and no-go ends to verify thread accuracy against standard limits.
- Scrap indicator: Scrap side is clearly marked with a red ring for quick visual assessment.
- Thread system: UNF (STI) threading specification for right-hand threads.
- Handedness: Right Hand orientation for standard inspection procedures.
- No. 6 x 40 / 2B: Specific size and plug gauge grade inline with common internal thread references.
- Standards: Manufactured and assessed in accordance with ANSI/ASME thread standards.
- Reference temperature: Parts and gauges are specified with a 20°C reference for consistency across measurements.
The Go end should screw into the threaded feature by hand without excessive force to meet the specification, while the No-Go end must not be able to screw in more than two full turns under normal use. This ensures reliable acceptance or scrap decisions, reducing rework and ensuring consistent quality in production and maintenance environments.
Part Numbers
- Protool Part Number
- TC-19824
- Brand
- VCOIL
- 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: VCOIL Plug Gauges UNF (STI)
View full collection →You are viewing TC-19824. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| TC-19823 | No. 4 | 48 | £102.03 | In Stock | |
| TC-19824 Viewing | No. 6 | 40 | £102.03 | In Stock | |
| TC-19825 | No. 8 | 36 | £98.05 | In Stock | |
| TC-19826 | No. 10 | 32 | £98.05 | 7 days | |
| TC-19827 | 1/4 | 28 | £95.40 | 7 days | |
| TC-19828 | 5/16 | 24 | £99.38 | 7 days | |
| TC-19829 | 3/8 | 24 | £103.35 | 7 days | |
| TC-19830 | 7/16 | 20 | £108.65 | In Stock | |
| TC-19831 | 1/2 | 20 | £113.95 | 7 days | |
| TC-19832 | 9/16 | 18 | £123.23 | In Stock | |
| TC-19833 | 5/8 | 18 | £137.80 | In Stock | |
| TC-19834 | 3/4 | 16 | £169.60 | 7 days | |
| TC-19835 | 7/8 | 14 | £184.18 | 7 days | |
| TC-19836 | 1 | 12 | £221.28 | 7 days | |
| TC-19837 | 1 | 14 | £221.28 | 7 days | |
| TC-19838 | 1.1/8 | 12 | £221.28 | 7 days | |
| TC-19839 | 1.1/4 | 12 | £257.05 | 7 days | |
| TC-19840 | 1.3/8 | 12 | £166.95 | 7 days | |
| TC-19841 | 1.3/8 | 12 | £166.95 | 7 days | |
| TC-19842 | 1.1/2 | 12 | £194.78 | 7 days | |
| TC-19843 | 1.1/2 | 12 | £194.78 | 7 days | |
| TC-19923 | No. 4 | 48 | £121.90 | 7 days | |
| TC-19924 | No. 6 | 40 | £121.90 | 7 days | |
| TC-19925 | No. 8 | 36 | £116.60 | 7 days | |
| TC-19926 | No. 10 | 32 | £116.60 | 7 days | |
| TC-19927 | 1/4 | 28 | £115.28 | 7 days | |
| TC-19928 | 5/16 | 24 | £119.25 | 7 days | |
| TC-19929 | 3/8 | 24 | £123.23 | 7 days | |
| TC-19930 | 7/16 | 20 | £129.85 | 7 days | |
| TC-19931 | 1/2 | 20 | £136.48 | 7 days | |
| TC-19932 | 9/16 | 18 | £148.40 | 7 days | |
| TC-19933 | 5/8 | 18 | £165.63 | 7 days | |
| TC-19934 | 3/4 | 16 | £202.73 | 7 days | |
| TC-19935 | 7/8 | 14 | £221.28 | 7 days | |
| TC-19936 | 1 | 12 | £265.00 | 7 days | |
| TC-19937 | 1 | 14 | £265.00 | 7 days | |
| TC-19938 | 1.1/8 | 12 | £265.00 | 7 days | |
| TC-19939 | 1.1/4 | 12 | £308.73 | 7 days | |
| TC-19940 | 1.3/8 | 12 | £201.40 | 7 days | |
| TC-19941 | 1.3/8 | 12 | £201.40 | 7 days | |
| TC-19942 | 1.1/2 | 12 | £234.53 | 7 days | |
| TC-19943 | 1.1/2 | 12 | £234.53 | 7 days |
No products match your filters.



