Part Number 105-21721.115-001 Stiffener W O Rivet Ho in stock with ready to ship. Get an instant quote for Eurocopter American part number 105-21721.115-001 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for 105-21721.115-001. Our dedicated account manager will get back to you within 15 minutes.