LIST I | LIST II | ||
---|---|---|---|
A | B.S.W. Thread | I | Semicircle on opposite side |
B | Metric External Tread | II | Both crest and root are flat |
C | Square Thread | III | Rounded equally at root and crest |
D | Knuckle Thread | IV | Crest flat and root rounded |
LIST I | LIST II | ||
---|---|---|---|
A | External V-thread in the front view | I | |
B | Internal V-thread in the side view | II | |
C | External V-thread in the side view | III | |
D | Internal V-thread in the front view | IV |