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VCOIL Plug Gauge (D/E) - BSF (STI) - Heli Coil Gauge - Right Hand - Medium - 7/16 x 18
| Thread Form | BSF (STI) |
| Size | 7/16 |
| Pitch | 18 |
| Gauge Type | Plug Gauge (D/E) |
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The ones our customers buy most.Description
The VCOIL Plug Gauge is a precision go/no-go thread gauge designed for verification of 7/16 x 18 BSF (STI) threads in right-hand configurations. It helps technicians confirm that threads meet ANSI/ASME standards with reliable, repeatable results.
- Go/No-Go Thread Plug Gauge: Combines the go and no-go checks in a single tool to validate both admission and scrap conditions for threaded parts.
- ANSI/ASME Compliance: Manufactured and assessed to relevant ANSI standards for accurate thread verification against recognized specifications.
- Red Scrap Ring: Scrap side is clearly marked with a red ring for quick, at-a-glance inspection.
- Right-Hand Orientation: Specifically configured for right-hand threads to match common production and inspection setups.
- Size and Thread Details: Medium size, designed for 7/16 x 18 BSF (STI) thread applications as indicated in the product designation.
The gauge supports precise quality control by ensuring the go end threads into the part by hand with normal effort, while the scrap end should not thread in more than two turns without excessive force. This provides a clear pass/fail criterion aligned with standard thread specifications, with the reference temperature for parts and gauges set at 20°C to maintain measurement consistency in typical workshop environments.
Part Numbers
- Protool Part Number
- TC-19874
- 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 BSF (STI)
View full collection →You are viewing TC-19874. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| TC-19870 | 3/16 | 32 | £119.25 | In Stock | |
| TC-19871 | 1/4 | 26 | £119.25 | In Stock | |
| TC-19872 | 5/16 | 22 | £119.25 | In Stock | |
| TC-19873 | 3/8 | 20 | £137.80 | In Stock | |
| TC-19874 Viewing | 7/16 | 18 | £129.85 | In Stock | |
| TC-19875 | 1/2 | 16 | £176.23 | In Stock | |
| TC-19876 | 9/16 | 16 | £188.15 | In Stock | |
| TC-19877 | 5/8 | 14 | £209.35 | In Stock | |
| TC-19878 | 3/4 | 12 | £221.28 | In Stock | |
| TC-19879 | 7/8 | 11 | £231.88 | 7 days | |
| TC-19880 | 1 | 11 | £298.13 | 7 days |
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