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

Carmex Spiral Mill Threading Insert - NPS - H15-14NPSMT7

SKU:H15-14NPSMT7

The Carmex Spiral Mill Threading Insert for NPS - H15-14NPSMT7 is a versatile, indexable tool designed for threading and milling tasks. It supports both small-part work on compact machines and he... Read more ↓
P
M
K
N
S
ApplicationThreading
Thread FormNPS
Internal or ExternalInternal & External
Insert SizeH15
View all specifications ↓
Download Cutting Data
£40.08
Prices shown ex. VAT
5 days estimated lead time — subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Compatible holders

The ones our customers buy most.

Description

The Carmex Spiral Mill Threading Insert for NPS - H15-14NPSMT7 is a versatile, indexable tool designed for threading and milling tasks. It supports both small-part work on compact machines and heavy-duty milling on larger equipment, delivering fast, smooth cutting and reduced cycle times across threading, end milling, roughing, and finishing.

  • Fast, smooth cutting at high feed rates: Spiral flute design enables aggressive material removal with a calm cutting action, helping you complete threads and profiles quickly without sacrificing finish quality.
  • Optimized indexability and reduced vibration: A unique clamping method keeps inserts precisely positioned, minimizing chatter and extending tool life in demanding production environments.
  • MT7 Sub-Micron TiN-coated inserts for broad material compatibility: The MT7 grade with TiN multilayer coating provides reliable performance across materials (ISO K10–K20), delivering consistent finishes in threading, roughing, and finishing.

The Carmex Spiral Mill Threading Insert helps you streamline production while delivering precise, repeatable results. Its spiral geometry and robust clamping reduce vibration and allow higher cutting forces, which translates to faster cycles and less downtime. The MT7 TiN-coated inserts maintain edge sharpness and wear resistance across materials, helping you achieve consistent thread profiles and high-quality finishes from first part to last. With a single tool and insert family capable of threading, roughing, and finishing, you can simplify setups, shorten changeovers, and boost overall workflow efficiency.

Part Numbers

Protool Part Number
H15-14NPSMT7
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 - NPS

View full collection →

You are viewing H15-14NPSMT7. Click any other SKU to view its full details.

Product SKUInsert SizePitchPriceStock Order
H13-18NPSMT7 H1318£40.08 5 days
H15-14NPSMT7 ViewingH1514£40.08 5 days
H17-14NPSMT7 H1714£40.08 5 days