NS EN 493 Ed. 1 (1992)被替代
Fasteners - Surface Discontinuities - Nuts
出版：Norwegian Standards (Norges Standardiseringsforbund)
專家解讀視頻
Sets limits for several types of surface discontinuities on nuts of product grades A and B with thread diameters from 5 mm to 39 mm inclusive. Also includes detailed annexes.
UNE EN 493:1993 - Identical
SS EN 493 Ed. 1 (1992) - Identical
UNI EN 493:1993 - Identical
NF EN 493:1992 - Identical
NEN EN 493:1993 - Identical
ONORM EN 493:1993 - Identical
DIN EN 493 (1992-07) - Identical
BS EN 493:1992 - Identical
I.S. EN 493:1993 - Identical
