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1/16″ Long-Reach Down-Cut Spiral Bit (AstraHP Coated)

AstraHP Coated Solid Carbide Tip diameter: 1/16″ Shank Diameter: 1/4″ Length of cut: 3/16″ Length of reach: 1/2″ Made in USA Also available in standard length See description below for Speed and Feed rates. #row-1595415742 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_1314636390 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_1314636390 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_1314636390 { padding-top: 2px; padding-bottom: 2px; } }

1/16″ Long-Reach Down-Cut Spiral Bit (AstraHP Coated) - Main image
Bits&Bits AstraHP Coated 425-DNC062LR 1/16" Long Reach Down-cut CNC Router BitBits&Bits AstraHP Coated 425-DNC062LR 1/16" Long Reach Down-cut CNC Router Bit
$28.79 $44.99 In stock

Category: Down-Cut CNC Bits

This 1/16-inch long-reach down-cut spiral bit from BitsBits.com is designed for precise CNC routing tasks. The AstraHP coating helps reduce wear for longer tool life, while the down-cut geometry pushes chips downward for a cleaner top surface on your workpiece.

  • Down-cut spiral design minimizes tear-out on the top edge of cuts.
  • Long-reach geometry allows deeper access in tight or recessed areas.
  • AstraHP coating provides a durable, heat-resistant surface.
  • Recommended operating parameters: spindle speed 16,000 RPM, feed rate 40 IPM, plunge rate 20 IPM, and a maximum depth per pass of 1/16 inch (0.062 inch).
  • Compatible with CNC routers; model number 425-DNC062LR for reference.
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Customer Reviews (4.6 / 5 · 5 reviews)

Violet ★★★★★

The AstraHP coating really does seem to make a difference—I’ve been using this bit for several hours on hardwoods and it’s holding its edge much better than uncoated bits I’ve tried. The 1/16″ size with the long reach lets me get into tight spaces without losing precision. It’s a solid upgrade for f

Daniel ★★★★★

I’ve been pushing this bit through some pretty tough cuts and the AstraHP coating is holding up far better than the uncoated bits I used before, no chipping after a full day of work. The down-cut action kept the top edge of my oak pieces clean, which saved me a ton of sanding time, and the long reac

Eli ★★★★★

That thin 1/16″ reach got me into a deep slot cleanly without snapping, and the AstraHP coating still looks fresh after a full day of plywood runs. The down-cut edge kept the top edge crisp with zero fuzz, which is exactly what I needed for these inlays.

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