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Key Frame Dimensions

Keyframe Dimensions
Key Frame Dimensions
NEMA Shaft (U) Key (R) Dimension (S)
3⁄8 21⁄64 flat
1⁄2 29⁄65 flat
5⁄8 33⁄64 3⁄16
7⁄8 49⁄64 3⁄16
1-1⁄8 63⁄64 1⁄4
1-3⁄8 1-13⁄64 5⁄16
1-5⁄8 1-13⁄32 3⁄8
1-7⁄8 1-19⁄32 3⁄8
1-7⁄8 1-19⁄32 1⁄2
2-1⁄8 1-27⁄32 1⁄2
2-3⁄8 2-1⁄64 5⁄8
2-1⁄2 2-3⁄16 5⁄8
2-7⁄8 2-29⁄64 3⁄4
3-3⁄8 2-7⁄8 7⁄8
3-7⁄8 3-5⁄16 1

Key Frame Dimensions