Product catagories

Search Products

440U78 Taper-Shank Drill Bits

$114.68

Bulk orders will be discounted, please contact us.

Parabolic-flute drill bits have wide, deep flutes that improve chip flow and heat dissipation, which means feed rates do not need to be reduced as the drill moves deeper into the workpiece. The bright finish on these drill bits is not affected when the bits' cutting edges are resharpened. High-speed steel drill bits provide more flexibility and absorb more shock and vibration than cobalt and carbide drill bits, making them suitable for use in manual drilling machines and handheld power tools. They may leave a rough finish on the hole.

Product Number: 440U78

Add to Wishlist Add to Compare

SEND INQUIRY

  • Description
Mfr Model A4422-18.5
Measurement System Metric
Drill Bit Size 18.50 mm
Decimal Equivalent 0.7283
Maximum Drilling Depth 6-23/32 in
Overall Length 269.00 mm
Shank Type Machining Taper
Finish Machining Bright (Uncoated)
Material Machining High Speed Steel
Primary Material Application Aluminum; Brass; Bronze; Cast Iron; Copper; Steel
UNSPSC 23171609
Country of Origin Brazil (subject to change)
Cutting Direction Right Hand
Flute Length 6-23/32 in
Flute Type Parabolic
Standards DIN 341
Drill Bit Point Angle 130 °
Drill Bit Point Type Conventional Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 35° to 45°
Depth Dia Ratio 12xD
Primary Material Application ISO Code K; N; P
Material Grade Machining General Purpose
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance H8
Secondary Material Application Composite; Nickel; Stainless Steel; Titanium
Secondary Material Application ISO Code M; O; S

You may also like

× Success！success