Type C - male
Type D - female with d4 = d3
DIN 6319 Spherical Washers, Stainless Steel, Male or Female
These spherical washers are used for clamping on non-parallel surfaces or between parts with uneven or irregular faces. The two parts of the washer come together to provide a flat surface.
When utilising hexagon nuts with spherical seating DIN 6330 the male washer is redundant.
Being made of stainless steel, these spherical washers are ideal for use in clean room environments, such as found in the food, medical and pharmaceutical industries and their associated processing and packaging.
Stainless Steel NI AISI 303, not hardened
Stainless Steel A4 AISI 316 not hardened
Also available in steel DIN6319.