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Hexagon Flange Bolts

DIN 6921 - 1983

Display drawing:

Screw Thread M5 M6 M8 M1 M12 M14 M16 M20
D 5 6 8 1 12 14 16 20
P Coarse Thread 0.8 1 1.25 1.5 1.75 2 2 2.5
P Fine Thread-1 None None 1 1.25 1.5 1.5 1.5 1.5
P Fine Thread-2 None None None 1 1.25 None None None
B L≤125 16 18 22 26 30 34 38 46
B 125＜L≤200 None None 28 32 36 40 44 52
B L＞200 None None None None None None 57 65
C Min 1 1.1 1.2 1.5 1.8 2.1 2.4 3
Da Foam A Max 5.7 6.8 9.2 11.2 13.7 15.7 17.7 22.4
Da Foam B Max 6.2 7.4 10 12.6 15.2 17.7 20.7 25.7
Dc Max 11.8 14.2 18 22.3 26.6 30.5 35 43
Ds Max 5 6 8 10 12 14 16 20
Ds Min 4.82 5.82 7.78 9.78 11.73 13.73 15.73 19.67
Du Max 5.5 6.6 9 11 13.5 15.5 17.5 22
Dw Min 9.8 12.2 15.8 19.6 23.8 27.6 31.9 39.9
E Min 8.71 10.95 14.26 16.5 17.62 19.86 23.15 29.87
F Max 1.4 2 2 2 3 3 3 4
K Max 5.4 6.6 8.1 9.2 11.5 12.8 14.4 17.1
K1 Min 2 2.5 3.2 3.6 4.6 5.1 5.8 6.8
R1 Min 0.25 0.4 0.4 0.4 0.6 0.6 0.6 0.8
R2 Max 0.3 0.4 0.5 0.6 0.7 0.9 1 1.2
R3 Min 0.1 0.1 0.15 0.2 0.25 0.3 0.35 0.4
R4 3 3.4 4.3 4.3 6.4 6.4 6.4 8.5
S Max 8 10 13 15 16 18 21 27
S Min 7.78 9.78 12.73 14.73 15.73 17.73 20.67 26.67
T Max 0.15 0.2 0.25 0.3 0.35 0.45 0.5 0.65
T Min 0.05 0.05 0.1 0.15 0.15 0.2 0.25 0.3