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3/8″ Ball Nose Spiral Bit (AstraHP Coated)

3/8″ Spiral Up-Cut CNC Router bit offers a stronger bit with less material waste. Perfect for larger production CNC machines. AstraHP Coated Solid Carbide 3/8″ cutting diameter 1-1/4″ length of cut 3” overall length Up-Cut Ball End Available in 2″ Length of cut Made in USA #row-591732671 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_1101925628 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_1101925628 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_1101925628 { padding-top: 2px; padding-bottom: 2px; } }

3/8″ Ball Nose Spiral Bit (AstraHP Coated) - Main image
$48.97 $78.99 In stock

Category: Ball End Mill Ball Nose End Mills

This 3/8-inch ball nose spiral bit from BitsBits.com features an AstraHP coating, designed for use in CNC routing and similar applications. It is part of the ball end mill category, suitable for contouring, carving, and finishing work where a rounded profile is needed.

  • Ball nose design for smooth, rounded cuts and 3D carving.
  • Spiral flute geometry helps with chip evacuation.
  • AstraHP coated for enhanced durability and performance.
  • Compatible with standard 3/8-inch shank tooling.
  • Model 330-SRB375 for easy identification.
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Elizabeth ★★★★★

Cut a few test pieces in oak and the AstraHP coating really helped keep the bit from gumming up on the curves. The ball nose left a clean surface with no burning, even at moderate feed rates.

David ★★★★★

Ran this 3/8 ball nose through a batch of contoured pockets and the cut stayed clean the whole time. The spiral flutes clear chips way better than my old straight bit, no chatter even on deeper passes.

Richard ★★★★★

Cut a full 3D relief in walnut with this and the finish off the ball nose was glass smooth, barely needed sanding. The 3/8 shank felt solid in the collet with zero chatter, even on the deeper passes.