GB/T 6178-1986

Hexagon slotted and castle nuts,style 1

GB/T 6181-1986

Hexagon thin slotted nuts

GB/T 6179-1986

Hexagon slotted nuts,style 1

GB/T 6180-1986

Hexagon slotted and castle nuts,style 2

GB/T 6180-1986

Crown nut with slot,style 2

GB/T 9458-1988

Hexagon slotted and castle nuts,style 2,Fine pitch thread

GB/T 9459-1988

Hexagon slotted nuts with fine pitch-thread

DIN 935-1-1987

Hexagon slotted and castle nuts(big on edge)

DIN 935-1-1987

Hexagon slotted and castle nuts

DIN 935-3-1987

Hexagon slotted nuts with metric coarse pitch thread (big on edge)

DIN 935-3-1987

Hexagon slotted nuts with metric coarse pitch thread

DIN 937-1983

Hexagon thin castle nuts

DIN 979-1987

Hexagon thin slotted and castle nuts(big on edge)

DIN 979-1987

Hexagon thin slotted and castle nuts

BS 3692-2001

Hexagon slotted and castle nuts

JB/ZQ 4331-2006

Hexagon slotted nuts

QJ 2396-1992

Hexagon slotted nuts

JIS B1170-1-2001

Type 1 fine hexagon slotted nuts-Table 1

JIS B1170-1-2001

Type 1 medium hexagon slotted nuts-Table 1

JIS B1170-1-2001

Type 1 fine hexagon slotted thin nuts-Table 1