BIT CSINK #12 7/32 HSS

PRODUCT DESCRIPTION:

The Irwin 1882784 Countersink Drill Bit is a high-speed steel tapered bit with a 7/32-inch diameter, designed for #12 screws. Featuring a 4-flute design with widened flutes, it drills clean pilot holes while simultaneously creating a smooth countersink for flush screw seating. Its adjustable 4-cutter counterbore allows precise depth control, while the 1/4-inch quick-change shank ensures fast, secure bit changes. Built for woodworking applications, it delivers durability, efficient chip removal, and professional results in a single drilling step.

ADDITIONAL FEATURES:

Time-saving: Does pilot drilling and countersinking in one pass, reducing steps.

Cleaner results: Wide flutes, good countersink attachment work to reduce tear-out and improve finish around screw heads.

Better chip clearing: The wide flutes help remove material efficiently, reducing clogging.

Secure fit & less slippage: Quick-change shank helps with chuck grip.

INSIGHTS:

Speed & Feed: Use moderate speed when in wood; too high speed can burn the wood, especially with larger bits or deeper pilot holes. For harder woods, slower speed + sharp bit helps.

Depth Control: Mark the desired depth for the drill pilot + countersink; ensure the counterbore is set to correct depth so screw head seats flush without damaging material surface.

Secure Work & Proper Support: Clamp workpiece well; stabilize drill to avoid deflection, especially given the length. Use drill press if possible for more precision.

Maintain Sharpness: Keep the drill/tapered bit and the counterbore cutters sharp; dull edges cause tearing, heat, and poor finish.

Clean Chips Between Use: Clearing chips frequently avoids clogging, heat buildup, and reduces risk of burning or splintering.

Storage / Care: Wipe clean, store dry; HSS can rust; coating (if present) helps somewhat but doesn’t replace care.

TECHNICAL SPECIFICATIONS:

Brand: IRWIN

Item Model Number: 1882784

Product Type: Countersink

Material: High-Speed Steel

Finish Type: Uncoated

Number of Flutes: 4

Thread Size: #12

Shank Size: 1/4"

Shank Configuration: Quick Change

Product Dimension (LxWxH): 7.25" x 1.8" x 0.6"

Shank Type: Straight,Hex

Diameter: 7/32"

Overall Length: 4.5"

Application: Woodworking

Shipping Weight: 1 lb