Appleton 4350S Emt Conduit Connector 3-1/2 in Set Screw

Product Description

The APPLETON 4350S is a set screw type EMT conduit connector designed to ground and secure electrical metallic tubing raceways to boxes and enclosures in dry locations. Part of the 4000S Series, it features a non-insulated throat and a zinc plated steel construction that provides concrete-tight performance when taped. The 3-1/2 inch trade size connector has a 4.25 inch diameter body and a 1 inch thread length, making it suited for larger conduit runs in commercial electrical installations. Licensed electricians and electrical contractors install this connector as part of branch circuit and feeder conduit systems.

The 4350S is intended for commercial electrical applications where EMT conduit must be connected to junction boxes, pull boxes, or enclosures. Its heavy steel wall construction and concrete-tight rating when taped make it appropriate for installations where conduit passes through or near concrete surfaces. The pre-set and pre-staked set screw design simplifies field installation and helps maintain consistent grounding continuity along the conduit system.

Key Features

• Set screw attachment method grounds and secures EMT raceway to boxes and enclosures
• Concrete-tight construction when taped for protection in demanding commercial environments
• Non-insulated throat type for standard EMT termination
• Pre-set and pre-staked set screw for consistent field installation
• Zinc plated steel construction for corrosion resistance in dry locations
• Meets NEMA FB-1 applicable standard with UL 514B, CUL, and CSA C22.2 approvals

Compatibility

Designed for use with 3-1/2 inch trade size EMT conduit in commercial dry location installations requiring grounding and mechanical connection to boxes and enclosures.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize all circuits and lock out the panel before beginning conduit work. Tighten the set screw using the appropriate hex key to ensure secure mechanical and electrical grounding contact. When concrete-tight performance is required, tape the connector as specified by project or code requirements.

Technical Specifications

• Trade Size: 3-1/2 inches
• Connector Type: Set Screw EMT
• Throat Type: Non-Insulated
• Body Diameter: 4.25 inches
• Thread Length: 1 inch
• Material: Zinc Plated Steel
• Constructional Feature: Concrete-Tight When Taped
• Applicable Standard: NEMA FB-1
• Approvals: UL 514B, CUL, CSA C22.2
• Application: Commercial
• Used On: EMT Conduit
• Package Weight: 2.2 pounds
• Country of Origin: CN

Standard Information

• Brand: APPLETON
• Manufacturer Part Number: 4350S