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Click Specification

(Non-preferred) dimensions in parentheses.

Same specifications, different dimensions for other parts.

Unit:mm

Hexagon Head Screws with Metric Fine Pitch Thread - Product Grades A and B

EN 28676 - 1991

Display drawing:

欧标EN 28676 - 1991 EN28676 28676EN Hexagon Head Screws with Metric Fine Pitch Thread - Product Grades A and B
Screw Thread
d
M8 M10 (M10) M12 (M12) (M14) M16 (M18) M20 (M20) (M22) M24
P Pitch
a max
min
c max
min
da max
dw Gread A min
Gread B min
e Gread A min
Gread B min
k Nominal Size
Gread A max
min
Gread B max
min
k1 Gread A min
Gread B min
r min
s max=nominal size
Gread A min
Gread B min
1 1 1.25 1.5 1.25 1.5 1.5 1.5 1.5 2 1.5 2
3 3 4 4.5 4 4.5 4.5 4.5 4.5 6 4.5 6
1 1 1.25 1.5 1.25 1.5 1.5 1.5 1.5 2 1.5 2
0.6 0.6 0.6 0.6 0.6 0.6 0.8 0.8 0.8 0.8 0.8 0.8
0.15 0.15 0.15 0.15 0.15 0.15 0.2 0.2 0.2 0.2 0.2 0.2
9.2 11.2 11.2 13.7 13.7 15.7 17.7 20.2 22.4 22.4 24.4 26.4
11.63 14.63 14.63 16.63 16.63 19.37 22.49 25.34 28.19 28.19 31.71 33.61
/ / / / / / 22 24.85 27.7 27.7 31.35 33.25
14.38 17.77 17.77 20.03 20.03 23.36 26.75 30.14 33.53 33.53 37.72 39.98
/ / / / / / 26.17 29.56 32.95 32.95 37.29 39.55
5.3 6.4 6.4 7.5 7.5 8.8 10 11.5 12.5 12.5 14 15
5.45 6.58 6.58 7.68 7.68 8.98 10.18 11.715 12.715 12.715 14.215 15.215
5.15 6.22 6.22 7.32 7.32 8.62 9.82 11.285 12.285 12.285 13.785 14.785
/ / / / / / 10.29 11.85 12.85 12.85 14.35 15.35
/ / / / / / 9.71 11.15 12.15 12.15 13.65 14.65
3.61 4.35 4.35 5.12 5.12 6.03 6.87 7.9 8.6 8.6 9.65 10.35
/ / / / / / 6.8 7.81 8.51 8.51 9.56 10.26
0.4 0.4 0.4 0.6 0.6 0.6 0.6 0.6 0.8 0.8 0.8 0.8
13 16 16 18 18 21 24 27 30 30 34 36
12.73 15.73 15.73 17.73 17.73 20.67 23.67 26.67 29.67 29.67 33.38 35.38
/ / / / / / 23.16 26.16 29.16 29.16 33 35
Screw Thread
d
(M27) M30 (M33) M36 (M39) M42 (M45) M48 (M52) M56 (M60) M64
P Pitch
a max
min
c max
min
da max
dw Gread A min
Gread B min
e Gread A min
Gread B min
k Nominal Size
Gread A max
min
Gread B max
min
k1 Gread A min
Gread B min
r min
s max=nominal size
Gread A min
Gread B min
2 2 2 3 3 3 3 3 4 4 4 4
6 6 6 9 9 9 9 9 12 12 12 12
2 2 2 3 3 3 3 3 4 4 4 4
0.8 0.8 0.8 0.8 1 1 1 1 1 1 1 1
0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
30.4 33.4 36.4 39.4 42.4 45.6 48.6 52.6 56.6 63 67 71
/ / / / / / / / / / / /
38 42.75 46.55 51.11 55.86 59.95 64.7 69.45 74.2 78.66 83.41 88.16
/ / / / / / / / / / / /
45.2 50.85 55.37 60.79 66.44 71.3 76.95 82.6 88.25 93.56 99.21 104.86
17 18.7 21 22.5 25 26 28 30 33 35 38 40
/ / / / / / / / / / / /
/ / / / / / / / / / / /
17.35 19.12 21.42 22.92 25.42 26.42 28.42 30.42 33.5 35.5 38.5 40.5
16.65 18.28 20.58 22.08 24.58 25.58 27.58 29.58 32.5 34.5 37.5 39.5
/ / / / / / / / / / / /
11.66 12.8 14.41 15.46 17.21 17.91 19.31 20.71 22.75 24.15 26.25 27.65
1 1 1 1 1 1.2 1.2 1.6 1.6 2 2 2
41 46 50 55 60 65 70 75 80 85 90 95
/ / / / / / / / / / / /
40 45 49 53.8 58.8 63.1 68.1 73.1 78.1 82.8 87.8 92.8
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