本标准确定了符合美国标准统一微型螺纹ASA B1的开槽头微型螺钉的头部类型、尺寸和长度。10.本标准基于通过研究最大使用行业得出的信息。在数据表中包含四种头部类型和给定的螺纹尺寸，并不意味着本标准中描述的所有这些都是库存生产项目。表中以粗体显示了常用的首选直径-节距组合。 请消费者查阅制造商目录，以获取当前库存生产微型螺钉的清单。

This standard establishes head types, their dimensions, and lengths of slotted head miniature screws, threaded in conformance with American Standard Unified Miniature Screw Threads, ASA B1.10.This standard is predicated upon information derived through research of the maximum using industries. The inclusion of four head types and the given thread sizes in the data tables is not intended to imply that all of those described in this standard are stock production items. Preferred diameter pitch combinations for general use are shown in bold type in the tables. Consumer interests are requested to consult manufacturers' catalogs for lists of current stock production miniature screws.