L17D4K63009 is a flat male dust cover with chain designed for use with female connectors in shell size E configuration with 9 contacts. The product features a steel shell with tin plating over nickel, brass rivets with tin plating, and a brass chain with nickel plating for corrosion resistance and durability. The dust cover has a dimension of 0.41 inches after crimping and is manufactured by Amphenol to RoHS compliance standards (EU 2002/95/EC). This accessory is commonly used in connector applications to protect female connector ports from dust and contamination during storage and transport, ensuring reliable connections when mated.