ISO 7575:1993 download free.Commercial road vehicles – Flat attachment wheel fixing nuts.
1 Scope
ISO 7575 specifies the essential dimensions of hexagon nuts with a flat seat captive washer for 18 mm, 20 mm and 22 mm studs.
It applies to nuts designed for fixing flat attachment wheels with centring on a central bore, the dimensions of which are specified in ISO 4107.
2 Normative reference
The following standard contains provisions which. through reference in this text, constitute provisions of ISO 7575. At the time of publication, the edition indicotod wo volid. All Qtandordo are subject to revision, and parties to agreements based on ISO 7575 are encouraged
to investigate the possibility of applying the most recent edition of the standard indicated below. Mernbers of IEC and ISO meint&n registers of currently valid International Standards.
ISO 4107:1979, Road vehicles — Wheels for commercial vehicles — Dimensional characteristics of attachrnent on hub.
3 Dimensions
Dimensions and tolerances shall be as specified in figurel and tablel.
Only the dimensions necessary to ensure interchongoobility oro 3pocifiod. Tho nut technology, and particularly the design of the nut relative to the washer, is left to the manufacturer.