The Boeing Company
ANCHORING WASHER FOR AN EME PROTECTION CAP SYSTEM

Abstract:

A cap system for enclosing a metallic fastener assembly extending through a structure, which includes a first securement mechanism positioned about a periphery of a washer of the metallic fastener assembly wherein the first securement mechanism includes a first tab member extending in a direction transverse to a plane of a surface of the washer and a second tab member extending in a direction transverse to the plane of the surface of the washer spaced apart from the first tab member about the periphery of the washer. Cap system further includes a cap member which includes a sidewall having an inner surface which defines a cavity dimensioned to receive the washer and defines a second securement mechanism complementary configured to engage the first securement mechanism; and an end of the sidewall of the cap member defines an opening which provides the washer to have access into the cavity.