Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54042 - 496 3 16X3 16X18 01 found under Key Machine by Ls Starrett Company The. The National Stock Number assigned to this part is 5315011087747, 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 54042 - 496 3 16X3 16X18 01.