Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS40-4ALL38-750 found under Leaf Butt Hinge by National Aerospace Standards. The National Stock Number assigned to this part is 5340002071826, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAS40-4ALL38-750.