Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CAT19.019 ITEM 44 found under Pin Spring by Carrier Corporation. The National Stock Number assigned to this part is 5315014236661, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CAT19.019 ITEM 44.