DIN 604

Flat countersunk nib bolts



Thread Size
d		 M6 M8 M10 M12
P Pitch 1 1.25 1.5 1.75
Length of Thread
b		 L≤125 18 22 26 30
125＜L≤200 24 28 32 36
L＞200 / 41 45 49
dk max 12.55 16.55 19.65 24.65
min 11.45 15.45 18.35 23.35
s max 2.5 3 3.2 3.6
min 2.1 2.6 2.72 3.12
k max 4 5 5.5 7
α min 90° 90° 90° 90°
max 95° 95° 95° 95°
i min 2.8 3.5 4.2 5.7

Thread Size
d		 M16 M20 M24
P Pitch 2 2.5 3
Length of Thread
b		 L≤125 38 46 54
125＜L≤200 44 52 60
L＞200 57 65 73
dk max 32.8 32.8 38.8
min 31.2 31.2 37.2
s max 4.2 5.4 6.6
min 3.72 4.92 6.02
k max 9 11.5 13
α min 90° 60° 60°
max 95° 65° 65°
i min 7.5 5.7 6.7



b1 for L ≤ 125 mm
b2 for 125mm < L ≤ 200 mm
b3 for L > 200 mm


All information is strictly informative