ISO 21670:2014 specifies characteristics for hexagon weld nuts with flange, with sizes M5 to M16 (coarse thread) or D = 8 mm to 16 mm (fine pitch thread), of product grade A. Weld nuts conforming to this International Standard are suitable for use with bolts of property classes up to 10.9 according to ISO 898-1.

ISO 21572:2013 provides general guidelines and performance criteria for methods for the detection and/or quantification of specific proteins or protein(s) of interest [POI(s)] in a specified matrix. These general guidelines address existing antibody based methods. Methods other than those described in Annex A or Annex B can also detect the POI. The same criteria as 

ISO 21563:2013 specifies the requirements and tests for helping determine whether the elastic aqueous agar and alginate hydrocolloid dental impression materials, as prepared for retail marketing, are of the quality needed for their intended purposes. It also specifies requirements for labelling and instructions for use. NOTE This International Standard specifies no requirements or tests for

ISO 21216:2012 covers the open systems interconnection (OSI) Layer 1 physical layer (PHY) air interface for a communications medium operating in the 60 GHz millimetric frequency range by providing the parameters for medium range, medium-to-high speed wireless communications in the ITS sector. It specifes the parameters required to interface the Layer 1 of such a

ISO 21210:2012 specifies networking protocol functionalities related to IPv6 networking between two or more ITS stations communicating over the global Internet communication network. The International Standard assumes that the reader is familiar with IETF specifications found in “Request for Comments” (RFCs) of individual IPv6 protocol blocks used within this International Standard. This International Standard does