DIN 478

Square head bolts with collar

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Thread Size
d		 M5 M6 M8 M10
P Pitch 0.8 1 1.25 1.5
b +2P，0 L≤125 16 18 22 26
L＞125 - - - 32
c min 1.88 1.88 1.88 2.88
max 2.12 2.12 2.12 3.12
dc max=nominal size 9.5 10.5 13.5 16.5
min 8.92 9.8 12.8 15.8
ds max=nominal size 5 6 8 10
min 4.82 5.82 7.78 9.78
k min 6.82 7.82 9.82 12.78
max 7.18 8.18 10.18 13.22
s max=nominal size 5 6 8 10
min 4.82 5.82 7.78 9.78
e max=nominal size 6.5 8 10 13
min 5.92 7.42 9.42 12.3

Thread Size
d		 M12 M16 M16
P Pitch 1.75 2 2
b +2P，0 L≤125 30 38 38
L＞125 36 44 44
c min 2.88 3.85 3.85
max 3.12 4.15 4.15
dc max=nominal size 19.5 25 25
min 18.66 24.16 24.16
ds max=nominal size 12 16 16
min 11.73 15.73 15.73
k min 14.78 19.74 19.74
max 15.22 20.26 20.26
s max=nominal size 13 16 17
min 12.73 15.73 16.73
e max=nominal size 17 21 22
min 16.3 20.16 21.16

Thread Size
d		 M20 M20 M24
P Pitch 2.5 2.5 3
b +2P，0 L≤125 46 46 54
L＞125 52 52 60
c min 4.85 4.85 5.85
max 5.15 5.15 6.15
dc max=nominal size 31 31 36
min 30 30 35
ds max=nominal size 20 20 24
min 19.67 19.67 23.67
k min 24.74 24.74 27.74
max 25.26 25.26 28.26
s max=nominal size 21 22 24
min 20.67 21.67 23.67
e max=nominal size 27 28 32
min 26.16 27.16 31



All information is strictly informative