FC connector
Analysis

FC connector

Section Title: Analysis
Table Section Text: None

Connector type	Plug key width (mm)	Receptacle keyway width (mm)

FC/PC	≤ 2.14	≥ 2.15

FC/APC type N (wide key)	2.09–2.14	2.15–2.20

FC/APC type R (narrow key)	1.97–2.02	2.03–2.08

Either	2.13–2.15	2.16–2.18

Sentence(s)

The 2.14 mm FC/APC key format is called "wide key" or "type N".

final_sentence: The 2.14 mm FC/APC key format is called "wide key" or "type N".