1 Scope
This document specifies the mechanical and physical properties of tapping screws made
of corrosion resistant austenitic, martensitic, ferritic and duplex stainless steels,
with specified grades and hardness classes.
ISO 3506-6
provides general rules and additional technical information on suitable stainless
steels and their properties (detailed properties of stainless steel grades, corrosion
behaviour with regards to pitting, crevice and intergranular corrosion, magnetic properties,
etc.).
WARNING Tapping screws conforming to the requirements of this document are tested at the ambient
temperature range of 10 °C to 35 °C and are used in applications ranging from –20 °C
to +150 °C. It is possible that they do not retain the specified mechanical and physical
properties at lower and/or elevated temperatures. Therefore, it is the responsibility
of the user to determine the appropriate choices based on service environment conditions
of the assembly (see also Clauses 5 and 6).
This document applies to tapping screws with threads ST2,2 to ST8, in accordance with
ISO 1478.
This document does not apply to tapping screws with special properties, such as weldability.