DIN 6904 - 1990 Curved Spring Washers for Screw and Washer Assemblies

Unit: 毫米(mm)

For thread diameter ^④

M2.5 ^① ^②

M3 ^①

M3.5 ^①

d ^③	min=nominal size
	max
d_c	max=nominal size
	min
h	Nominal Size
	max
	min
H	max
	min
per 1000 units ≈ kg

2.25	2.7	3.2
2.35	2.8	3.32
7	8	8
6.78	7.78	7.78
0.5	0.5	0.5
0.55	0.55	0.55
0.45	0.45	0.45
1.05	1.05	1.15
0.9	0.9	1
0.13	0.17	0.16

①,For this size, no specifications have been made for the residual spring force in DIN 267 part 26.
②,For this size, no specifications have been made for permanent set in DIN 267 part 26
③,The tolerances specified apply to the washer in the flat-pressed condition.
④,As specified in DIN 267-26
⑤,Technical delivery conditions: Washers shall be made of spring steel (FSt) and comply with the technical delivery conditions specified in DIN 267-26

Guangdong STL Fastening System Co., Ltd.
Contact:	Mr. Xiong
Cellphone：	+86-13928467909
QQ：	273256652
email：	szjydwj@126.com
Material: S60C, SUS304, 316 (A2/A4) high quality steel imported from Japan. Surface treatment: nature, harden, black phosphating, dehydrogenation, zinc plated, dacromet, electroplating, etc.; Specification: complete

DIN 6904 - 1990 Curved Spring Washers for Screw and Washer Assemblies

GB /T 955 - 1987

DIN 137 (B) - 1994

DIN 137 (A) - 1987

DIN 137 (B) - 1987

Q 416

CNS 4406 - 1979

YJT 6002

QC /T 363 - 1999

IS 6735 - 1994 (R2004)

ASME B 18.21.3 - 2008 (R2013)

QJ 3247.1 - 2005

QJ 3247.2 - 2005