DIN 6903 (A) - 1990 Plain washers for tapping screw and washer assemblies—type A

Unit: 毫米(mm)

For Nominal Thread Diameter

ST2.9

ST3.5

ST3.9

d	min=nominal size
	max
d_c	max=nominal size
	min
h	Nominal Size
	max
	min
per 1000 units ≈ kg

2.5	3	3.3
2.6	3.1	3.42
7	8	9
6.78	7.78	8.78
1	1	1
1.06	1.06	1.06
0.94	0.94	0.94
0.26	0.34	0.43

①,Material: Steel St2 K60 as specified in DIN 1624; Minimum hardness 180 HV10 note: The specifications for mechanical properties of washers relate to their as delivered condition and may change as the assembly is subjected to heat treatment. The C content of the steel shall not exceed 0.1%

GB /T 97.4 (S) - 2002

Plain Washers（Small） For Combination Screw

GB /T 97.4 (N) - 2002

Plain Washers（Normal） For Combination Screw

GB /T 97.5 (N) - 2002

Plain Washers For Tapping Screw And Washer Assemblies - Type N

GB /T 97.5 (L) - 2002

Plain Washers For Tapping Screw And Washer Assemblies - Type L

GB 9074.24 - 1988

Plain Washers For Assembly

GB 9074.25 - 1988

Blg Plain Washer For Assembly

GB 9074.29 - 1988

Samll Washer For Tapping Screw Assembly

GB 9074.30 - 1988

Blg Washer For Tapping Screws Assembly

DIN 6902 (B) - 1990

Plain washers for screw and washer assemblies—Type B

DIN 6902 (A) - 1990

Plain washers for screw and washer assemblies—Type A

DIN 6902 (C) - 1990

Plain washers for screw and washer assemblies—Type C

DIN 6903 (B) - 1990

Plain washers for tapping screw and washer assemblies—type B

ISO 10673 (L) - 2009

Plain Washers For Screw And Washer Assemblies - Large Series - Product Grade A

ISO 10673 (N) - 2009

Plain Washers For Screw And Washer Assemblies - Normal Series - Product Grade A

ISO 10673 (S) - 2009

Plain Washers For Screw And Washer Assemblies - Small Series - Product Grade A

ISO 10669 (N) - 1999

Plain Washers For Tapping Screw And Washer Assemblies - Normal Series - Product Grade A

ISO 10669 (L) - 1999

Plain Washers For Tapping Screw And Washer Assemblies - Large Series - Product Grade A

ISO 10673 (N) - 1998

Plain washers for screw and washer assemblies-Normal series-Product grade A

JIS B 1258 (S) - 2012

Plain Washers For Screw And Washer Assemblies - Type S

JIS B 1258 (N) - 2012

Plain Washers For Screw And Washer Assemblies - Type N

JIS B 1258 (L) - 2012

Plain Washers For Screw And Washer Assemblies - Type L

JIS B 1258 - 2006

Large plain washers for screws assmebly

JIS B 1258 - 2006

Plain washers for screws assembly

JIS B 1258 - 2006

Small plain washers for screws

Q 407

Plain washers for assembly

Q 407B (L)

Plain Washers（Large）for Combination Screw

Q 407B (N)

Plain Washers（Normal） For Combination Screw

Q 421

Plain washer for tapping screw assembly

Q 421B (N)

Plain Washers For Tapping Screw And Washer Assemblies - Type N

Q 422

Large plain washers for self-tapping screws

Q 422B (L)

Plain Washers For Tapping Screw And Washer Assemblies - Type L

NF E 25-522 - 1999

Plain Washers For Tapping Screw And Washer Assemblies - Large Series - Product Grade A

DIN EN ISO 10673 (S) - 2009

Plain Washers For Screw And Washer Assemblies—Type S, Product Grade A

DIN EN ISO 10673 (N) - 2009

Plain Washers For Screw And Washer Assemblies—Type N, Product Grade A

DIN EN ISO 10673 (L) - 2009

Plain Washers For Screw And Washer Assemblies—Type L, Product Grade A

DIN EN ISO 10669 (N) - 1999

Plain Washers For Tapping Screw And Washer Assemblies—Normal Series

DIN EN ISO 10669 (L) - 1999

Plain Washers For Tapping Screw And Washer Assemblies—Large Series

GB	GB /T 97.5(N)
ISO	ISO 10669(N)
DIN	DIN EN ISO 10669(N)
Some of the above standards may be approximate equivalent. If there is any objection, the standard original shall prevail.