Mekaniska system och komponenter: allmänt

This document specifies an inspection procedure to be used by the purchaser where no prior agreement exists. It also specifies a reference acceptance procedure for acceptance or rejection of an inspection lot, when no agreement can be reached between the purchaser and the supplier, or where conformance to specification is disputed. It applies to inspection lots of bolts, screws, studs, nuts, pins, washers, rivets and other related fasteners. This document applies to fasteners not intended for high volume machine assembly, special-purpose applications or specially engineered applications requiring more advanced in-process control and lot traceability. For in-process control or final inspection by the manufacture and sorting, see ISO 16426.

This document specifies width across flats dimensions for fasteners with external hexagon drive, for use in appropriate product standards and other relevant documents, e.g. for parts per drawing. This document is applicable to hexagon head bolts, screws and nuts with ISO metric thread, with or without flange. It may also be applicable to other types of fasteners (e.g. square head bolts, tapping screws with hexagon head, cylindrical nuts with flats, etc.).

This document specifies the dimensions (in millimetres), nominal initial forces and types of gas springs.

It is applicable to gas springs with increased spring force and compact built height of type 1 700 to 200 000, pressurized with nitrogen with a nominal initial force of between 1 700 N (with a tolerance of ±5 %) and 200 000 N (with a tolerance of ±5 %), for use in press tools.

It also specifies marking, technical delivery conditions and designation.

NOTE      Specifications of mounting accessories for gas springs are given in ISO 11901‑2.