The ISO 7380-1 standard specifies characteristics for hexagon socket button head screws with reduced loadability due to their head design. These screws are featuring metric coarse pitch threads ranging from M3 to M16. Notably, their head dimensions and hexagon socket penetration contribute to their reduced loadability. For high-strength applications, consider the 10.9 hardness class. These screws find use in various industries, combining reliability and compact design.
Product Data
Specification
Thread d
M3
M4
M5
M6
M8
M10
M12
M16
p
0.5
0.7
0.8
1
1.25
1.5
1.75
2
b
ref
18
20
22
24
28
32
36
44
da
max
3.6
4.7
5.7
6.8
9.2
11.2
13.7
17.7
dk
max
5.7
7.6
9.5
10.5
14
17.5
21
28
min
5.4
7.24
9.14
10.07
13.57
17.07
20.48
27.48
dl
ref
2.6
3.8
5
6
7.7
10
12
16
ds
max
3
4
5
6
8
10
12
16
min
2.86
3.82
4.82
5.82
7.78
9.78
11.73
15.73
dw
min
5
6.84
8.74
9.57
13.07
16.57
19.68
26.68
e
min
2.303
2.873
3.443
4.583
5.723
6.863
9.149
11.429
k
max
1.65
2.2
2.75
3.3
4.4
5.5
6.6
8.8
min
1.4
1.95
2.5
3
4.1
5.2
6.24
8.44
r1
max
3.7
4.6
5.75
6.15
7.95
9.8
11.2
15.3
min
3.3
4.2
5.25
5.65
7.45
9.2
10.5
14.5
rs
min
0.1
0.2
0.2
0.25
0.4
0.4
0.6
0.6
rt
min
0.3
0.4
0.45
0.5
0.7
0.7
1.1
1.1
s
nom
2
2.5
3
4
5
6
8
10
max
2.08
2.58
3.08
4.095
5.14
6.14
8.175
10.175
min
2.02
2.52
3.02
4.02
5.02
6.02
8.025
10.025
t
min
1.04
1.3
1.56
2.08
2.6
3.12
4.16
5.2
w
min
0.2
0.3
0.38
0.74
1.05
1.45
1.63
2.25
Applications
Building Insulation: Primarily used in the installation of thermal insulation systems in residential, commercial, and industrial buildings.
External Wall Insulation: Often used in External Thermal Insulation Composite Systems (ETICS) to fix insulation boards to external walls.
Roof Insulation: Suitable for securing insulation materials on roofs to enhance energy efficiency and thermal performance.
Floor Insulation: Utilized in floor insulation systems to prevent heat loss through the flooring and improve overall energy efficiency.
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