Dimensions of compressible washer-type direct tension indicator
According to EN 14399-9:2018, Table 2

Size	Internaldiameter diameter		External diameter		Thickness	Height over protrusion	Height of protrusions	Protrusion tangential diameter	Protrusion internal diameter
	d1		d2		h1	h2	h3	d3	d4
	min	max	min	max	min	max	min	max	min
M12	12,75	12,85	26,0	32,5	2,5	5,5	0,8	20,0	13,85
M16	16,75	16,85	35,0	36,8	3,0	6,0	0,8	25,0	17,85
M20	20,95	21,05	41,0	46,0	3,5	6,5	0,8	29,0	22,05
M22	23,05	23,15	46,5	50,6	4,0	7,0	0,8	33,0	24,15
M24	25,15	25,25	50,0	55,2	4,0	7,0	0,8	38,0	26,25
M27	28,30	28,40	54,0	62,1	4,0	7,0	0,8	43,0	29,40
M30	31,45	31,55	59,0	69,0	4,0	7,0	0,8	46,5	32,55
M36	37,75	37,85	78,0	83,0	4,0	7,5	0,8	56,0	38,85

Dimensions in millimeters