50PCS FC APC Small D Fiber Optic Adapter, FC Circular Fiber Coupler Flange, FC APC Fiber Connector Adapter for Optical Communication Equipment, FTTH Network Wiring and Optical Test Projects

This bulk set contains 50 pieces of FC APC Small D fiber optic adapters, also called fiber couplers or fiber flanges. It functions to connect two FC APC fiber patch cords together to realize continuous optical signal transmission in optical network systems.

Equipped with standard FC circular threaded structure, the connector can be screwed tightly after plugging in. It avoids accidental separation caused by shaking, impact and long-term equipment vibration, greatly improving connection stability. Inside the adapter adopts high-precision ceramic alignment sleeve, which precisely aligns fiber cores, effectively controlling insertion loss and return loss to guarantee excellent transmission performance.

Adopting Small D compact housing design, the adapter takes up minimal installation space, which is ideal for dense wiring inside fiber distribution boxes, optical transceivers and test instruments. The outer casing is made of sturdy engineered plastic with corrosion resistance and anti-aging features, supporting long-term continuous use in indoor communication environments.

Widely used in FTTH access networks, data center fiber interconnection, optical communication testing equipment, security monitoring optical wiring and telecommunication engineering construction. Suitable for network engineers, communication maintenance teams and system integrators.

Important Note: This adapter supports FC APC fiber connectors only. Mismatch between APC and UPC end faces will cause heavy optical signal attenuation. Please confirm your fiber cable type before ordering.