1.1本规范适用于按细度等级对羊毛上衣、马海毛上衣、羊毛纱、马海毛纱、羊毛织物和精纺马海毛织物中的纤维进行分类。 笔记 1-有关羊毛、马海毛和羊驼的细度规格，请参阅规格 D3991 和 D2252 . ====意义和用途====== 这些规范被认为是按等级对羊毛上衣或马海毛上衣进行分类的满意标准，并为接受商业装运提供了依据。

1.1 These specifications are applicable in the classification, by fineness grade, of the fiber in wool top, mohair top, wool yarns, mohair yarns, wool fabrics, and mohair fabrics of the worsted type. Note 1—For fineness specifications for wool, mohair, and alpaca, refer to Specifications D3991 and D2252 . ====== Significance And Use ====== These specifications are considered satisfactory for classifying wool top or mohair top by grade and provide a basis for acceptance of commercial shipments.