Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK 11421 1 found under Eyelet Turnlock Fastener by Breezeeastern Corporation. The National Stock Number assigned to this part is 5325015647628, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK 11421 1.