1. Bolts, screws and studs with specified property classes – Coarse thread and fine pitch thread
2. Nuts with specified proof load values – Coarse thread
5. Set screws and similar threaded fasteners not under tensile stresses
6. Nuts with specified proof load values – Fine pitch thread
7. Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm
With exception to part 7, which defines test standards, the parts of this standard define properties for fasteners made of carbon steel and alloy steel. The standards define that the testing must be performed at ambient temperatures, which is defined as between 10 and 35 °C (50 and 95 °F). The standards do not cover fasteners that would otherwise apply but require special properties, such as weldability or corrosion resistance.
Part 1 defines the mechanical properties of bolts, screws, and studs. It specifically applies to fasteners that have an ISO metric screw thread as defined in ISO 68-1. The properties are defined for M1.6-39 with coarse threads and M8-39 with fine threads. The diameter and pitch combinations must adhere to ISO 261 and ISO 262 and the thread tolerances must adhere to ISO 965 parts 1, 2, and 4.
Part 2 defines the mechanical properties for coarse threaded nuts up to an M39 size and a height of at least half the nominal diameter.
Part 6 is the same as part 2 except for fine threaded nuts that range from M8 to M39. Note that the working temperature range for these fasteners is −50 to 300 °C (−58 to 572 °F)