The 2-1813099-1 is a coupling ring assembly for 2.5mm socket connectors with integrated secondary locking capability. This component is manufactured from PAR-GF35 black material and features a pre-locked coupling ring design that fits connectors compliant with DIN 72585/ISO 15170 Form A and B standards, specifically compatible with pin-housing 2-4POS TYCO-PN 967402. The coupling ring incorporates a secondary locking device with a sliding distance of 1.5 mm and is designed to accommodate a maximum wire thickness of 2.5 mm². Key dimensional specifications include an outer diameter of 32.9 mm, a height of 19 ± 0.3 mm, and internal dimensions of 7 ± 0.15 mm. This component is commonly used in automotive electrical connectors and industrial applications requiring secure, reliable connections with secondary locking features to prevent accidental disconnection.