Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74A410531-2011 found under Pin Lever Attach by Blair Industries Inc. The National Stock Number assigned to this part is 5315011377357, 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 74A410531-2011.