• Global Certificate: ISO 9001-2008

Spring Washers

Spring washers are disks of metal that form of irregular shape, so that when the washer is loaded it acts like a spring and deflects providing a preload between the two surfaces. There are many different spring washer.

Bowed or curved
Conical washer
Wave washer
Bellywelly washer

Washer Dimensions

Dimensions of spring washers are critical to its successful implementation since they are valued for their small size like all springs their dimensions also change depending upon the deflection.

Outer Diameter (OD)

Outer Diameter is the straight – line width across the washer to its furthest edges.


Inner Diameter (ID)

Inner Diameter is the width across the board hole of the washer.


Image

AS PER ISS-6735/1972[DIN;7980] SQUARE SECTION

NOMINAL WIDTH THICKNESS NOMINAL WIDTH THICKNESS
SIZE(mm) (mm) (mm) SIZE(mm) (mm) (mm)
3 1.0 1.0 8 2.0 2.0
3.5 1.2 1.2 10 2.5 2.5
4 1.2 1.2 12 2.5 2.5
5 1.6 1.6 14 3 3
6 1.6 1.6 16 3.5 3.5
6 2 2 18 3.5 3.5
20 4.5 4.5

AS PER ISS-3063/1972 FLAT SECTION

3 1.3 0.8 10 3.5 22
3.5 1.3 0.6 12 4.0 25
4 1.5 0.9 14 4.5 30
5 1.8 1.2 16 5.0 35
6 2.5 1.6 18 5.0 35
7 2.5 1.6 20 60 40
8 3.0 2.0 24

AS PER BSS-1802/1951 SPECIFICATION FLAT SECTION

3.18-1.2*0.8
[1/8”-19*21G] 		11-4.1*16
[7/16”-8*16G]
3.97-1.6*0.8
[5/32”-16*21G] 		12.70-4.1*23
[1.2”8*13G]
4.76-2.3*1.2
[3/16”-13*10G] 		14.29-4.9*23
[9/16”-6*13G]
3.35-2.3*1.6
[1/4”-13*16G] 		5.88-4.9*33
[5/8”-6*10G]
7.94-3.3*1.6
[5.16”-10*16G] 		9. 05-5.9*33
[3/4”-6*10G]
8.53-3.7*18
[3/8”-9*16G]