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4mm Worm Pattern HSS 5 Percent Cobalt Extra Long Length 25xD Drill - DT693 (YG-1)

(DT693040) Performance
£32.78 £27.32
The DT693 series YG-1 HSS 5 Percent cobalt extra long 25xD drills have a worm pattern geometry which feature a parabolic u-shaped flute for efficient chip evacuation. Excellent for deep hole drilling in soft or long chipping materials. Diameters range from 4-10mm.
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Approx. 4 days. Subject to availability
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Carbon Steel ~ HB 225
Alloy Steels HB225-325
Pre-Hardened Steel HRc30~45
Hardened Steels HRc55-
Stainless Steel
Cast Iron
Hardened Steels HRc-45-55
HRSA's (Heat Resistant Super Alloys)
Excellent Good
Features & Benefits
  • 25xD Extra Long Length Drill for Deep Hole Drilling.
  • Made from a HSS substrate with a 5% cobalt content.
  • Bright Finish.
  • Suitable for machining Non Alloy Steels, Alloy Steels, Grey Cast Iron, Malleable Cast Iron, Special Aluminum or Magnesium Alloys.
  • Worm pattern drills feature a parabolic u-shaped flute for efficient chip evacuation.
  • Bright finish prevents built up edge and deep flute pockets prevent chip clogging.
  • Excellent for soft or long chipping materials.
Point Angle 130°
Helix Angle 38°
Coating Description Bright Finish
Brand YG-1
Product Range Worm Pattern Drills
Substrate Description HSS 5% Cobalt
Drill Tolerance h8
Self Centering No
L1 (Flute Length) 190
Performance 2
D1 (Diameter) 4
D2 (Shank) 4
L2 (Overall Length) 280
Substrate HSS
Surface Treatment Uncoated
Length Extra Long (20xD)
Shank Plain
Applicable Materials Cast Iron, Non-Ferrous, Steel
Through Coolant No
Cutwel Sku DT693040
Product Questions
Downloads & Cutting Data