Spring Washers - Square Section - Metric - A4 Stainless Steel

Spring washers are locking washers that are used when there is a need to prevent a fastener from loosening as a result of vibration. They are also often called split lock or split ring washers.

A spring washer has a split in the washer section that when tightened each side of the split bites into the nut and the mounting surface. This “bite” prevents any anti-clockwise rotation from occurring under vibration.

The term “square section” refers to the end section of the split in the spring washer.

About A4 Stainless Steel Metric Thread

The most common thread type in production today. Usually specified as M then a number x another number. This signifies the thread diameter and the length of the fastener.

For example, M4 x 30 means that the major thread diameter (the external distance across the outside of the thread) is 4mm and the length is 30mm. Length is usually measured from the underside of the fastener head.

A4 Stainless is often referred to as 316 or 18/10 stainless. As in A2 above, the numbers 18/10 refer to the chromium and nickel content- 18% chromium and 10% nickel.

A4 stainless is often used in marine or chemical environments as it has greater corrosion resistance than A2.

The chemical composition of both A2 and A4 stainless steel are almost identical with the most notable differences being the higher nickel content and the addition of Molybdenum in A4. Molybdenum is a silvery white metal that is highly corrosion resistant, very ductile and has an extremely high melting point.

There can also be Titanium present in A4 stainless at the option of the manufacturer.

Typically, A4 grade stainless steel costs slightly more than A2 because of its enhanced chemical and production properties. The extra cost can be justified, however, because hardware made of A4 stainless steel is extra resistant to tarnish and corrosion, enabling it to last a very long time.

Read more details

View as Grid List

11 Items

Code Product Name Info Pack Size Price Qty
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA403 M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000
2000
£12.76 £15.31
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA403
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000
2000
£12.76 £15.31
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA404 M4 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 1000
1000
£11.96 £14.35
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA404
M4 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 1000
1000
£11.96 £14.35
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA405 M5 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 1000
1000
£12.34 £14.81
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA405
M5 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 1000
1000
£12.34 £14.81
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA406 M6 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 1000
1000
£13.28 £15.94
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA406
M6 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 1000
1000
£13.28 £15.94
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA408 M8 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 500
500
£15.50 £18.60
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA408
M8 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 500
500
£15.50 £18.60
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA410 M10 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 200
200
£12.10 £14.52
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA410
M10 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 200
200
£12.10 £14.52
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA412 M12 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 200
200
£12.38 £14.86
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA412
M12 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 200
200
£12.38 £14.86
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA416 M16 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£16.22 £19.46
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA416
M16 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£16.22 £19.46
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA420 M20 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£19.80 £23.76
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA420
M20 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£19.80 £23.76
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA424 M24 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£27.03 £32.44
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA424
M24 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£27.03 £32.44
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA430 M30 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£42.19 £50.63
M3 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 2000 SWSMA430
M30 - Spring Washer Square Section Type A DIN 7980 - A4 Stainless Steel - Pack of 100
100
£42.19 £50.63
View as Grid List

11 Items