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Carmex Spiral Mill Threading Insert - Whitworth - H17-14WMT7

SKU:H17-14WMT7

The Carmex Spiral Mill Threading Insert - Whitworth - H17-14WMT7 is a versatile, indexable threading insert designed for Whitworth threads across a wide range of machines and materials. Its spira... Read more ↓
P
M
K
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ApplicationThreading
Thread FormWHIT (BSW BSF BSP)
Internal or ExternalInternal & External
Insert SizeH17
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£36.58
Prices shown ex. VAT
In Stock— only 4 left
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Spiral Mill Threading Insert - Whitworth - H17-14WMT7 is a versatile, indexable threading insert designed for Whitworth threads across a wide range of machines and materials. Its spiral flute design enables smooth cutting at high feed rates, helping you cut cycle times and boost productivity on both small component runs and heavy‑duty milling operations.

Designed for flexibility, the spiral toolholder accepts 1 to 9 inserts in a compact cutting diameter, with a unique clamping method that ensures precise indexability. The result is reduced vibration and chatter and a consistently high‑quality finish across threading, roughing, and finishing operations. Inserts are MT7 Sub‑Micron Grade with Titanium Nitride multi‑layer coating (ISO K10‑K20), providing broad material compatibility and long wear life.

  • Smooth cutting at high feed rates: Spiral design enables fast, clean cuts with minimized machining time, improving throughput on both small parts and heavy‑duty applications.
  • Flexible insert capacity with precise indexing: Spiral fluted toolholders hold 1–9 inserts in a compact diameter, and the unique clamp ensures reliable, repeatable indexation for consistent results.
  • MT7 TiN-coated inserts for broad material compatibility: Sub‑Micron MT7 inserts with TiN coating deliver enhanced wear resistance and dependable performance across many materials.

This combination supports efficient threading, roughing, and finishing with durable tooling that maintains accuracy and surface quality. Whether you’re optimizing a small shop workflow or running high‑power milling centers, the Carmex spiral system helps reduce downtime, improve thread consistency, and deliver reliable results across diverse materials.

Part Numbers

Protool Part Number
H17-14WMT7
Brand
Carmex
Category
Thread Mill
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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Carmex Spiral Mill Threading Inserts - Whitworth

View full collection →

You are viewing H17-14WMT7. Click any other SKU to view its full details.

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H32-11WMT7 H3211£63.70 5 days
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