Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 241-5750405 PIECE 127 found under Nut Self Locking Extended Washer Double Hexagon by Cincinnati Gear Co The. The National Stock Number assigned to this part is 5310011972472, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 241-5750405 PIECE 127.