Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3516AS3547-31 found under Bolt Machine by Simula Safety Systems Inc. The National Stock Number assigned to this part is 5306015018305, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3516AS3547-31.