Letter Thread Gauges | McMaster-Carr

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Drill Bit Size

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Mounting Hole Diameter

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DFARS Compliance

1 Product

Letter

Measure drill bit sizes with these identifiers.

For System of Measurement	For Use With	For Drill Bit Size	Wd.	Ht.	Thick.	Material	Color	Mounting Hole Dia.		Each

Letter	Drills	A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	2 1/2"	6 1/2"	5/64"	Steel	Silver	1/8"	0000000	000000