Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HS5583-6 found under Collar Pin Rivet by Mcdonnell Douglas Helicopter. The National Stock Number assigned to this part is 5320007772990, and the Federal Supply Class is 5320 Rivets. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HS5583-6.