3/8 MC-BX CON W/SQUARE

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Product Description
1/2" knockout cable connector
3/8" trade size
Die-cast zinc construction
Rectangular end stop (.400" × .580" approx.)
Secures with locknut to box or enclosure
2-screw clamp design
Cable range: approx. 0.225"–0.612"
Compatible with Flex, AC, MC, NM, MCI, SC, and SE cable
Common Uses
Terminating armored/metal-clad/flexible cable into boxes or panels
General branch-circuit cable entry in residential/commercial installs
Multi-purpose connector when working with mixed cable types

The 840 is the base 1/2" knockout rectangular-end version in Arlington’s 840-series cable connector family, typically used where a broader cable compatibility range is needed in a compact connector