standard

1 Inch Drill Bit Standard

This page provides standardized, specification-oriented reference information.

Specifications

Specification	Value
Diameter	1 inch (1.0000 in)
Common Uses	Very large holes; typically wood-focused (spade/auger/Forstner/hole saw); verify tool capability
Shank	Often reduced shank or hex; verify chuck capacity

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Last updated: February 23, 2026