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Two-thread countersunk (flat) head tapping screws with cross rocessed for plastics

UNI 9709 - 1990

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意大利UNI 9709 - 1990 UNI9709 9709UNI Two-thread countersunk (flat) head tapping screws with cross rocessed for plastics
Thread Size
3 3.5 4 4.5 5 5.5 6 7
d max
min
d2 max
min
d3 max
min
d4 max
min
P
y max
y1 max
dk max
min
k
r max
Socket No.
M2
Penetration depth max
min
M1
Penetration depth max
min
3.15 3.65 4.1 4.65 5.1 5.6 6.1 7.15
2.95 3.35 3.8 4.35 4.8 5.3 5.8 6.85
2.59 2.89 3.29 3.59 3.94 4.44 4.94 5.89
2.39 2.59 2.99 3.29 3.64 4.14 4.64 5.59
1.95 2.15 2.45 2.65 3 3.5 3.9 4.85
1.75 1.85 2.15 2.35 2.7 3.2 3.6 4.55
1.9 2 2.3 2.5 2.8 3.25 3.65 4.6
1.7 1.8 2.1 2.3 2.6 3.05 3.45 4.35
2.1 2.5 2.7 2.8 3 3 3.1 3.5
2.3 2.6 3 3.2 3.7 4.3 4.8 5.8
1.9 2.4 2.6 3 3.6 3.9 4 4.2
4.9 5.5 6.8 7.5 8.1 9.5 10.8 12.4
4.6 5.2 6.44 7.14 7.74 9.14 10.37 11.97
1.5 1.7 2.1 2.3 2.5 3 3.4 3.8
0.9 1.1 1.4 1.5 1.6 1.9 2.1 2.4
1 1 2 2 2 2 3 3
2.8 3 4.2 4.4 4.6 5 6.3 7
1.73 2.01 2.31 2.51 2.72 3.1 3.18 3.84
1.48 1.76 1.85 2.05 2.26 2.64 2.72 3.38
2.7 3 4.2 4.6 4.7 5.1 6.8 7.1
1.55 1.7 2.12 2.53 2.62 3.1 3.53 3.91
1.25 1.4 1.62 2.03 2.11 2.59 2.95 3.33

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