UNI 5933 - 1988 Hexagon Socket Countersunk Head Screws - ISO Metric Coarse Pitch Thread - Product Grade A


Unit: mm
Screw Thread
d
M3 M4 M5 M6 M8 M10 M12 (M14) M16 (M18) M20
P Pitch
b ref.
dk max
min
s Nominal Size
max
min
t max
min
0.5 0.7 0.8 1 1.25 1.5 1.75 2 2 2.5 2.5
12 14 16 18 22 26 30 34 38 42 46
6 8 10 12 16 20 24 27 30 33 36
5.7 7.64 9.64 11.57 15.57 19.48 23.48 26.48 29.48 32.38 35.38
2 2.5 3 4 5 6 8 10 10 12 12
2.1 2.6 3.1 4.12 5.14 6.14 8.175 10.175 10.175 12.212 12.212
2.02 2.52 3.02 4.02 5.02 6.02 8.025 10.025 10.025 12.032 12.032
1.2 1.8 2.3 2.5 3.5 4.4 4.6 4.8 5.3 5.5 5.9
0.95 1.55 2.05 2.25 3.2 4.1 4.3 4.5 5 5.2 5.6
Alternative history
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