Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 221158-1 found under Wheel Solid Nonmetallic by Hunter Engineering Company Inc. The National Stock Number assigned to this part is 5340013293082, 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 221158-1.