8АТ-0101-21 Tail Boom and Tail Boom Pylon Attachment Bolt

8АТ-0101-21 Tail Boom and Tail Boom Pylon Attachment Bolt

8AT-0101-21 is a structural attachment bolt used for securing the tail boom to the fuselage and tail boom pylon structure on Mi-8, Mi-17 and Mi-171 helicopters. This fastener forms part of the primary airframe joint that transfers structural loads between the tail boom assembly and main fuselage structure. Designed for aviation-grade strength, fatigue resistance and corrosion protection, the bolt ensures reliable alignment and retention of the tail boom attachment interface.