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Carmex Thread Turning Holder Screw Clamp - External - Right Hand - 200mm OAL - 27UER Insert - 40x40 Shank Size

Carmex Thread Turning Holder Screw Clamp - External - Right Hand - 200mm OAL - 27UER Insert - 40x40 Shank Size

SKU:SER4040R27U
The Carmex Screw Clamp Thread Turning External Holder is a precision toolholder designed for external threading on lathes and CNC machines. Built for right-handed thread turning, it delivers rigi... Read more ↓
Specifications at a glance
TypeStandard
Internal or ExternalExternal
Shank Size40x40
HandRight
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£182.19
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Suitable Inserts
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 Screw Clamp Thread Turning External Holder is a precision toolholder designed for external threading on lathes and CNC machines. Built for right-handed thread turning, it delivers rigid support and repeatable performance in demanding production environments.

  • Overall Length: 200 mm (OAL) for extended reach and stable engagement on long workpieces
  • Handedness: Right-Hand configuration optimized specifically for external thread turning
  • Shank Size: 40 x 40 mm square shank provides solid mounting and minimal deflection
  • Insert Compatibility: Accepts ER and EL inserts, with support for U-Type inserts
  • Clamp System: Screw clamp delivers secure, repeatable toolholding with fast setup and reliable retention
  • Helix Angle: 1.5° helix angle promotes efficient chip evacuation and smoother cutting
  • Insert Reference: Optimized for 27UER insert geometry to achieve accurate threading
  • Construction: Robust, high-ridelity body designed to resist vibration and maintain rigidity during heavy threading

This holder enables consistent external thread turning on shafts, fittings, and fasteners with clean starts and uniform thread forms. The screw clamp design reduces setup time and enhances repeatability across production runs, while the 200 mm length and 40x40 shank contribute to core rigidity and stable cutting. With broad insert compatibility (ER/EL and U-Type) and a dedicated 27UER reference, you have the flexibility to select the optimal insert for your material, thread pitch, and finish, improving tool life and surface quality.

Part Numbers

Protool Part Number
SER4040R27U
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 Thread Turning External Holders - Right/Left Hand - For ER/EL Inserts

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You are viewing SER4040R27U. Click any other SKU to view its full details.

Product SKUTypeInternal or ExternalShank SizeHandOverall LengthInsertPriceStock Order
SER0808H11 StandardExternal8x8Right10011ER£42.22 5 days
SER1010H11 StandardExternal10x10Right10011ER£49.72 5 days
SER1010M11 StandardExternal10x10Right15011ER£54.72 5 days
SER1212K11 StandardExternal12x12Right12511ER£49.72 5 days
SER1212M11 StandardExternal12x12Right15011ER£54.72 5 days
SER1212F16 StandardExternal12x12Right8016ER£49.72 In Stock
SER1616H16 StandardExternal16x16Right10016ER£49.72 In Stock
SER2020K16 StandardExternal20x20Right12516ER£49.72 5 days
SER2525M16 StandardExternal25x25Right15016ER£56.34 In Stock
SER3232P16 StandardExternal32x32Right17016ER£85.22 In Stock
SER2525M22 StandardExternal25x25Right15022ER£59.64 In Stock
SER3232P22 StandardExternal32x32Right17022ER£130.38 5 days
SER4040R22 StandardExternal40x40Right20022ER£160.17 In Stock
SER2525M22U StandardExternal25x25Right15022UER£77.30 5 days
SER3232P22U StandardExternal32x32Right17022UER£140.76 5 days
SER4040R22U StandardExternal40x40Right20022UER£168.72 5 days
SER2525M27 StandardExternal25x25Right15027ER£77.30 In Stock
SER3232P27 StandardExternal32x32Right17027ER£151.50 5 days
SER4040R27 StandardExternal40x40Right20027ER£180.48 5 days
SER2525M27U StandardExternal25x25Right15027UER£100.48 5 days
SER3232P27U StandardExternal32x32Right17027UER£152.76 5 days
SER4040R27U ViewingStandardExternal40x40Right20027UER£182.19 5 days
SER2525M33U StandardExternal25x25Right15033UER£98.54 5 days
SER3232P33U StandardExternal32x32Right17033UER£197.13 5 days
SEL0808H11 StandardExternal8x8Left10011EL£44.24 5 days
SEL1010H11 StandardExternal10x10Left10011EL£49.72 5 days
SEL1010M11 StandardExternal10x10Left15011EL£54.72 5 days
SEL1212K11 StandardExternal12x12Left12511EL£49.72 5 days
SEL1212M11 StandardExternal12x12Left15011EL£54.72 5 days
SEL1212F16 StandardExternal12x12Left8016EL£49.72 5 days
SEL1616H16 StandardExternal16x16Left10016EL£49.72 In Stock
SEL2020K16 StandardExternal20x20Left12516EL£49.72 In Stock
SEL2525M16 StandardExternal25x25Left15016EL£56.34 5 days
SEL3232P16 StandardExternal32x32Left17016EL£85.22 5 days
SEL2525M22 StandardExternal25x25Left15022EL£59.64 In Stock
SEL3232P22 StandardExternal32x32Left17022EL£86.92 5 days
SEL4040R22 StandardExternal40x40Left20022EL£106.78 5 days
SEL2525M22U StandardExternal25x25Left15022UEL£77.30 5 days
SEL3232P22U StandardExternal32x32Left17022UEL£93.84 5 days
SEL4040R22U StandardExternal40x40Left20022UEL£112.48 5 days
SEL2525M27 StandardExternal25x25Left15027EL£77.30 In Stock
SEL3232P27 StandardExternal32x32Left17027EL£101.00 5 days
SEL4040R27 StandardExternal40x40Left20027EL£120.32 5 days
SEL2525M27U StandardExternal25x25Left15027UEL£100.48 5 days
SEL3232P27U StandardExternal32x32Left17027UEL£101.84 5 days
SEL4040R27U StandardExternal40x40Left20027UEL£121.46 5 days
SEL2525M33U StandardExternal25x25Left15033UEL£98.54 5 days
SEL3232P33U StandardExternal32x32Left17033UEL£131.42 5 days