Amana Tool Carbide Tipped 82 Degree Countersink Tapered Drill Bit, 55608, 8 Screw, 7/16 D x 11/64 Drill Dia x 5/16 Round Shank

Elevate your woodworking precision with the Amana Countersink Drill Bit. This countersink drill bit for wood, aluminum, and composite materials has a 2-wing round shank and a taper drill bit ideal for wood screws. Includes a fully-ground (High-Speed Steel) HSS M2 DIN 338 drill bit. Carbide-tipped for long life, this wood countersink lasts up to 40× longer than standard steel countersinks. Its 2-flute integral design ensures clean, concentric countersinks and counterbores in natural woods, plywood, plastics, and non-ferrous materials. How To Use With A CNC Machine With the adjustable depth drill bit you can adjust for whatever size material you’re working with. They are most effectively used with a drilling toolpath, utilizing the peck drill option at .25" per pass with a .125" retract height. For optimal performance run at 3,000 RPM with a 30 IPM (Inches Per Minute) plunge rate. No feed rate needs to be set with these as they only move up and down with the Z axis, not side to side. If your software doesn’t allow a 0 feed rate, you can enter 1 IPM (Inch Per Minute) in the feed rate as a placeholder. For countersinks with 1/4" round shank, use 1/4" spring collet. For countersinks with 5/16" round shank, use 7-8mm spring collet. For countersinks with 3/8" round shank, use 9-10mm spring collet. Please note: When drilling aluminum-ferrous materials, for optimal performance and extended tool life use lubricant or air cooling. Make sure the material is fixed and the drill is stable during drilling.

• COUNTERSINK TAPERED DRILL BIT: The 2-flute countersink is used to countersink and counterbore holes for the heads of screws; Includes HSS M2 drill bit, complete with a taper point for wood screws
• IDEAL FOR DRILLING: Natural Woods, Man-Made Boards, MDF, Chipboard, Plywood, Aluminum/Non-Ferrous, Aluminum Composite Materials (ACM), and Composite Decking Materials
• COUNTERSINK DRILL BIT DIMENSIONS: 55608; Number 8 Screw; 49 Degree Angle; 1/2 Cutting Height x 7/16 Diameter x 11/64 Drill Diameter x 5/16 Round Shank; HSS M2 fully ground drill bit included
• CARBIDE TIPPED: This Amana countersink is designed for use in handheld drill, drill press machines, and CNC machines when used with a CNC Spring Collet; Carbide-tipped for long lasting performance
• INDUSTRIAL-QUALITY TOOLS: Amana Tool is an industry leader for over 50 years specializing in industrial quality cutting tools for the woodworking, plastics, aluminum, composite, and metal