GB/T 817-1988
Slotted round nuts—Type A
GB/T 812-1988
Round nuts(d≤M100)
GB/T 812-1988
Round nuts(d≥M105)
GB/T 809-1988
Insert round nuts —Type A
GB/T 809-1988
Insert round nuts —Type B
GB/T 810-1988
Small round nuts(d≤M100)
DIN 546-1986
Slotted round nuts
DIN 981-1983
Locknuts for use with rolling bearings—Type 1
DIN 981-1983
Big lock nuts for use with rolling bearings-Type 1
DIN 1804-1971
Slotted round nuts for hook spanner,ISO metric fine thread
JB/T 1700.2-1991
Lock nut
QJ 2392-1992
Slotted round nuts
Q 391-1999
Round nuts
JIS B1119-3-1986
Slotted round nuts-Table 3
JIS B1119-3-1995
Slotted round nuts-Table 3
DIN 546-2007
Slotted round nuts
DIN 546-2010
Slotted round nuts
DIN 547-2006
Round nuts with drilled holes in one face，through holes
DIN 547-1986
Round nuts with drilled holes in one face，through holes
Q 391-2012
Round nuts
