https://nsiindustries.com/product/heavy-duty-romex-connector-3-8-zinc-for-sjo-cord-or-nm-b-cable/
Use the Bridgeport 3/8″ Die Cast Zinc Heavy Duty Romex Connector with die-cast strap for SJO cord or NM-B cable to a box or enclosure.
https://nsiindustries.com/product/strap-type-connector-3-8-die-cast-zinc-for-nonmetallic-cable/
Use the Bridgeport 650-DC2 3/8″ Die Cast Zinc Strap-Type Connector with oval cable and two screws to connect one or two nonmetallic cables to a box or enclosure. The solidly built connector meets OSHA-recognized NRTL-listed electrical standards.
https://nsiindustries.com/product/plastic-multi-nonmetallic-transition-connector-3-4/
The Bridgeport 630-NM2 3/4-Inch Plastic Mighty-Merge Multi-NM Transition Connector installs multiple Nonmetallic Cables into a single 3/4-inch KO.
https://nsiindustries.com/product/snap-in-connector-3-4-pvc-for-portable-cord-to-box/
The Bridgeport 621-NM 3/4″ PVC Snap-In Connector connects a nonmetallic portable cord to box applications without a locknut. It’s easy to install, cost-effective and resists corrosion, moisture, weathering, chemical rotting, shock and abrasion.
https://nsiindustries.com/product/snap-in-connector-1-2-pvc-for-portable-cord-to-box/
The Bridgeport 620-NM 1/2″ PVC Snap-In Connector connects a nonmetallic portable cord to one 14/2 to 10/3 cable or two 14/2 to 12/2 cables to box applications without a locknut. Made in the USA, the connector is 1-3/8 inches long.
https://nsiindustries.com/product/barrel-type-dual-connector-3-4-pvc-for-nm-b-cables/
The Bridgeport 617-NMD 3/4″ PVC Barrel-Type Dual Connector connects one nonmetallic 8/2, 8/3, 6/2 or 6/3 NM-B cable to a box or enclosure without a locknut.
https://nsiindustries.com/product/barrel-type-dual-connector-1-2-pvc-for-nm-b-cables/
The Bridgeport 1/2″ PVC Barrel-Type Dual Connector connects one nonmetallic 14/2 to 6/2 cable or two 14/2 to 12/3 NM-B cables inside or outside a box or enclosure without a locknut.