7/8" Drill Bits | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Thread Size Thread Size

1/4"-28

	For Drill Bit Size For Drill Bit Size

	For Screw Size For Screw Size

	Countersink Angle Countersink Angle

104 Products

Drilling

Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Chip-Clearing Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Cobalt Steel Drill Bits

Threaded-Shank Drill Bits

All have a 1/4"-28 threaded shank which installs directly into the threaded spindle on a compatible drill.

Drill Bits for Aluminum, Brass, and Bronze

Because softer metal, like aluminum, brass, and bronze, can clog a bit, the flutes on these bits lift chips out of the hole. Also known as slow-spiral drill bits.

Inch Size Depth-Limiting Drill Bit Stop Collars

Metric Size Depth-Limiting Drill Bit Stop Collars

Letter Size Depth-Limiting Drill Bit Stop Collars

High-Speed Steel Drill-Bit Countersinks for Screws

Use on plastic and most metals.

Carbon Steel Drill-Bit Countersinks for Screws

For use on wood and plastic.

Secure-Hold Bit Adapters for Ratchet Wrenches

Lock your bit into the adapter to prevent accidental disengagement. These adapters attach to square-drive tools.

Hardened High-Speed M2 Tool Steel Rods

Hardened Undersized High-Speed M2 Tool Steel Rods

These rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits.

Hardened Oversized High-Speed M2 Tool Steel Rods

Also known as reamer blanks, these rods are hardened for increased abrasion and impact resistance.