NA 067

DIN Standards Committee Fasteners

Project

Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes - Coarse thread and fine pitch thread

Abstract

ISO 898-1:2013 specifies mechanical and physical properties of bolts, screws and studs made of carbon steel and alloy steel when tested at an ambient temperature range of 10 °C to 35 °C. Fasteners (the term used when bolts, screws and studs are considered all together) that conform to the requirements of ISO 898-1:2013 are evaluated at that ambient temperature range. They might not retain the specified mechanical and physical properties at elevated temperatures (see Annex B) and/or lower temperatures. Certain bolts and screws might not fulfil the tensile or torsional requirements of ISO 898-1:2013 because the geometry of their heads reduces the shear area in the head compared to the stress area in the thread. These include bolts and screws having a low or countersunk head. ISO 898-1:2013 is applicable to bolts, screws and studs made of carbon steel or alloy steel, having triangular ISO metric screw thread in accordance with ISO 68-1, with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3, with diameter/pitch combinations in accordance with ISO 261 and ISO 262, and having thread tolerances in accordance with ISO 965-1, ISO 965-2 and ISO 965-4. It is not applicable to set screws and similar threaded fasteners not under tensile stress (see ISO 898-5). It does not specify requirements for such properties as weldability, corrosion resistance resistance to shear stress, torque/clamp force performance (for test method, see ISO 16047), or fatigue resistance.

Begin

2023-12-07

WI

00185447

Planned document number

DIN EN ISO 898-1 rev

Project number

06702425

Responsible national committee

NA 067-00-02 AA - Fasteners with metric external thread  

Responsible european committee

CEN/TC 185 - Fasteners  

Responsible international committee

ISO/TC 2/SC 11/WG 1 - Revision of ISO 898-1  

previous edition(s)

Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes - Coarse thread and fine pitch thread (ISO 898-1:2013); German version EN ISO 898-1:2013
2013-05

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Contact

Dipl.-Ing.

Torsten Diether

Am DIN-Platz, Burggrafenstr. 6
10787 Berlin

Tel.: +49 30 2601-2357
Fax: +49 30 2601-42357

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