DIN 961

Hexagon head screws with fine pitch thread

tech-din961




Screw Thread
d		 M8 M10 M12
P Pitch Fine thread-1 1 1 1.5
Fine thread-2 - 1.25 1.25
a max 3 3.75 4.5
c min 0.15 0.15 0.15
max 0.6 0.6 0.6
da max 9.2 11.2 13.7
dw Grade A min 11.6 15.6 17.4
Grade B min 11.4 15.4 17.2
e Grade A min 14.38 18.9 21.1
Grade B min 14.2 18.72 20.88
k Nominal Size 5.3 6.4 7.5
Grade A min 5.15 6.22 7.32
max 5.45 6.58 7.68
Grade B min 5.06 6.11 7.21
max 5.54 6.69 7.79
k1 min 3.54 4.28 5.05
r min 0.4 0.4 0.6
s max=nominal size 13 17 19
Grade A min 12.73 16.73 18.67
Grade B min 12.57 16.57 18.48

Screw Thread
d		 M14 M16 M18
P Pitch Fine thread-1 1.5 1.5 2
Fine thread-2 - - 1.5
a max 4.5 4.5 6
c min 0.15 0.2 0.2
max 0.6 0.8 0.8
da max 15.7 17.7 20.2
dw Grade A min 20.5 22.5 25.3
Grade B min 20.1 22 24.8
e Grade A min 24.49 26.75 30.14
Grade B min 23.91 26.17 29.56
k Nominal Size 8.8 10 11.5
Grade A min 8.62 9.82 11.28
max 8.98 10.18 11.72
Grade B min 8.51 9.71 11.15
max 9.09 10.29 11.85
k1 min 5.96 6.8 7.8
r min 0.6 0.6 0.6
s max=nominal size 22 24 27
Grade A min 21.67 23.67 26.67
Grade B min 21.16 23.16 26.16

Screw Thread
d		 M20 M22 M24
P Pitch Fine thread-1 1.5 2 2
Fine thread-2 2 1.5 1.5
a max 6 6 6
c min 0.2 0.2 0.2
max 0.8 0.8 0.8
da max 22.4 24.4 26.4
dw Grade A min 28.2 30 33.6
Grade B min 27.7 29.5 33.2
e Grade A min 33.53 35.72 39.98
Grade B min 32.95 35.03 39.55
k Nominal Size 12.5 14 15
Grade A min 12.28 13.78 14.78
max 12.72 14.22 15.22
Grade B min 12.15 13.65 14.65
max 12.85 14.35 15.35
k1 min 8.5 9.6 10.3
r min 0.8 0.8 0.8
s max=nominal size 30 32 36
Grade A min 29.67 31.61 35.38
Grade B min 29.16 31 35

Screw Thread
d		 M27 M30 M33
P Pitch Fine thread-1 2 2 2
Fine thread-2 - - -
a max 6 6 6
c min 0.2 0.2 0.2
max 0.8 0.8 0.8
da max 30.4 33.4 36.4
dw Grade A min - - -
Grade B min 38 42.7 46.6
e Grade A min - - -
Grade B min 45.2 50.85 55.37
k Nominal Size 17 18.7 21
Grade A min - - -
max - - -
Grade B min 16.65 18.28 20.58
max 17.35 19.12 21.42
k1 min 11.7 12.8 14.4
r min 1 1 1
s max=nominal size 41 46 50
Grade A min - - -
Grade B min 40 45 49

Screw Thread
d		 M36 M39 M42
P Pitch Fine thread-1 3 3 3
Fine thread-2 - - -
a max 9 9 9
c min 0.2 0.3 0.3
max 0.8 1 1
da max 39.4 42.4 45.6
dw Grade A min - - -
Grade B min 51.1 55.9 59.9
e Grade A min - - -
Grade B min 60.79 66.44 71.3
k Nominal Size 22.5 25 26
Grade A min - - -
max - - -
Grade B min 22.08 24.58 25.58
max 22.92 25.42 26.42
k1 min 15.5 17.2 17.9
r min 1 1 1.2
s max=nominal size 55 60 65
Grade A min - - -
Grade B min 53.8 58.8 63.1

Screw Thread
d		 M45 M48 M52
P Pitch Fine thread-1 3 3 3
Fine thread-2 - - -
a max 9 9 9
c min 0.3 0.3 0.3
max 1 1 1
da max 48.6 52.6 56.6
dw Grade A min - - -
Grade B min 64.7 69.4 74.2
e Grade A min - - -
Grade B min 76.95 82.6 88.25
k Nominal Size 28 30 33
Grade A min - - -
max - - -
Grade B min 27.58 29.58 32.5
max 28.42 30.42 33.5
k1 min 19.3 20.9 22.8
r min 1.2 1.6 1.6
s max=nominal size 70 75 80
Grade A min - - -
Grade B min 68.1 73.1 78.1



All information is strictly informative