where can I get these discontinued parts?

A32 30442 Ring Retaining Obsolete - Not Available
Discontinued
$0.00
N/A
A33 37838
Washer, .629 X 7/8 X 1/64 Obsolete - Not Available
Discontinued
$0.00
N/A
A34 60178
Washer, Spring Obsolete - Not Available