Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 70-05-557 found under Bolt Machine by Supacat Pty Ltd. The National Stock Number assigned to this part is 5306012401783, 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 70-05-557.