|
UL 1598 5.10.2 Self-threading screws, including sheet-metal screws, used to secure electrical or enclosure/ O2 L% C% \; o& r5 }( y8 P+ a/ T
component parts in place or together, shall comply with the self-threading screw torque test in Clause: {! {6 s Q3 J5 a4 N
16.14, when the screw threads into nonferrous metal or polymeric material.
% S, o7 q# m! \0 A' `( q
. i. q/ Z; @( E+ v+ o, g& G这里讲了when the screw threads into nonferrous metal or polymeric material.,要做self-threading screw torque test
+ \; m8 R) J# s! f- U1 z2 [' Z如果旋入的是其他材料 比如陶瓷呢?
: p5 d$ C7 F6 J: S: d |
|