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Carmex Thread Turning External Insert - W (BSW BSF BSP BSB) - Left Hand - 16EL10WK20

16EL10WK20 - Carmex Thread Turning External Insert - W (BSW BSF BSP BSB) - Left Hand

SKU:16EL10WK20

The Carmex Thread Turning External Insert - W is a versatile tool designed for external threading tasks. Specifically engineered for left-handed threads, it supports BSW, BSF, BSP, and BSB standa... Read more ↓
N
S
Thread TypeExternal
Thread DirectionLeft Hand
Thread FormW (BSW BSF BSP BSB)
Pitch10
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£7.74
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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Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Thread Turning External Insert - W is a versatile tool designed for external threading tasks. Specifically engineered for left-handed threads, it supports BSW, BSF, BSP, and BSB standards within a single, reliable insert family. This laydown triangular insert is part of our industry-leading range, trusted worldwide for consistent thread profiles across a wide range of applications.

Ideal for engineers, machinists, fabricators, and even skilled hobbyists, it handles everything from basic to demanding threading jobs with stable engagement, clean finishes, and straightforward setup.

  • Broad thread-standard coverage: Compatible with BSW, BSF, BSP and BSB external thread forms, reducing the need for multiple inserts and cutting tools and helping keep production moving.
  • Left-hand threading design: Optimized for left-hand threads, delivering consistent thread profiles and reliable performance across a variety of materials and production runs.
  • Durable laydown triangular geometry: Provides stable engagement and efficient chip control, minimizing insert changes and maintaining predictable, smooth threading results.

This insert simplifies tooling, improves workflow, and helps you achieve reliable, repeatable thread quality. Its broad compatibility means fewer part-tool pairings to manage, while the left-hand orientation and durable geometry support steady cutting action, reducing downtime and helping you meet production targets with confidence.

Part Numbers

Protool Part Number
16EL10WK20
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

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