SS304 self tapping screw
Item:
Material:
Stainless steel 304
Dia.
3.2-8mm
Length
6-30mm
Hardness surface
≥450HV0.3
Hardness inside
270~390HV5(thread≤ST3.9) or 270~390HV10(thread≥ST4.2)
Technical parameters
Proof Strength N/mm2
Tensile Strength N/mm2
Elongation min. %
≥235
>450
≥25
Chemical composition %:
C
≤0.08
Mn
≤2
Si
≤1
P
≤0.045
S
≤0.03
Cr
18-20
Ni
8-10
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