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ISO DIS 3506-5

Fasteners - Mechanical properties of corrosion-resistant stainless steel fasteners - Part 5: Special fasteners (also including fasteners from nickel alloys) for high temperature applications

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Organization: ISO
Publication Date: 10 October 2019
Status: active
Page Count: 50
ICS Code (Other fasteners): 21.060.99
scope:

This document specifies the mechanical and physical properties of bolts, screws, studs and nuts, with coarse pitch thread and fine pitch thread made of corrosion-resistant stainless steels and nickel alloys, intended for use at high temperatures up to 800 °C.

NOTE Fasteners specified in this document are also suitable when used at low temperatures, typically down to ‑ 50 °C. For more information, see ISO 3506-6.

The term "fasteners" is used in this document when bolts, screws, studs and nuts are considered all together.

It specifies fastener properties in relation to three material categories: martensitic steels, precipitation hardening austenitic steels and nickel alloys.

ISO 3506-6 provides general rules and additional technical information on suitable stainless steels and nickel alloys as well as their properties.

This document applies to fasteners:

- with ISO metric thread in accordance with ISO 68-1,

- with diameter/pitch combinations in accordance with ISO 261 and ISO 262,

- with coarse pitch thread M3 to M39, and fine pitch thread M8×1 to M39×3,

- with thread tolerances in accordance with ISO 965-1 and ISO 965-2, and

- of any shape but with full loadability.

Stainless steels and Nickel alloys grades may be used for sizes outside the diameter limits of this document (i.e. for d < 3 mm or d > 39 mm), provided that all applicable chemical, mechanical and physical requirements are met.

Fasteners with reduced loadability (i.e. thin nuts and bolts, screws and studs with head or shank weaker than the threaded shank) are not dealt with in this document.

It does not specify requirements for functional properties such as:

- Torque/clamp force properties

- Shear strength

- Fatigue resistance, or

- Weldability

Document History

ISO DIS 3506-5
October 10, 2019
Fasteners - Mechanical properties of corrosion-resistant stainless steel fasteners - Part 5: Special fasteners (also including fasteners from nickel alloys) for high temperature applications
This document specifies the mechanical and physical properties of bolts, screws, studs and nuts, with coarse pitch thread and fine pitch thread made of corrosion-resistant stainless steels and nickel...

References

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