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35% OFF SPOT DRILLS, CENTRE DRILLS & COUNTERSINKS – OFFER ENDS TODAY

We'd like to thank all our customers for their business during 2024, and we wish everyone a very happy Christmas and New Year.

Cutwel will close at 3pm on Monday 23rd December 2024, and reopen at 8am on Thursday 2nd January 2025. Any orders placed online over the Christmas period will be processed on the 2nd of January when we return.

Free Next Day Delivery
on orders over £59 ex vat*

Expert Technical Team
Get advice on 01924 869 615

Same Day Despatch
On orders placed up to 5.30pm

8.3mm 90 Degree Uncoated HSS-XE Long Shank Countersink, 3-Flat Shank - 20.1720 Series (Karnasch)

Cutwel Sku
201720020

8.3mm 90 Degree Uncoated HSS-XE Long Shank Countersink, 3-Flat Shank - 20.1720 Series (Karnasch)

Cutwel Sku
201720020

Key Features

available 90 degree countersink angle with long shank
available HSS-XE Substrate for considerably longer tool life vs HSS
available 3-flat shank to prevent slippage with high precision torque transmission
Read More
P
Steel
M
Stainless Steel
K
Cast Iron
N
Non-Ferrous
Diameter (mm)8.3
Overall Length (mm)85
Shank (mm)6
minus plus
View Full Range
available In stock

Need Help?

Contact Sales

01924 869660 Mon - Thurs 8am - 6pm Fri 8am - 5:30pm

Specification

Category Hole Making
Sub Category Countersinks
Diameter (mm) 8.3
Shank (mm) 6
Diameter Range (mm) 2-8.3
Overall Length (mm) 85
Substrate HSS
Surface Treatment Uncoated
Shank Type 3-Flat
Applicable Materials Steel, Stainless Steel, Cast Iron, Non-Ferrous
Performance 3
Substrate Description HSS-XE (High Speed Steel With Cobalt)
Self Centring Yes
Type Long Shank Countersink
Angle 90°
Brand Karnasch
Part Numbers
  • Cutwel Part Number 201720020

Description

The Karnasch 22.1720 series 3 flute, long shank, 90 degree countersinks are made from HSS-XE and are suitable for general machining of Steel, Non Ferrous and Cast Iron. These have a self centering geometry for long reach applications and come supplied with 3 flats on the shank to prevent the tool slipping in a drill chuck.

Features & Benefits

  • 90 degree countersink angle with long shank
  • HSS-XE Substrate for considerably longer tool life vs HSS
  • 3-flat shank to prevent slippage with high precision torque transmission
  • For high precision machining of of Steel, Stainless Steel, Cast Iron & Non-Ferrous
  • 3 Flutes ground CBN geometry for excellent chip flow, zero vibration and self centring

What time are we open?

We are open Monday to Friday and able to dispatch orders between 8am and 5:45pm Monday to Thursday, and up to 5pm on Friday.

What delivery services do we offer?

To mainland UK we offer FREE UK next day delivery on all standard orders above £59 (ex vat), and £79 (ex vat) on all orders including any liquids.*

Alternatively, we offer a FREE Click and Collect service from our distribution centre in Cleckheaton, West Yorkshire. Click here for the full address.

For standard orders under £59 (ex vat), we offer the following:

  • 1st class post - £2.49
  • DPD Standard Next Day Delivery - £6.50
  • DPD Next Day Pre-12pm - £9.50 or (£5.00 on orders over £59 (ex VAT))
  • DPD Next Day Pre-10.30am - £17.00

For orders containing liquids under £79 (ex vat),  standard UK Mail Next Day Delivery is £8.00 and UK Mail Next Day Pre-12pm Delivery is £13.00.

We also offer Saturday delivery for those that require it. If you order before 5pm on a Friday we offer a range of options which can be viewed here.

For a full breakdown of costs for all types of item and geographical locations including Scottish Highlands, Northern Ireland, Channel Islands & Republic of Ireland, click here.

How do I return an order/item?

Our returns policy is easier than ever. We understand that if an item isn’t correct, then it needs to be returned. If you are wanting to return anything supplied by Cutwel please see our returns page for full instructions.

*T’s & C’s and exclusions apply. Please see our delivery page for more information on all our services including those outside of mainland UK (Republic of Ireland, Northern Ireland, Scottish Highlands, Channel Islands etc).

Filter Items arrow
Code Diameter (mm) Shank (mm) Diameter Range (mm) Overall Length (mm) Stock Price
(Ex VATInc. VAT)
Filter Items
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Diameter (mm)
carrat-down
Shank (mm)
carrat-down
Diameter Range (mm)
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Overall Length (mm)
carrat-down
Diameter (mm): 6.3 Shank (mm): 5 Diameter Range (mm): 1.5-6.3 Overall Length (mm): 85
unavailable 7 days*
£22.54 £18.78
minus plus
Diameter (mm): 8.3 Shank (mm): 6 Diameter Range (mm): 2-8.3 Overall Length (mm): 85
available In stock
£23.83 £19.86
minus plus
Diameter (mm): 10.4 Shank (mm): 6 Diameter Range (mm): 2.5-10.4 Overall Length (mm): 88
available In stock
£27.54 £22.95
minus plus
Diameter (mm): 12.4 Shank (mm): 8 Diameter Range (mm): 2.8-12.4 Overall Length (mm): 108
available In stock
£30.78 £25.65
minus plus
Diameter (mm): 15 Shank (mm): 10 Diameter Range (mm): 3.2-15 Overall Length (mm): 110
available In stock
£39.46 £32.88
minus plus
Diameter (mm): 16.5 Shank (mm): 10 Diameter Range (mm): 3.2-16.5 Overall Length (mm): 112
available In stock
£39.46 £32.88
minus plus
Diameter (mm): 20.5 Shank (mm): 10 Diameter Range (mm): 3.5-25 Overall Length (mm): 115
available In stock
£58.99 £49.16
minus plus

*Estimated lead time, subject to availability