Economy Metal Washers

Salt Spray Test

Test Method: Corrosion test conducted according to ASTM B117 test method.

Test conditions: ① Salt spray test (5% NaCL 35) ② Salt solution volume: 1

Salt spray test	Misumi existing products	Economic type	Market distribution 1	Market distribution 2
Surface treatment	Electroless nickel plating	Trivalent chromate polishing	Trivalent chromate polishing	Trivalent chromate polishing
Plating layer thickness	4~5 μm	4~5 μm	4~5 μm	4~5 μm
Before test
Test 24H
Test results	No corrosion	No corrosion	Severe corrosion occurs	Severe corrosion, rust

* The experimental data is obtained through our own inspection measurements and is provided for reference only

* Market distribution products are similar products that we purchase at random from online and offline markets

The effect of washer material and connector contact area on washer deformation

* Contact dimensions of the washer sample for testing: 16*4*1/10*3*1/(unit: mm) Screw: M4/M3, Acting force 2N.m

* The above data is limited to the sample test results, so please use it for reference only.

Application range

Height adjustment	Recommended for economy	For stoppers	Recommended for economy	Spring washer	Recommended for economy	Fixed with oval hole screws	Misumi standard product recommendation

When the contact area between the washer and the connector is small, Misumi standard washer use is recommended