BS A 281; A 282 [...]:1981

This standard BS A 281; A 282 [...]:1981 Specification for hexagon (thin) self-locking nuts with non-metallic locking inserts. Metric series is classified in these ICS categories:

• 49.030.30 Nuts

These British Standards specify materials, dimensions, protective treatment, identification and marking, together with part numbers for hexagon (thin) self-locking nuts, with non-metallic inserts and having ISO MJ screw threads.

They are primarily intended for use on non-structural aerospace applications and have operational temperature limitations of -40 °C to +120 °C.

For an interim period, coarse thread pitch series for size codes 080, 100 and 120 have been included in appendix A for those users wishing to specify them.