Not 2.05mm narrow key, not 2.4mm wide key. Key width of two samples is measured about 2.25mm by micrometer in our lab. This key width is designed for FC/PC connection, but you may also use it for FC/APC connection if the requirement is not so strict. Female to female.

PHOSPHOR BRONZE internal sleeve, but samples are verified good for SMF. It may not be as durable as Zr sleeve if you use it >1000 mating times. (Seikoh Giken USA Inc. told us: It's just generally accepted that PhB metal sleeves are less durable, less repeatable, more contaminating than ZR. Keep in mind that the insertion loss performance is nearly the same. The key issues involved around ROHS compliance and durability performance.)


Model: A0336547 is marked on actual adapter.

In searching google, we also found description for this model number: AF1P-P FC ADAPTER FF. (This info is not guarranteed). AF1P-P is the part number of Manufacturer: Seikoh-Giken. We believe is is supplier to Nortel.