BS EN ISO 3506-1:2020 Fasteners. Mechanical properties of corrosion-resistant stainless steel fasteners. Bolts, screws and studs with specified grades and property classes

BS EN ISO 3506-1:2020

Fasteners. Mechanical properties of corrosion-resistant stainless steel fasteners. Bolts, screws and studs with specified grades and property classes

Status : Current   Published : April 2020



What is BS EN ISO 3506-1:2020 about?

This is the first in a six-part series of international standards on the mechanical and physical properties of stainless steel fasteners. BS EN ISO 3506-1:2020 covers specific types of bolt, screw and stud.

Who is BS EN ISO 3506-1:2020 for?

  • Manufacturers and distributors of stainless steel fasteners
  • Structural and consulting engineers
  • Construction and civil engineering contractors and larger sub-contractors
  • Test houses and laboratories
  • Industries associated with oil and gas production and distribution

Why should you use BS EN ISO 3506-1:2020?

It specifies the mechanical and physical properties of bolts, screws and studs, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels, when tested at the ambient temperature range of 10 °C to 35 °C.

It specifies property classes in relation to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) steel grades for fasteners.

It applies to bolts, screws and studs with:

—      ISO metric thread in accordance with ISO 68-1

—      Diameter/pitch combinations in accordance with ISO 261 and ISO 262

—      Coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3

—      Thread tolerances in accordance with ISO 965-1 and ISO 965-2

—      Specified property classes and of any shape

 Together with BS EN ISO 3506-2:2020 and BS ISO 3506-6:2020 it

provides additional advice and guidance for most applications where these products will be required. 

There are other standards which deal specifically with specialized areas such as oil and gas but this considerably revised document provides an excellent foundation for any assessment.

NOTE: This standard does not specify requirements for functional properties such as: torque/clamp force properties, shear strength, fatigue resistance, or weldability.

BS EN ISO 3506-1:2020 can help users achieve UN Sustainable Development Goal 9 on industry, innovation and infrastructure because it contributes to the building of resilient infrastructure.


What’s new about BS EN ISO 3506-1:2020?

The standard has been revised to reflect the standardization of duplex stainless steels. The main changes in BS EN ISO 3506-1:2020 are:

a)       Annexes common to several parts of the ISO 3506 series have been withdrawn from this document and are now included in a new document (ISO 3506-6)

b)      Duplex (austenitic-ferritic) stainless steels for property classes 70, 80 and 100 have been added

c)       Property class 100 for austenitic stainless steel grades as well as grade A8 have been added

d)      Finish has been added

e)      The matching of stainless steel bolt and nut grades has been added

f)        Calculated minimum ultimate tensile loads and minimum loads at 0,2 % non-proportional elongation and rounding rules have been added

g)       Reduced loadability for fasteners due to head or shank design has been added

h)      Requirements and guidance for inspection procedures have been added

i)        Operational temperature ranges have been clarified

j)        The applicability of test methods, also in relation to full or reduced loadability, has been added

k)       The tensile test procedure has been entirely amended, and application to fasteners with reduced loadability has been added

l)        The wedge tensile test and hardness test have been improved

m)    Marking and labelling  have been improved, and fasteners with reduced loadability have been included

n)      Mechanical properties at elevated temperatures and application at low temperatures have been improved

The structure and content of this document have been brought in line with ISO 898-1

Standard NumberBS EN ISO 3506-1:2020
TitleFasteners. Mechanical properties of corrosion-resistant stainless steel fasteners. Bolts, screws and studs with specified grades and property classes
Publication Date20 April 2020
Normative References(Required to achieve compliance to this standard)ISO 6506-1, ISO 16228, ISO 3506-6, ISO 6892-1, ISO 9513, ISO 6507-1, ISO 1891-4, ISO 6508-1, ISO 7500-1
Informative References(Provided for Information)ISO 16048, EN 10088 (all parts), ISO 965-1, ISO 724, ISO 898-1, ISO 273, ISO 68-1, ISO 261, ISO 3506-5, ISO 262, ISO 3506-3, ISO 3506-2, ISO 965-2, EN 10269, ISO 16426
ReplacesBS EN ISO 3506-1:2009
International RelationshipsEN ISO 3506-1:2020,ISO 3506-1:2020
Draft Superseded By18/30333917 DC
DescriptorsFasteners, Austenitic steels, Torsion testing, Mechanical properties of materials, Classification systems, Bolts, Tensile testing, Stainless steels, Hardness testing, Corrosion-resistant steels, Chemical composition, Screws (bolts), Intergranular corrosion, Threads, Test equipment, Elongation at fracture, Studs (fasteners), Designations, Torsional strength, Threaded fasteners, Martensitic steels, Tensile strength, Grades (quality), Hardness, Tensile stress, Mechanical testing, Ferritic steels, Marking, Steels, External-thread fasteners, Torque, Temperature
Title in FrenchFixations. Caractéristiques mécaniques des fixations en acier inoxydable résistant à la corrosion Vis, goujons et tiges filetées de grades et classes de qualité spécifiés
Title in GermanMechanische Verbindungselemente. Mechanische Eigenschaften von Verbindungselementen aus korrosionsbeständigen nichtrostenden Stählen Schrauben mit festgelegten Stahlsorten und Festigkeitsklassen
ISBN978 0 580 92492 7
File Size1.453 MB

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