The 239-0373-500 is a translucent yellow lens cap designed for the Dialight 362 Series indicator base, featuring integrated RFI/EMI mesh shielding to suppress electromagnetic interference. This component is part of a modular indicator assembly system where the base, bulb, and cap must be purchased separately to form a complete indicator. The lens cap is engineered for military-grade applications including aircraft avionics, radar systems, missile systems, and satellite communication equipment, meeting or exceeding the environmental and operational requirements of MIL-L-6723 and MIL-L-3661C standards. The assembly utilizes a 15/32" clearance hole mounting with anti-rotation (locked) construction to ensure secure installation and prevent rotation of the mounting bushing. With RoHS compliance and military cross-reference LH73/2, this component is ideal for demanding aerospace, defense, and communication systems requiring reliable signal indication with electromagnetic protection.