1/2" body 100° countersink, 6 flutes.
A countersink cuts the tapered seat that lets a flat-head screw finish flush with the surface. This one has a 1/2" cutting body on a 1/4" shank, 2-1/2" overall, ground to a 100° included angle.
The "chatterless" grind stays in contact with the work rather than skipping across it, which is what stops the tool from cutting a lobed, faceted hole.
100° is the aerospace standard for flush-head fasteners.
For HTC carbide tools, if the uncoated tool is available and coating is needed, estimated time to ship is 3–4 business days. If the tool is not in stock, estimated time to ship is 7–10 calendar days. For items that require manufacturing, contact us for a confirmed estimated ship date.
Unless stated otherwise, estimated time to ship is measured in calendar days, from order placement until your order is handed to the carrier. Carrier transit time is additional. Orders may ship sooner. We accept orders awaiting replenishment; please contact us before ordering if you need a specific shipping date.
See our Shipping Policy for details.
