Size MM	A MM	B MM	C MM	D MM	E MM	F MM	G MM
1/8	9	12	12	4	9.5	19	20
3/16	11	13.5	14	5	10.8	22	26
1/4	12.5	15.5	14	6	11.5	25	26
5/16	15.5	18	16	6	16	31	31
3/8	21	22	20	8	20	40	37
1/2	25	25	24	10	26	47	46
5/8	30	28	28	12	31	55	57
11/16	33	28.5	30	12	35	58.5	64
3/4	36.5	31	34	16	36	65	71
7/8	40	36	38	16	43	72	77
1	45	40	44	20	48	80	88