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UL 1598 5.10.2 Self-threading screws, including sheet-metal screws, used to secure electrical or enclosure
2 S/ q3 ^* b, D/ H, k" g# @/ ycomponent parts in place or together, shall comply with the self-threading screw torque test in Clause# L* v" s! g* M$ P+ L
16.14, when the screw threads into nonferrous metal or polymeric material." j, {) d1 b3 G3 q2 N+ {
6 d0 s7 w, d# g' o* Q这里讲了when the screw threads into nonferrous metal or polymeric material.,要做self-threading screw torque test
% ^! f. Y8 J, n: C5 Y+ w1 S如果旋入的是其他材料 比如陶瓷呢?
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