|
UL 1598 5.10.2 Self-threading screws, including sheet-metal screws, used to secure electrical or enclosure
. O9 h9 m2 s4 M" l" lcomponent parts in place or together, shall comply with the self-threading screw torque test in Clause
. G" |" ~: F6 c; `: }0 q b+ b7 N6 B16.14, when the screw threads into nonferrous metal or polymeric material.
2 A' ?9 [1 J9 w) K c$ ]+ [2 g* B
8 w3 l& I: i& p" ~3 N$ \+ P7 b( I这里讲了when the screw threads into nonferrous metal or polymeric material.,要做self-threading screw torque test
/ M- {0 w' u/ v8 ?如果旋入的是其他材料 比如陶瓷呢?0 {# V# ]0 y6 h
|
|