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Hexagon Flange Bolts

DIN 6921 - 1983

Display drawing:

Screw Thread M20
D 20
P Coarse Thread 2.5
P Fine Thread-1 1.5
P Fine Thread-2 None
B L≤125 46
B 125＜L≤200 52
B L＞200 65
C Min 3
Da Foam A Max 22.4
Da Foam B Max 25.7
Dc Max 43
Ds Max 20
Ds Min 19.67
Du Max 22
Dw Min 39.9
E Min 29.87
F Max 4
K Max 17.1
K1 Min 6.8
R1 Min 0.8
R2 Max 1.2
R3 Min 0.4
R4 8.5
S Max 27
S Min 26.67
T Max 0.65
T Min 0.3