DIN 471

Retaining rings for shafts

Normal type

tech-din471




Nominal Diameter
d		 M3 M4 M5 M6
s max 0.4 0.4 0.6 0.7
min 0.35 0.35 0.55 0.65
d3 max 2.74 3.74 4.74 5.64
min 2.55 3.55 4.55 5.45
d5 min 1 1 1 1.2
a max 1.9 2.2 2.5 2.7
n ≈ 0.8 0.9 1.1 1.3
per 1000 units ≈ kg 0.017 0.022 0.066 0.084

Nominal Diameter
d		 M7 M8 M9 M10
s max 0.8 0.8 1 1
min 0.75 0.75 0.94 0.94
d3 max 6.56 7.46 8.46 9.4
min 6.32 7.22 8.22 8.94
d5 min 1.2 1.2 1.2 1.5
a max 3.1 3.2 3.3 3.3
n ≈ 1.4 1.5 1.7 1.8
per 1000 units ≈ kg 0.121 0.158 0.3 0.34

Nominal Diameter
d		 M11 M12 M13 M14
s max 1 1 1 1
min 0.94 0.94 0.94 0.94
d3 max 10.3 11.1 12 13
min 9.84 10.64 11.54 12.54
d5 min 1.5 1.7 1.7 1.7
a max 3.3 3.3 3.4 3.5
n ≈ 1.8 1.8 2 2.1
per 1000 units ≈ kg 0.41 0.5 0.53 0.64

Nominal Diameter
d		 M15 M16 M17 M18
s max 1 1 1 1.2
min 0.94 0.94 0.94 1.14
d3 max 13.9 14.8 15.8 16.6
min 13.44 14.34 15.34 16.14
d5 min 1.7 1.7 1.7 2
a max 3.6 3.7 3.8 3.9
n ≈ 2.2 2.2 2.3 2.4
per 1000 units ≈ kg 0.67 0.7 0.82 1.11

Nominal Diameter
d		 M19 M20 M21 M22
s max 1.2 1.2 1.2 1.2
min 1.14 1.14 1.14 1.14
d3 max 17.6 18.63 19.63 20.63
min 17.14 18.08 19.08 20.08
d5 min 2 2 2 2
a max 3.9 4 4.1 4.2
n ≈ 2.5 2.6 2.7 2.8
per 1000 units ≈ kg 1.22 1.3 1.42 1.5

Nominal Diameter
d		 M24 M25 M26 M28
s max 1.2 1.2 1.2 1.5
min 1.14 1.14 1.14 1.44
d3 max 22.41 23.41 24.41 26.11
min 21.78 22.78 23.78 25.48
d5 min 2 2 2 2
a max 4.4 4.4 4.5 4.7
n ≈ 3 3 3.1 3.2
per 1000 units ≈ kg 1.77 1.9 1.96 2.92

Nominal Diameter
d		 M29 M30 M32 M34
s max 1.5 1.5 1.5 1.5
min 1.44 1.44 1.44 1.44
d3 max 27.11 28.11 29.81 31.75
min 26.48 27.48 29.18 31
d5 min 2 2 2.5 2.5
a max 4.8 5 5.2 5.4
n ≈ 3.4 3.5 3.6 3.8
per 1000 units ≈ kg 3.2 3.31 3.54 3.8

Nominal Diameter
d		 M35 M36 M38 M40
s max 1.5 1.75 1.75 1.75
min 1.44 1.69 1.69 1.69
d3 max 32.45 33.45 35.45 36.89
min 31.7 32.7 34.7 35.6
d5 min 2.5 2.5 2.5 2.5
a max 5.6 5.6 5.8 6
n ≈ 3.9 4 4.2 4.4
per 1000 units ≈ kg 4 5 5.62 6.03

Nominal Diameter
d		 M42 M45 M48 M50
s max 1.75 1.75 1.75 2
min 1.69 1.69 1.69 1.93
d3 max 38.89 41.89 44.89 46.19
min 37.6 40.6 43.6 44.9
d5 min 2.5 2.5 2.5 2.5
a max 6.5 6.7 6.9 6.9
n ≈ 4.5 4.7 5 5.1
per 1000 units ≈ kg 6.5 7.5 7.9 10.2

Nominal Diameter
d		 M52 M55 M56 M58
s max 2 2 2 2
min 1.93 1.93 1.93 1.93
d3 max 48.19 51.26 52.26 54.26
min 46.9 49.7 50.7 52.7
d5 min 2.5 2.5 2.5 2.5
a max 7 7.2 7.3 7.3
n ≈ 5.2 5.4 5.5 5.6
per 1000 units ≈ kg 11.1 11.4 11.8 12.6

