Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20518HSS1.784-12MOD(B M3X10 found under Standoff Threaded S by Accurate Screw Machine Co. The National Stock Number assigned to this part is 5340015542552, 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 20518HSS1.784-12MOD(B M3X10.