Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DIN931-M12X90-88DBL845121 found under Screw Cap Hexagon H by Navantia Sa. The National Stock Number assigned to this part is 5305121564902, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DIN931-M12X90-88DBL845121.