AS/NZS 4291.1:1995

Specifies materials, mechanical properties and marking requirements for steel bolts, screws and studs of property classes from 3.6 to 12.9 with ISO metric coarse and fine pitch threads and diameters up to and including 39 mm. The property class system is explained and recommended test programs for acceptance are given. Identical with and reproduced from ISO 898-1:1988.