International Organization for Standardization (ISO)
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ISO 7072:1993
Scope
Specifies the dimensions and certain requirements (material, anti-corrosive treatment, pre-stress of the spring-retaining device) for linch pins and spring pins which are used for the three-point hitch and for numerous fastening purposes in farm work and agricultural equipment.
ISO 7072:1993 history
1993ISO 7072:1993 Tractors and machinery for agriculture and forestry; linch pins and spring pins; dimensions and requirements