Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D48-12-21-1 found under Pin Straight Thread by Dante Valve Company Inc. The National Stock Number assigned to this part is 5315014964235, 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 D48-12-21-1.