Countersinks for countersunk head screws with head configuration in accordance with ISO 7721 Ingestion-build-107062 the new standard includes:

the new standard includes:

For wide flats maximum permissible thickness variation was introduced

002 % (m/m) to 0

Steel fibre concrete manholes are not manufactured in the United Kingdom and so have been excluded from this part of BS 5911

each fabric and article have a reference comprising three letters

Countersinks for countersunk head screws with head configuration in accordance with ISO 7721 Ingestion-build-107062 the new standard includes:1 Scope This International Standard specifies the dimensions and designation of countersinks for countersunk head screws with a head configuration in accordance with ISO 7721. This International Standard is applicable to the following types of screws: slotted countersunk flat head screws according to ISO 2009; slotted countersunk raised head screws according to ISO 2010; slotted countersunk flat head tapping screws according to ISO 1482; slotted