Plain washers. Normal series. Product grade A not-for-sale of aerated fire fighting foam

of aerated fire fighting foam concentrate and water

BS EN 755-4:2008 includes some technical changes with respect to BS EN 755-4:1995

Ceramic hydroxyapatite

i)        Clause 7 generally updated for high voltage (HV) and low voltage (LV) cable routes

Plain washers. Normal series. Product grade A not-for-sale of aerated fire fighting foam1 Scope This International Standard specifies the characteristics of normal series, product grade A plain washers in the 200 HV and 300 HV hardness classes and of nominal sizes (nominal thread diameters) ranging from 1,6 mm to 64 mm inclusive. Washers of hardness class 200 HV are suitable for hexagon bolts and screws of product grades A and in property classes up to and including 8. 8; hexagon nuts of product grades A and in property classes up to and