We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
RFQ CartGet a QuoteSign inSign up
BRIDGEPORT FITTINGS Locknut: Steel, 3 1/2 in Trade Size - Expansion Set Screw Conduit Couplings
BRIDGEPORT FITTINGSExpansion Set Screw Conduit Couplings

BRIDGEPORT FITTINGS Locknut: Steel, 3 1/2 in Trade Size

The BRIDGEPORT FITTINGS Locknut (MPN EC-350) is a steel expansion set screw conduit coupling with a 3 1/2 in trade size and 14 in overall length. It is zinc plated, cUL Listed, and designed for EMT conduit.

SKU 3G-OTH-622016

Brand
BRIDGEPORT FITTINGS
Item
Locknut: Steel, 3 1/2 in Trade Size
Category
Expansion Set Screw Conduit Couplings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

BRIDGEPORT FITTINGS
Manufacturer Part Number
EC-350
Overall Lg
14 in
Trade Size
3 1/2 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

BRIDGEPORT FITTINGS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BRIDGEPORT FITTINGS Locknut (MPN EC-350) is a steel expansion set screw conduit coupling with a 3 1/2 in trade size and 14 in overall length. It is zinc plated, cUL Listed, and designed for EMT conduit.

Frequently Asked Questions

What is a BRIDGEPORT FITTINGS locknut used for?

A BRIDGEPORT FITTINGS locknut (MPN EC-350) secures EMT conduit to boxes or enclosures. It provides a mechanical connection that prevents pullout, ensuring a safe and reliable electrical installation in industrial, commercial, and infrastructure applications.

What are the specifications of the BRIDGEPORT FITTINGS EC-350 locknut?

The BRIDGEPORT FITTINGS EC-350 locknut has a 3 1/2 in trade size, 14 in overall length, and is made of steel with a zinc-plated finish. It is cUL Listed for use with EMT conduit. 3G Electric supplies this genuine component worldwide.

Where to buy BRIDGEPORT FITTINGS EC-350 locknut worldwide?

3G Electric supplies the BRIDGEPORT FITTINGS EC-350 locknut to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive the correct genuine part for your EMT conduit installation.

How to install a BRIDGEPORT FITTINGS locknut on EMT conduit?

Slide the locknut over the EMT conduit end, thread the fitting into the box or enclosure, and tighten the set screws to secure the conduit. Use a wrench on the locknut to ensure a firm connection. Always follow NEC guidelines for proper installation.

Used in

Common applications for BRIDGEPORT FITTINGS
Industrial electrical grounding — Bridgeport Fittings grounding lug hubs (MCH-075) for RMC/IMC conduit connections in manufacturing plants.
Commercial conduit installation — Bridgeport Fittings self-aligning three-piece threaded couplings (1122-RT) for aligning RMC runs in tight spaces.
Substation grounding — Bridgeport Fittings split grounding bushings (SGBS-38840) for bonding large-diameter conduit to enclosures.
Process facility wiring — Bridgeport Fittings grounding locknuts (162-G) for securing IMC or threaded rigid conduit in corrosive environments.
Infrastructure projects — Bridgeport Fittings three-piece couplings (1130-RT) for 4-inch RMC connections in tunnels or utility vaults.

BRIDGEPORT FITTINGS Products

3G Electric supplies BRIDGEPORT FITTINGS expansion set screw conduit couplings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from BRIDGEPORT FITTINGS

View all BRIDGEPORT FITTINGS parts →
Locknut: Steel, 3 in Trade Size, 12 in Overall Lg (MPN EC-300). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: cUL Listed.
BRIDGEPORT FITTINGS
Locknut: Steel, 3 in Trade Size, 12 in Overall Lg (MPN EC-300). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: cUL Listed.
Locknut: Steel, 1 1/4 in Trade Size, 7 in Overall Lg (MPN EC-125). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: cUL Listed.
BRIDGEPORT FITTINGS
Locknut: Steel, 1 1/4 in Trade Size, 7 in Overall Lg (MPN EC-125). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: cUL Listed.
Locknut: Steel, 4 in Trade Size, 16 in Overall Lg (MPN EC-400). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: Rigid; attr27174: NEMA.
BRIDGEPORT FITTINGS
Locknut: Steel, 4 in Trade Size, 16 in Overall Lg (MPN EC-400). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: Rigid; attr27174: NEMA.
Locknut: Steel, 2 in Trade Size, 8 1/2 in Overall Lg (MPN EC-200). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: LEED.
BRIDGEPORT FITTINGS
Locknut: Steel, 2 in Trade Size, 8 1/2 in Overall Lg (MPN EC-200). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: LEED.
Locknut: Steel, 1 1/2 in Trade Size, 7 1/2 in Overall Lg (MPN EC-150). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: RoHS Complaint.
BRIDGEPORT FITTINGS
Locknut: Steel, 1 1/2 in Trade Size, 7 1/2 in Overall Lg (MPN EC-150). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: RoHS Complaint.
Grounding Fitting: Steel, 1 in Trade Size, 6 1/2 in Overall Lg (MPN EC-100). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: RoHS Complaint.
BRIDGEPORT FITTINGS
Grounding Fitting: Steel, 1 in Trade Size, 6 1/2 in Overall Lg (MPN EC-100). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: RoHS Complaint.
Locknut: Steel, 2 1/2 in Trade Size, 10 in Overall Lg (MPN EC-250). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: Rigid; attr27174: NEMA.
BRIDGEPORT FITTINGS
Locknut: Steel, 2 1/2 in Trade Size, 10 in Overall Lg (MPN EC-250). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: Rigid; attr27174: NEMA.
Grounding Fitting: Steel, 3/4 in Trade Size, 6 in Overall Lg (MPN EC-075). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: REACH Compliance.
BRIDGEPORT FITTINGS
Grounding Fitting: Steel, 3/4 in Trade Size, 6 in Overall Lg (MPN EC-075). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: REACH Compliance.