Spline Bits | McMaster-Carr

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External 12-Point

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1 5/16" to 2 1/8"

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1,947 Products

Fastening and Joining

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Screwdriver Bits

Screwdriver Bits

Pair with drivers to turn screws

L-Keys

Turn fasteners from either end and reach into tight spots

Fabricating and Machining

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

Drill Bit Shank Adapters

Drill Bit Shank Adapters

Convert your power tool to fit different drill bit sizes or shank types

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)