ISO 5674:2004规定了测定农业和林业用拖拉机和机械PTO驱动轴防护装置强度和耐磨性的实验室试验及其验收标准。它打算与ISO 5673结合使用。 ISO 5674:2004适用于此类PTO驱动轴护罩及其约束装置的测试。本标准不适用于作为台阶使用的防护装置的测试。它也不适用于受国家法规限制使用的防护装置类型。

ISO 5674:2004 specifies laboratory tests for determining the strength and wear resistance of guards for PTO drive shafts on tractors and machinery used in agriculture and forestry, and their acceptance criteria. It is intended to be used in combination with ISO 5673. ISO 5674:2004 is applicable to the testing of such PTO drive shaft guards and their restraining means. It is not applicable to the testing of guards designed and constructed to be used as steps. Neither is it applicable to guard types whose use is limited by national regulations.