---
product_id: 17836261
title: "SIGMA ENGINEERED SOLUTIONS ProConnex TC-511 EMT Set Screw Coupling 1/2\" 50-Pack"
brand: "sigma engineered solutions"
price: "€ 67.47"
currency: EUR
in_stock: true
reviews_count: 8
category: "Sigma Engineered Solutions"
url: https://www.desertcart.gr/products/17836261-sigma-engineered-solutions-proconnex-tc-511-emt-set-screw-coupling
store_origin: GR
region: Greece
---

# Set screw coupling for secure fit Durable zinc die-cast construction UL & CSA listed for trusted safety SIGMA ENGINEERED SOLUTIONS ProConnex TC-511 EMT Set Screw Coupling 1/2" 50-Pack

**Brand:** sigma engineered solutions
**Price:** € 67.47
**Availability:** ✅ In Stock

## Summary

> 🔧 Connect with confidence, build with pride.

## Quick Answers

- **What is this?** SIGMA ENGINEERED SOLUTIONS ProConnex TC-511 EMT Set Screw Coupling 1/2" 50-Pack by sigma engineered solutions
- **How much does it cost?** € 67.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/17836261-sigma-engineered-solutions-proconnex-tc-511-emt-set-screw-coupling)

## Best For

- sigma engineered solutions enthusiasts

## Why This Product

- Trusted sigma engineered solutions brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Premium zinc die-cast material resists corrosion and wear for long-term durability.
- • **Organized & Ready:** Comes in a handy 50-pack plastic canister with lid—keep your workspace neat and your connectors accessible.
- • **Certified Confidence:** UL and CSA listings guarantee compliance with industry safety standards for dry locations.
- • **Concrete-Tight Ready:** Approved for concrete-tight applications when properly taped—perfect for demanding projects.
- • **Rock-solid Connections:** Set screw design ensures a tight, reliable join between 1/2" EMT conduits.

## Overview

The SIGMA ENGINEERED SOLUTIONS ProConnex TC-511 is a 50-pack of 1/2" EMT set screw couplings crafted from durable zinc die-cast. Designed for secure conduit connections, these UL and CSA listed couplings are approved for concrete-tight applications when taped, making them ideal for professional-grade electrical conduit installations in dry environments.

## Description

The Sigma ProConnex EMT Set Screw Couplings are used to connect two lengths of steel EMT conduit. These die-cast couplings are suitable for indoor applications and approved for concrete-tight applications when taped.

Review: Nice packaging, arrived early! - I love that these come in a plastic canister with lid, all tidy, for stowing in my shed. I have a bunch of 5-foot 1/2" EMT conduit that I plan to put together in double or triple lengths to top t-post trellises as I get new beds built. I know that eventually I will use dozens of these connectors, so I was glad to get a good price on them. And they came earlier than expected!
Review: Price and listed conduit fittings - Great price and UL listed product. Thank you so much!

## Features

- Connects two lengths of 1/2-in EMT conduit
- Set screw type coupling
- Approved for concrete-tight applications when taped
- Zinc die-cast construction
- Product is UL and CSA listed, suitable for dry locations

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Sigma Engineered Solutions |
| Color | Gray |
| Connector Type | Coupling |
| Item dimensions L x W x H | 1.33 x 0.92 x 1.05 inches |
| Material | Die Cast Zinc |
| Size | No Size |

## Product Details

- **Brand:** Sigma Engineered Solutions
- **Color:** Gray
- **Connector Type:** Coupling
- **Exterior Finish:** Zinc
- **Item Weight:** 1.7 Pounds
- **Item dimensions L x W x H:** 1.33 x 0.92 x 1.05 inches
- **Material:** Die Cast Zinc
- **Size:** No Size
- **Thread Size:** ['1/2 inch']
- **Thread Type:** NPT

## Images

![SIGMA ENGINEERED SOLUTIONS ProConnex TC-511 EMT Set Screw Coupling 1/2" 50-Pack - Image 1](https://m.media-amazon.com/images/I/71+egMyOa-L.jpg)

## Questions & Answers

**Q: What size are the screws?**
A: 10/32

**Q: What's the size of the set screw? Is it a S1 or S2?**
A: I believe the question you’re asking is what type of screwdriver is needed it to turn the fastener S2 or a flat head

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice packaging, arrived early!
*by D***R on March 15, 2024*

I love that these come in a plastic canister with lid, all tidy, for stowing in my shed. I have a bunch of 5-foot 1/2" EMT conduit that I plan to put together in double or triple lengths to top t-post trellises as I get new beds built. I know that eventually I will use dozens of these connectors, so I was glad to get a good price on them. And they came earlier than expected!

### ⭐⭐⭐⭐⭐ Price and listed conduit fittings
*by N***N on April 10, 2024*

Great price and UL listed product. Thank you so much!

### ⭐⭐⭐⭐⭐ Great product
*by O***Y on August 15, 2020*

The coupling are very strong and work great. The price very good.

## Frequently Bought Together

- Sigma Electric TC-511 HOSE_PIPE_FITTING, No Size, Gray, 50 Count
- SIGMA ENGINEERED SOLUTIONS ProConnex TC-501 EMT Set Screw Connector 1/2" 50-Pack
- Sigma Electric ProConnex 1901 EMT One-Hole Strap 1/2-Inch, 100-Pack, 1/2 Inch, Gray, 100 Count

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**Shop now:** [https://www.desertcart.gr/products/17836261-sigma-engineered-solutions-proconnex-tc-511-emt-set-screw-coupling](https://www.desertcart.gr/products/17836261-sigma-engineered-solutions-proconnex-tc-511-emt-set-screw-coupling)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-24*