Milling Cutters and Arbors Keyway Cutter Hole Keyway Dimensional Data ANSI/ASME B94.19-1997 American National Standard Keys and Keyways

Gear Products and Suppliers | Gear Knowledge Menu

The following is summarized from the American National Standard Keys and Keyways for Milling Cutters and Arbors ANSI/ASME B94.19-1997

Keyways for Milling Cutters and Arbors

Nominal Shaft (Arbor) Keyseat Cutter Hole Diameter	Nominal Size Square Key	Cutter Hole & Keyway
		Hole and Keyway
		C	C	D*	H	Corner Radius
Hole Dia.	(Square)	Max.	Min.	Min.	Nom.
1⁄2	3⁄32	0.106	0.099	0.5578	3⁄64	0.020
5⁄8	1⁄8	0.137	0.130	0.6985	1⁄16	1⁄32
3⁄4	1⁄8	0.137	0.130	0.8225	1⁄16	1⁄32
7⁄8	1⁄8	0.137	0.130	0.9475	1⁄16	1⁄32
1	1⁄4	0.262	0.255	1.1040	3⁄32	3⁄64
11⁄4	5⁄16	0.343	0.318	1.3850	1⁄8	1⁄16
11⁄2	3⁄8	0.410	0.385	1.6660	5⁄32	1⁄16
13⁄4	7⁄16	0.473	0.448	1.9480	3⁄16	1⁄16
2	1⁄2	0.535	0.510	2.1980	3⁄16	1⁄16
21⁄2	5⁄8	0.660	0.635	2.7330	7⁄32	1⁄16
3	3⁄4	0.785	0.760	3.2650	1⁄4	3⁄32
31⁄2	7⁄8	0.910	0.885	3.8900	3⁄8	3⁄32
4	1	1.035	1.010	4.3900	3⁄8	3⁄32
41⁄2	11⁄8	1.160	1.135	4.9530	7⁄16	1⁄8
5	11⁄4	1.285	1.260	5.5150	1⁄2	1⁄8

MILLING CUTTERS

*D maximum is allways .010" larger than D minimum.

All dimensions given in inches.