BS EN ISO 898-1:1999 - Page 2

Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs

Requirements for the mechanical properties of bolts, screws and studs made of carbon steel and alloy steel tested at an ambient temperature.

This part of ISO 898 specifies the mechanical properties of bolts, screws and studs made of carbon steel and alloy steel when tested at an ambient temperature range of 10 degrees C to 35 degrees C.

Products conforming to the requirements of this International Standard are evaluated only in the ambient temperature range and may not retain the specified mechanical and physical properties at higher and lower temperatures. Attention is drawn to Annex A which provides examples of lower yield stress and stress at 0,2 % non-proportional elongation at elevated temperatures.

This part of ISO 898 applies to bolts, screws and studs:

- with coarse pitch thread M1.6 to M39, and fine pitch thread M8 × 1 to M39 × 3;

- with triangular ISO thread in accordance with ISO 68-1;

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

- with thread tolerance in accordance with ISO 965-1 and ISO 965-2;

- made of carbon steel or alloy steel.

This International Standard does not apply to set screws and similar threaded fasteners not under tensile stresses which are specified in ISO 898-5.

This International Standard supersedes BS EN 20898-1:1992 which is withdrawn. This standard includes the following cross references:

ISO 83:1976, ISO 273:1979, ISO 724:1978, ISO 898-2:1992, ISO 898-7:1992,

ISO 6157-1:1988, ISO 6157-3:1988, ISO 6506:1981, ISO 6507-1:1997,

ISO 6508:1986, ISO 6892:1998.