Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1697 found under Pin Shoulder Headle by Del Mfg Co. The National Stock Number assigned to this part is 5315006790434, 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 1697.