Whiteside #8 Countersink Bit

Whiteside 4 Flute, 82-degree Adjustable #8 Countersink, High Speed Steel, 3/8″ Outside Cutting diameter, 11/64″ Inside Diameter (for 11/64″ center drill), for countersinking holes for a #8 size screw. These Whiteside #8 countersinks are designed to slip over the drill bit and affix with dual set screws into the flutes. Adjust the drilling length by sliding the head up or down the bit. Use to countersink holes in wood, plastic, or aluminum for flat head screws. High Speed Steel series for longer life, especially in fiberglass or other abrasive materials. Sold together with the Taper Point Drill #8 which is ideal for better control on entry and exit. The Taper Point resists the rapid pull-in tendency of gelcoat and other hard, thin materials. They also break through less abruptly, which helps reduce blowout on exit.

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• Custom Engraving Tools: Made to order and typically ship within 1–2 business days.

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New, unused in-stock tools may be returned within 30 days of delivery for a full refund.
Made-to-order tools—such as custom engraving cutters—may be returned but are subject to a 25% restocking fee.

Customers are responsible for return shipping costs unless the return is due to our error (such as receiving an incorrect or defective item). After 30 days, refunds or store credit may be offered at our discretion, except for warranty-related issues. Start your return here.

Unused items may also be exchanged for other tools; shipping charges apply unless the exchange is required due to our mistake.

If your order arrives damaged, please email info@bitsbits.com