Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1158-21-2 found under Insert Self Locking by Rotron Incorporated. The National Stock Number assigned to this part is 5340013901191, 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 1158-21-2.