4" EMT Compression Type Connector
SKU: #178754
Part: #660S
UPC: 751338168442
4" EMT Compression Type Connector
SKU: #178754
Part: #660S
UPC: 751338168442
Total Price: $15.14 per each Sold in increments of 1 each
Product Highlights
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Concrete-tight compression fit suitable for wet or embedded conduit installations when taped
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Zinc-plated steel construction with a steel locknut assembled in the box - no separate hardware needed
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Part number 660S is the 4" top-of-range size in a full series spanning 1/2" to 4"
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Triple-certified to UL 514B, NEMA FB1-2014, and Federal Specification W-F-406E/W-F-406D
Description
4" EMT Compression Type Connector – EMT Fittings
The 4" EMT Compression Type Connector by Southwire is designed for secure and concrete-tight joining of thin wall EMT conduit to boxes or enclosures. This steel-constructed connector features a compression type design with a threaded x compression connection, making it suitable for electrical distributors and lighting solutions requiring reliable wire and cable installations. It is zinc plated for mechanical protection and complies with UL, NEMA, and ANSI standards.
Specifications
- Material: Steel
- Finish: Zinc Plated
- Connection: Threaded x Compression
- Insulation: Bare
- Size: 4"
- Product Weight: 16.1 lbs
- Manufacturer: Southwire
- Manufacturer Part #: 660S
Features
- Compression type connector for concrete-tight fit
- Includes zinc plated steel locknut
- Fabricated from strong, resilient steel
- UL listed and NEMA/ANSI FB-1 compliant
- Available in sizes from 1/2" to 4"
- Suitable for joining EMT conduit to boxes or enclosures
Downloads & Links
Frequently Asked Questions
connector?
A = 4.75", B = 5.375", C = 0.938" - verified dimensions for the 4" (660S) size.
What certifications does this fitting carry?
It is UL listed to UL 514B, compliant with NEMA FB1-2014, and meets Federal Specifications W-F-406E and W-F-406D - the standard trio for commercial and industrial EMT fittings.
Is this connector suitable for concrete or wet-location conduit runs?
Yes - the compression-type design achieves a concrete-tight fit. For wet or embedded installations, the fitting should be taped per standard electrical practice.
Does this connector have an insulated throat?
No - this is the bare (non-insulated) version. An insulated-throat variant (660Si) is available separately if your installation requires it.
Does this connector come with a locknut?
Yes, a zinc-plated steel locknut is assembled with the connector - no separate hardware is required.
Is this a special-order item or regularly stocked?
This is a special-order item at ULE Group - plan for additional lead time when ordering.
