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Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Right Hand - 11IR18WK20

11IR18WK20 - Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Right Hand

SKU:11IR18WK20

Introducing the Carmex Thread Turning Internal Insert, model 11IR18WK20, designed for right-hand internal threading. This W insert supports major thread standards (BSW, BSF, BSP, BSB), enabling a... Read more ↓
N
S
Thread TypeInternal
Thread DirectionRight Hand
Thread FormW (BSW BSF BSP BSB)
Pitch18
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£8.60
per item · pack of 10
Prices shown ex. VAT
5 days estimated lead time — subject to availability
Sold in packs of 10
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.
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

Introducing the Carmex Thread Turning Internal Insert, model 11IR18WK20, designed for right-hand internal threading. This W insert supports major thread standards (BSW, BSF, BSP, BSB), enabling a single tool to tackle a wide variety of internal thread tasks. It’s a versatile choice for engineers, buyers, tradespeople, hobbyists, and workshop users seeking reliable internal threading in a compact, easy-to-use format.

Our industry-leading range of thread turning inserts is recognized worldwide, and this high-quality laydown triangular insert continues that tradition. It delivers dependable performance across a broad spectrum of applications—from routine, basic threading jobs to the most demanding, precision-critical tasks.

  • Broad thread-standard compatibility (BSW, BSF, BSP, BSB): Covers the major internal thread standards so you can complete diverse projects with one tool, reducing tool changes and inventory.
  • Triangular laydown geometry for stable, clean cuts: Delivers consistent thread quality with smooth chip control and reduced vibration for better surface finish on internal threads.
  • Reliable performance across basic to demanding tasks: Designed to provide steady, predictable results, helping you finish jobs on time with fewer reworks and interruptions.

This insert helps you streamline workflows, cut down setup and changeover time, and achieve repeatable, high-quality internal threads across a wide range of parts and materials. Whether you’re focused on efficiency on the shop floor or precision in a prototype, this Carmex insert is a dependable choice for dependable results.

Part Numbers

Protool Part Number
11IR18WK20
Brand
Carmex
Category
Thread Turning
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.

Complete Your Project

Tooling and consumables that work with this product.
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