Nominal Diameter
d		 M60 M62 M63 M65
s max 2 2 2 2.5
min 1.93 1.93 1.93 2.43
d3 max 56.26 58.26 59.26 61.26
min 54.7 56.7 57.7 59.7
d5 min 2.5 2.5 2.5 3
a max 7.4 7.5 7.6 7.8
n ≈ 5.8 6 6.2 6.3
per 1000 units ≈ kg 12.9 14.3 15.9 18.2

Nominal Diameter
d		 M68 M70 M72 M75
s max 2.5 2.5 2.5 2.5
min 2.43 2.43 2.43 2.43
d3 max 63.96 65.96 67.96 70.96
min 62.4 64.4 66.4 69.4
d5 min 3 3 3 3
a max 8 8.1 8.2 8.4
n ≈ 6.5 6.6 6.8 7
per 1000 units ≈ kg 21.8 22 22.5 24.6

Nominal Diameter
d		 M78 M80 M82 M85
s max 2.5 2.5 2.5 3
min 2.43 2.43 2.43 2.92
d3 max 73.96 74.96 76.96 79.96
min 72.4 73.4 75.4 78.4
d5 min 3 3 3 3.5
a max 8.6 8.6 8.7 8.7
n ≈ 7.3 7.4 7.6 7.8
per 1000 units ≈ kg 26.2 27.3 31.2 36.4

Nominal Diameter
d		 M88 M90 M95 M100
s max 3 3 3 3
min 2.92 2.92 2.92 2.92
d3 max 83.04 85.04 90.04 95.04
min 81.2 83.2 88.2 93.2
d5 min 3.5 3.5 3.5 3.5
a max 8.8 8.8 9.4 9.6
n ≈ 8 8.2 8.6 9
per 1000 units ≈ kg 41.2 44.5 49 53.7

Nominal Diameter
d		 M105 M110 M115 M120
s max 4 4 4 4
min 3.9 3.9 3.9 3.9
d3 max 98.54 103.54 108.54 113.54
min 96.7 101.7 106.7 111.7
d5 min 3.5 3.5 3.5 3.5
a max 9.9 10.1 10.6 11
n ≈ 9.3 9.6 9.8 10.2
per 1000 units ≈ kg 80 82 84 86

Nominal Diameter
d		 M125 M130 M135 M140
s max 4 4 4 4
min 3.9 3.9 3.9 3.9
d3 max 118.54 123.63 128.63 133.63
min 116.7 121.5 126.5 131.5
d5 min 4 4 4 4
a max 11.4 11.6 11.8 12
n ≈ 10.4 10.7 11 11.2
per 1000 units ≈ kg 90 100 104 110

Nominal Diameter
d		 M145 M150 M155 M160
s max 4 4 4 4
min 3.9 3.9 3.9 3.9
d3 max 138.63 142.63 146.63 151.63
min 136.5 140.5 144.5 149.5
d5 min 4 4 4 4
a max 12.2 13 13 13.3
n ≈ 11.5 11.8 12 12.2
per 1000 units ≈ kg 115 120 135 150

Nominal Diameter
d		 M165 M170 M175 M180
s max 4 4 4 4
min 3.9 3.9 3.9 3.9
d3 max 156.13 161.13 166.13 171.03
min 154 159 164 168.9
d5 min 4 4 4 4
a max 13.5 13.5 13.5 14.2
n ≈ 12.5 12.9 12.9 13.5
per 1000 units ≈ kg 160 170 180 190

Nominal Diameter
d		 M185 M190 M195 M200
s max 4 4 4 4
min 3.9 3.9 3.9 3.9
d3 max 176.13 181.22 186.22 191.22
min 174 178.8 183.8 188.8
d5 min 4 4 4 4
a max 14.2 14.2 14.2 14.2
n ≈ 13.5 14 14 14
per 1000 units ≈ kg 200 210 220 230

Nominal Diameter
d		 M210 M220 M230 M240
s max 5 5 5 5
min 4.88 4.88 4.88 4.88
d3 max 198.72 208.72 218.72 228.72
min 196.3 206.3 216.3 226.3
d5 min 4 4 4 4
a max 14.2 14.2 14.2 14.2
n ≈ 14 14 14 14
per 1000 units ≈ kg 248 265 290 310

Nominal Diameter
d		 M250 M260 M270 M280
s max 5 5 5 5
min 4.88 4.88 4.88 4.88
d3 max 238.72 245.72 255.81 265.81
min 236.3 243.3 253 263
d5 min 4 5 5 5
a max 14.2 16.2 16.2 16.2
n ≈ 14 16 16 16
per 1000 units ≈ kg 335 355 375 398

Nominal Diameter
d		 M290 M300
s max 5 5
min 4.88 4.88
d3 max 275.81 285.81
min 273 283
d5 min 5 5
a max 16.2 16.2
n ≈ 16 16
per 1000 units ≈ kg 418 440



nominal size = for shafts Ø
*intermediate size not included in the standard


All information is strictly informative