DIN 7991 Hexagon Socket Flat Head Bolts are precision-engineered fasteners with a flat countersunk head and an internal hexagonal drive. These bolts, available in grade 10.9, offer exceptional strength and reliability. Their design allows flush installation, making them ideal for applications where aesthetics and space constraints matter. You’ll find them commonly used in machinery, construction, and industrial settings.
Product Data
Specification
D
D1
K
S
B
M3
6
1.7
2
12
M4
8
2.3
2.5
14
M5
10
2.8
3
16
M6
12
3.3
4
18
M8
16
4.4
5
22
M10
20
6.5
8
26
M12
24
6.5
8
30
M14
27
7
10
34
M16
30
7.5
10
38
M20
36
8.5
12
46
M24
39
14
14
54
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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