Values in mm

a	c	Ø6	Ø7	Ø8 (outer diameter x inner diameter x length)
21.8	115	M5	82	24 x 14 x 36

Values in in.

a	c	Ø6	Ø7	Ø8 (outer diameter x inner diameter x length)
0.85	4.53.	M5	3.23	0.94 x 0.55 x 1.42