標準號：ANSI/ASME B18.21.1-2009
中文標準名稱：螺旋彈簧鎖緊墊圈,齒鎖緊墊圈和平墊圈(英制系列)
英文標準名稱：Washers-Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch Series)
標準類型：J13
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：J13
國際標準分類號：21.060.30
適用范圍：This standard covers the dimensional requirements, physical properties, and related test methods for helical spring-lock washers (0 through 3 inches), tooth-lock washers (2 through 1 1/4 inches), and plain washers (0 through 3 inches). The inclusion of dimensional data in this Standard is not intended to imply that all products described are stock production items. Consumers should consult with suppliers concerning the availability of products. NOTE: The word lock appearing in the names of products in this Standard is a generic term historically associated with their identification and is not intended to imply an indefinite permanency of fixity in attachments where the fasteners are used.