DIN 1587

Hexagon domed cap nuts

High Type

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Thread Size
d		 M4 M5 M6
P Coarse thread 0.7 0.8 1
Fine thread -1 / / /
Fine thread -2 / / /
da max 4.6 5.75 6.75
min 4 5 6
dk min=nominal size 6.5 7.5 9.5
dw min 5.9 6.9 8.9
e Grade A min 7.66 8.79 11.05
Grade B min 7.5 8.63 10.89
x Coarse thread max 1.4 1.6 2
Fine thread max / / /
G Coarse thread max 2.75 3 3.7
Fine thread max / / /
h max=nominal size 8 10 12
Grade A min 7.64 9.64 11.57
Grade B min 7.42 9.42 11.3
m max 3.2 4 5
min 2.9 3.7 4.7
mw min 2.32 2.96 3.76
SR ≈ 3.25 3.75 4.75
s max=nominal size 7 8 10
Grade A min（Grade A） 6.78 7.78 9.78
Grade B min（Grade B） 6.64 7.64 9.64
t max 5.74 7.79 8.29
min 5.26 7.21 7.71
w min 2 2 2
per 1000 units≈kg Coarse thread 1.5 2.2 4.6
Fine thread / / /

Thread Size
d		 M8 M10 M12
P Coarse thread 1.25 1.5 1.75
Fine thread -1 1 1.25 1.5
Fine thread -2 / 1 1.25
da max 8.75 10.8 13
min 8 10 12
dk min=nominal size 12.5 15 17
dw min 11.6 14.6 16.6
e Grade A min 14.38 17.77 20.03
Grade B min 14.2 17.59 19.85
x Coarse thread max 2.5 3 3.5
Fine thread max 2 2.5 3
G Coarse thread max 4.9 5.6 6.4
Fine thread max 3.7 4.9 5.6
h max=nominal size 15 18 22
Grade A min 14.57 17.57 21.48
Grade B min 14.3 17.3 21.16
m max 6.5 8 10
min 6.14 7.64 9.64
mw min 4.91 6.11 7.71
SR ≈ 6.25 7.5 8.5
s max=nominal size 13 16 18
Grade A min（Grade A） 12.73 15.73 17.73
Grade B min（Grade B） 12.57 15.57 17.57
t max 11.35 13.35 16.35
min 10.65 12.65 15.65
w min 2 2 3
per 1000 units≈kg Coarse thread 8.9 20.1 28.3
Fine thread 11 20.1 28.3

Thread Size
d		 (M14) M16 (M18)
P Coarse thread 2 2 2.5
Fine thread -1 1.5 1.5 2
Fine thread -2 / / 1.5
da max 15.1 17.3 19.5
min 14 16 18
dk min=nominal size 20 23 26
dw min 19.6 22.5 24.9
e Grade A min 23.35 26.75 30.14
Grade B min 22.78 26.17 29.56
x Coarse thread max 4 4 5
Fine thread max 3 3 4
G Coarse thread max 7.3 7.3 9.3
Fine thread max 5.6 5.6 7.3
h max=nominal size 25 28 32
Grade A min 24.48 27.48 31.38
Grade B min 24.16 27.16 31
m max 11 13 15
min 10.3 12.3 14.3
mw min 8.24 9.84 11.44
SR ≈ 10 11.5 13
s max=nominal size 21 24 27
Grade A min（Grade A） 20.67 23.67 26.67
Grade B min（Grade B） 20.16 23.16 26.16
t max 18.35 21.42 25.42
min 17.65 20.58 24.58
w min 4 4 5
per 1000 units≈kg Coarse thread 39.7 54.3 79.1
Fine thread 39.7 54.3 95

Thread Size
d		 M20 (M22) M24
P Coarse thread 2.5 2.5 3
Fine thread -1 2 2 2
Fine thread -2 1.5 1.5 /
da max 21.6 23.7 25.9
min 20 22 24
dk min=nominal size 28 33 34
dw min 27.7 31.4 33.3
e Grade A min 33.53 37.72 39.98
Grade B min 32.95 37.29 39.55
x Coarse thread max 5 5 6
Fine thread max 4 4 4
G Coarse thread max 9.3 9.3 10.7
Fine thread max 7.3 7.3 7.3
h max=nominal size 34 39 42
Grade A min 33.38 38.38 41.38
Grade B min 33 38 41
m max 16 18 19
min 14.9 16.9 17.7
mw min 11.92 13.52 14.16
SR ≈ 14 16.5 17
s max=nominal size 30 34 36
Grade A min（Grade A） 29.67 33.38 35.38
Grade B min（Grade B） 29.16 33 35
t max 26.42 29.42 31.5
min 25.58 28.58 30.5
w min 5 5 6
per 1000 units≈kg Coarse thread 104 / 216
Fine thread 104 / 216



*not standardized, reference values


All information is strictly informative