AS 4291.1-2000

Specifies materials, mechanical properties and marking requirements for steel bolts, screws and studs property clases 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. This Standard is identical with and has been reproduced from ISO 898-1:1999.