The Stainless Steel DIN 9021 Flat Washer which made from corrosion-resistant stainless steel, is a versatile fastener used in various applications. This flat washer's outer diameter is approximately three times the inner diameter (d1). Commonly used to distribute load, prevent surface damage, and improve stability in assemblies
Product Data
Bolt Size
Inside Diameter
Outside Diameter
Thickness
M3
3.2mm
9.0mm
0.8mm
M3.5
3.7mm
11.0mm
0.8mm
M4
4.3mm
12mm
1.0mm
M5
5.3mm
15mm
1.2mm
M6
6.4mm
18.0mm
1.6mm
M8
8.4mm
24mm
2.0mm
M10
10.5mm
30mm
2.5mm
M12
13mm
36mm
3.0mm
M14
15mm
42mm
3.0mm
M16
17mm
48mm
3.0mm
M18
20mm
54mm
4.0mm
M20
22mm
60mm
4.0mm
M22
24mm
66mm
5.0mm
M24
26mm
72mm
5.0mm
M27
29mm
81mm
6.0mm
M30
33mm
90mm
8.0mm
M33
36mm
99mm
8.0mm
M36
39mm
108mm
10.0mm
M39
42mm
117mm
10.0mm
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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