Q 144-1999
Hexagon head bolt and external teeth serrated lock washer assemblies
JIS B1187-1-1995
Hexagon head bolt and external teeth serrated lock washer assemblies-Table 1
JIS B1187-1-2006
Hexagon head bolt and external teeth serrated lock washer assemblies-Table 1
Q 144-2012
Hexagon head bolt and external teeth serrated lock washer assemblies
GB/T 9074.16-1988
Hexagon head bolt and external teeth serrated lock washer assemblies