Patent ID: 8451577
Filing Date: 2013-05-28
Classification: B64D,F16B

Abstract:
1. A lightning-resistant fastener, comprising: a fastener member for fastening a second member to a first member composing an airframe of an aircraft, the fastener member has a shaft portion penetrating through said first member and said second member from a side of said first member to project to a side of said second member; a first cap which is attached to cover the shaft portion of said fastener member projected to the side of said second member, and is made of an insulating material; and a second cap which is attached to cover a head portion of said fastener member on the side of said first member, and is made of an insulating material, wherein in said head portion of said fastener member, an engaging portion with which said second cap is engaged is formed on the side away from said first member, and said second cap has an engaged portion formed in a center portion on an inner peripheral surface thereof, and said engaged portion is engaged with said engaging portion, said second cap is attached to the fastener member in a state in which said engaged portion is engaged with said engaging portion while a gap is provided between said fastener member and a portion of said second cap other than said engaged portion.