Woodruff Keys	These keys are commonly found in Alvis engines, on lighter duty drives such as water pump and magneto.
	They are formed as segments of a circle, the height of the segment being a little less than the radius.
	If anyone can fill in the blanks I will be grateful.
					Depth of Cut (shaft) - inch
Woodruff No.	U.S. Std. No.	Width	Diameter	Height	Min	Max
1	204	1/16	1/2	13/64	0.166	0.171
2	304	3/32	1/2	13/64	0.151	0.156
3	404	1/8	1/2	13/64	0.135	0.14
4	305	3/32	5/8	1/4
5	405	1/8	5/8	1/4
6	505	5/32	5/8	1/4	0.167	0.172
7	406	1/8	3/4	5/16	0.245	0.25
8	506	5/32	3/4	5/16	0.23	0.235
9	606	3/16	3/4	5/16	0.214	0.219
10	507	5/32	7/8	3/8
11	607	3/16	7/8	3/8
12	707	7/32	7/8	3/8
13	608	3/16	1	7/16	0.339	0.343
14	708	7/32	1	7/16
15	808	1/4	1	7/16	0.308	0.313
16	609	3/16	1-1/8	31/64
17	709	7/32	1-1/8	31/64
18	809	1/4	1-1/8	31/64
19	610	3/16	1-1/4	35/64
20	710	7/32	1-1/4	35/64
21	810	1/4	1-1/4	35/64	0.417	0.422
22	811	1/4	1-3/8	19/32
23	1011	5/16	1-3/8	19/32
24	812	1/4	1-1/2
25	1012	5/16	1-1/2	41/64
26	617	3/16	2-1/8
27	817	1/4	2-1/8
28	1017	5/16	2-1/8
29	1217	3/8	2-1/8