GB/T 810-1988

Small round nuts(d≤M100)

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

Q 391-1999

Round nuts

Q 391-2012

Round nuts

CNS 4465-1978

Slotted Round Nut

CNS 4729-1984

Round nuts

PN 82471

Slotted round nuts for hook spanner,ISO metric fine thread

GB/T 9160.2-1-2006

4 Slots lock nuts for use with rolling bearings(d≤200mm)-Table 1

GB/T 9160.2-1-2006

4 Slots lock nuts for use with rolling bearings(d≥210mm)-Table 1

GB/T 9160.2-2-2006

4 Slots lock nuts for use with rolling bearings-Table 2

GB/T 9160.2-2-2017

4 Slots lock nuts for use with rolling bearings(d≤200mm)-Table 2

GB/T 9160.2-2-2017

4 Slots lock nuts for use with rolling bearings(d≥210mm)-Table 2

GB/T 9160.2-3-2017

4 Slots lock nuts for use with rolling bearings-Table 3