2017BS ISO 812:2017 Rubber, vulcanized or thermoplastic. Determination of low-temperature brittleness
2011BS EN ISO 7047:2011 Raised countersunk head screws (common head style) with type H or type Z cross recess. Product grade A
0000 BS EN ISO 7047:1995
1991BS 7433-3:1991 Cross recessed machine screws - Specification for raised countersunk head screws product grade A
BS EN ISO 7047:2011 Raised countersunk head screws (common head style) with type H or type Z cross recess. Product grade A was changed to BS ISO 812:2017 Rubber, vulcanized or thermoplastic. Determination of low-temperature brittleness.