Part Number 0-521-402 having (CAGE Code Z4973) and FSC 5315 Nails, Machine Keys, and Pins in stock with ready to ship. Get an instant quote for 0-521-402 Pin Second Stage Th by Helitech Div Of Sikorsky Aircraft Ltd. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.