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BRIDGEPORT FITTINGS Locknut: Steel, 3 in Trade Size - Expansion Set Screw Conduit Couplings
BRIDGEPORT FITTINGSExpansion Set Screw Conduit Couplings

BRIDGEPORT FITTINGS Locknut: Steel, 3 in Trade Size

The BRIDGEPORT FITTINGS Locknut (MPN EC-300) is a steel expansion set screw conduit coupling in a 3 in trade size with a 12 in overall length. Designed for EMT, it features a zinc-plated finish and is cUL Listed.

SKU 3G-OTH-622015

Brand
BRIDGEPORT FITTINGS
Item
Locknut: Steel, 3 in Trade Size
Category
Expansion Set Screw Conduit Couplings
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Technical Specifications

BRIDGEPORT FITTINGS
Manufacturer Part Number
EC-300
Overall Lg
12 in
Trade Size
3 in
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BRIDGEPORT FITTINGS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BRIDGEPORT FITTINGS Locknut (MPN EC-300) is a steel expansion set screw conduit coupling in a 3 in trade size with a 12 in overall length. Designed for EMT, it features a zinc-plated finish and is cUL Listed.

Frequently Asked Questions

What is a BRIDGEPORT FITTINGS Locknut EC-300 used for?

The BRIDGEPORT FITTINGS Locknut EC-300 is a steel expansion set screw conduit coupling used to join and secure EMT conduit in electrical raceway systems. Its 3 in trade size and 12 in overall length accommodate large-diameter conduit runs in industrial, commercial, and infrastructure applications.

What are the specifications of the BRIDGEPORT FITTINGS Locknut EC-300?

The EC-300 is a steel locknut with a zinc-plated finish, 3 in trade size, and 12 in overall length. It is designed for EMT conduit, is cUL Listed, and does not include a grounding feature. The manufacturer part number is EC-300.

Where to buy BRIDGEPORT FITTINGS Locknut EC-300 worldwide?

3G Electric supplies the BRIDGEPORT FITTINGS Locknut EC-300 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this steel expansion set screw conduit coupling.

How to install a BRIDGEPORT FITTINGS Locknut EC-300?

To install the EC-300 locknut, thread it onto the EMT conduit end, then tighten with a conduit wrench until secure. Ensure the set screw is engaged to prevent movement. Follow standard electrical installation practices and local codes for conduit couplings.

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.

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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.
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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.
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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.
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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, 3 1/2 in Trade Size, 14 in Overall Lg (MPN EC-350). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: cUL Listed.
BRIDGEPORT FITTINGS
Locknut: Steel, 3 1/2 in Trade Size, 14 in Overall Lg (MPN EC-350). Key specifications — attr27176: Zinc Plated; attr27173: No; attr27171: Steel; attr27177: EMT; attr27174: cUL Listed.
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.
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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.
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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.
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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.
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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.