标准:
标准库
(6)
IS 2016-1967Plain washer
IS 3063-1972Spring lock washers with square ends
IS 5371-1982Toothed lock washers with internal teeth—Type J
IS 5371-1982Toothed lock washers with external teeth—Type A
IS 5556-1970Toothed lock washers with internal teeth—Type J
IS 5556-1970Toothed lock washers with external teeth—Type A