Arlington SG50AST Saddle Knockout Connector 1/2 Inch

Product Description

The ARLINGTON SG50AST is a zinc die-cast saddle-type connector designed for securing aluminum and steel cable through a 1/2 inch knockout. It snaps into the knockout using an external spring steel clip, eliminating the need for a locknut on the exterior. A spring set screw holds the cable firmly in place. The insulated throat protects cable insulation at the entry point. When taped, the fitting achieves a concrete-tight seal. This connector is installed by licensed electricians during rough-in or retrofit work on conduit bodies, junction boxes, and enclosures.

The SG50AST is suited for residential and light commercial electrical installations where armor-clad or metal-clad cable must terminate at a 1/2 inch knockout entry. The saddle design speeds installation in tight spaces where a traditional two-piece connector would be difficult to handle. The spring steel clip secures the connector from the outside of the enclosure without requiring interior access during seating. It accommodates a cable range of 0.710 to 0.910 inches in diameter, with an end stop diameter of 0.620 inches to prevent cable pullback.

Key Features

• Zinc die-cast body for durability and grounding continuity
• Snaps into 1/2 inch knockout via external spring steel clip — no locknut required
• Spring set screw secures aluminum and steel cable without separate tools beyond a screwdriver
• Insulated throat protects cable jacket and insulation at connector entry
• Concrete tight when taped, suitable for installations requiring environmental sealing
• Supports cable diameter range of 0.710 to 0.910 inches with a 0.620 inch end stop

Compatibility

Designed as an OEM-style replacement and new-installation connector for standard 1/2 inch knockouts on electrical enclosures, junction boxes, and conduit bodies accepting aluminum or steel armored cable.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC requirements for cable terminations. De-energize the circuit and verify absence of voltage before opening any enclosure. Insert the connector into the 1/2 inch knockout until the spring steel clip seats fully against the enclosure wall. Tape the fitting at the knockout seal point if a concrete-tight installation is required.

Technical Specifications

• Knockout Size: 1/2 inch
• Cable Diameter Range: 0.710 to 0.910 inches
• End Stop Diameter: 0.620 inches
• Material: Zinc die-cast
• Connector Type: Saddle-type with external spring steel clip
• Compatible Cable: Aluminum and steel armored cable
• Sealing Rating: Concrete tight when taped
• UPC: 018997175014

Standard Information

• Brand: ARLINGTON
• Manufacturer Part Number: SG50AST