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Carmex Thread Turning Holder Through Coolant - Internal - Left Hand - 170mm OAL - 16IL Insert - 20 Shank Size

Carmex Thread Turning Holder Through Coolant - Internal - Left Hand - 170mm OAL - 16IL Insert - 20 Shank Size

SKU:SIL0020P16B

The Carmex Thread Turning Holder Through Coolant for internal threading is a precision tool designed for machinists performing deep, accurate internal threads. This left-hand (IL) variant is buil... Read more ↓
TypeThrough Coolant
Internal or ExternalInternal
Minimum Bore24
Shank Size20
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£74.08
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Klarna
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Thread Turning Holder Through Coolant for internal threading is a precision tool designed for machinists performing deep, accurate internal threads. This left-hand (IL) variant is built for dependable performance in demanding applications, with a through-coolant design that supports efficient chip evacuation and consistent cooling.

  • Through-Coolant Bore: Integrated coolant channel delivers fluid directly to the cutting edge to improve chip evacuation and thermal management during internal threading.
  • Internal Threading Capability: Engineered for precise internal threads with versatility for both right-hand (IR) and left-hand (IL) threading applications via a secure screw clamp.
  • Left-Hand Internal Threading (IL): Specifically configured to work with IL inserts, delivering clean, accurate left-hand threads in a variety of materials.
  • 170 mm Overall Length (OAL): Extended reach for deep bore threading while maintaining rigidity and control.
  • 20 mm Shank Size: Stable interface with compatible tool holders to ensure consistent cutting performance.
  • 16IL Insert Compatibility: Designed to mate securely with 16IL inserts for dependable threading geometry and finish.
  • Screw Clamp Connection: Positive, robust clamping minimizes insert movement and reduces the risk of tool dislocation during heavy cuts.
  • Rugged Precision Construction: Built to perform reliably in demanding machining environments with repeatable results.

This holder helps you achieve precise internal threads with improved surface finish, thanks to optimized clearance and robust alignment. The through-coolant design reduces chip buildup and cools the cutting edge, extending insert life and lowering downtime. The screw-clamp system ensures a secure fit between bar and insert, so you can trust your internal threading operations from run to run across a range of bore sizes and materials.

Part Numbers

Protool Part Number
SIL0020P16B
Brand
Carmex
Category
Thread Turning
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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.

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 Screw Clamp Threading Bars Internal - Coolant Bore - Right/Left Hand - For IR/IL Inserts

View full collection →

You are viewing SIL0020P16B. Click any other SKU to view its full details.

Product SKUTypeInternal or ExternalMinimum BoreShank SizeHandOverall LengthInsertPriceStock Order
SIR0010K11B Through CoolantInternal1216Right12511IR£54.72 5 days
SIR0013M16B Through CoolantInternal1616Right15016IR£54.72 5 days
SIR0016P16B Through CoolantInternal1920Right17016IR£54.72 5 days
SIR0020P16B Through CoolantInternal2420Right17016IR£61.74 5 days
SIR0025R16B Through CoolantInternal2925Right20016IR£79.14 5 days
SIR0025R22B Through CoolantInternal2925Right20022IR£75.98 5 days
SIR0032S16B Through CoolantInternal3632Right25016IR£153.93 5 days
SIL0010K11B Through CoolantInternal1216Left12511IL£65.64 5 days
SIL0013M16B Through CoolantInternal1616Left15016IL£65.64 5 days
SIL0016P16B Through CoolantInternal1920Left17016IL£65.64 5 days
SIL0020P16B ViewingThrough CoolantInternal2420Left17016IL£74.08 5 days
SIL0025R16B Through CoolantInternal2925Left20016IL£94.98 5 days
SIL0025R22B Through CoolantInternal2925Left20022IL£91.18 5 days
SIL0032S16B Through CoolantInternal3632Left25016IL£123.12 5 days

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