Threaded Protective Cap with Retention Chain for D38999-Style Interfaces

This draft page covers a threaded protective cap used to protect an unmated circular-connector interface during equipment storage, handling or service. Correct selection depends on whether the cap is for the plug or receptacle side, the exact shell/interface size, coupling thread, sealing requirement, chain length and attachment method. Tradin Connect reviews the connector designation or drawing before matching the cap. The cap may be quoted together with the connector, backshell, contacts and other harness accessories so the protective item is not omitted from the project BOM.

No sealing, environmental or qualification level is implied by appearance. Confirm the exact connector interface, materials, finish, gasket, chain and applicable test requirements before ordering.