Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 500157 found under Clip Adjuster Screw by Alliant Techsystems Operations Llc. The National Stock Number assigned to this part is 5340007369390, 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 500157.