Lock washer, spring washer, and single coil spring washers
Material: 55si2Mn, 60si2Mn, spring steel bars
wL20, WL24, Wl22
Rockwell hardness 42-50
Spring washer is usually supplied in natural black finish unless otherwise specified. At the request of customer we offer:phosphate coated, electro-galvanized, cadmium plated, zinc plated
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