本标准涵盖链轮链条互换性所需的尺寸限制。它不提供不同制造商的链条或单个链环的互连性。空心销链，双节距是一系列交替组装的滚子链节和销链节，其中空心销在衬套内铰接。链板的节距是基本系列链条链板节距的两倍。销连杆板和滚子连杆板具有相同的直边轮廓。链条可能有大型滚柱，以便在滚柱承载输送的负载时使用。空心销链，单节距是一系列交替组装的滚子链和销链，其中空心销在衬套内铰接。 主要主题是（a）空心销链；和（b）链轮。有一个关于一般链条尺寸、互换性极限尺寸、测量载荷和极限抗拉强度的表格。

This Standard covers the dimensional limits required for chain interchangeability on sprockets. It does not provide for interconnectability of chains or individual links from different manufacturers. Hollow-pin chain, double pitch is a series of alternately assembled roller links and pin links in which the hollow pins articulate inside the bushings. The pitch of the link plates is twice that of the link plates of the base series chain. Pin link plates and roller link plates have identical straight-edge contours. Chains may have large rollers that are intended for use when the conveyed load is carried by the rollers. Hollow-pin chain, single-pitch is a series of alternately assembled roller links and pin links in which the hollow pins articulate inside the bushings. The main topics are (a) Hollow pin chains; and (b) Sprockets. There is a Table on General chain dimensions, Limiting dimensions for interchangeability, Measuring loads and Ultimate tensile strengths.