---
product_id: 9285975
title: "Fernco, 1056-64, Flexible Coupling, For Pipe Size 6\" x 4\""
brand: "fernco"
price: "188.64 DT"
currency: TND
in_stock: true
category: "Fernco"
url: https://www.desertcart.tn/products/9285975-fernco-1056-64-flexible-coupling-for-pipe-size-6-x
store_origin: TN
region: Tunisia
---

# Underground rated & multi-material compatible Fast, tool-friendly installation 6" x 4" flexible coupling size Fernco, 1056-64, Flexible Coupling, For Pipe Size 6" x 4"

**Brand:** fernco
**Price:** 188.64 DT
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect with confidence—flexibility meets durability in every seal!

## Quick Answers

- **What is this?** Fernco, 1056-64, Flexible Coupling, For Pipe Size 6" x 4" by fernco
- **How much does it cost?** 188.64 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/9285975-fernco-1056-64-flexible-coupling-for-pipe-size-6-x)

## Best For

- fernco enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Legacy:** From a brand with 60+ years of innovation and a 4.6-star rating—join the pros who rely on Fernco.
- • **Effortless Installation:** Secure your pipes in minutes with just a screwdriver or wrench—no hassle, no downtime.
- • **Universal Compatibility:** Seamlessly connects cast iron, PVC, copper, lead, and steel pipes for ultimate versatility.
- • **Reliable Seal Every Time:** Engineered to provide a positive, leak-proof seal that keeps your drainage system flawless.
- • **Built for the Underground:** Durable and rated for underground use, ensuring long-lasting performance beneath the surface.

## Overview

The Fernco 1056-64 Flexible Coupling is a 6" x 4" pipe connector designed for fast, tool-friendly installation. Compatible with multiple pipe materials including cast iron, PVC, copper, lead, and steel, it provides a reliable, leak-proof seal ideal for vent, drain, sewer, and waste piping. Rated for underground use and backed by Fernco’s 60+ years of manufacturing excellence, this coupling ensures durable, versatile performance trusted by professionals and homeowners alike.

## Description

Product Description Fernco 1056-64 6" x 4" Flexible Pipe Coupling (Connects Cast Iron, PVC, Steel or Lead) From the Manufacturer Established in 1964, Fernco is a global leader in manufacturing high-quality flexible pipe couplings, drainage, and plumbing systems. Renowned for exceptional performance and reliability, Fernco products are trusted by homeowners and professionals alike. With a commitment to innovation and dependability, Fernco has earned a strong reputation for delivering superior solutions. As a proud USA manufacturer, Fernco is dedicated to maintaining the highest standards of production and engineering.

## Features

- Fast and easy installation with a screwdriver, nut driver, or socket wrench
- For vent, drain, sewer, and waste piping
- Provides a positive seal for drain connections
- Underground rated
- Compatible with cast iron, plastic (PVC), copper, lead and steel piping

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQM0JC |
| Best Sellers Rank | #105,384 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,381 in Pipe Fittings |
| Brand Name | Fernco |
| Color | Black |
| Connector Type | Coupling |
| Customer Reviews | 4.6 4.6 out of 5 stars (155) |
| Exterior Finish | Black |
| Global Trade Identification Number | 00018578000131, 00018578015586 |
| Included Components | P1056-64 Flexible PVC Pipe Coupling |
| Item Dimensions | 4.8 x 6.81 x 5.56 inches |
| Item Type Name | Flexible PVC Pipe Coupling |
| Item Weight | 0.81 Pounds |
| Manufacturer | Fernco Inc. |
| Manufacturer Part Number | P1056-64 |
| Manufacturer Warranty Description | Warranty |
| Material Type | Polyvinyl Chloride |
| Model Number | 1056-64 |
| Number of Pieces | 1 |
| Size | 6" x 4" |
| Thread Size | 6.85 inches |
| Thread Type | NPT |
| UPC | 018578015586 018578000131 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Fernco
- **Color:** Black
- **Connector Type:** Coupling
- **Exterior Finish:** Black
- **Item Weight:** 0.81 Pounds
- **Item dimensions L x W x H:** 4.8 x 6.81 x 5.56 inches
- **Material:** Polyvinyl Chloride
- **Size:** 6" x 4"
- **Thread Size:** 6.85 inches
- **Thread Type:** NPT

## Images

![Fernco, 1056-64, Flexible Coupling, For Pipe Size 6" x 4" - Image 1](https://m.media-amazon.com/images/I/71tRnYFGtLL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: will this work on connecting a 6" cast iron to a 4" clay sewer line??**
A: No, the 4" side on the P1056-64 is a nominal 4.46" inside diameter according to Fernco so it too small for 4" clay. The Fernco 1002-46 is designed for 6" PVC/cast iron to 4" clay and according to Fernco.com has a 6.39" by 5.18" inside diameter. Haven't worked with clay pipe but according to the sizing information from the Fernco site, any adapter with a clay connection requires that side of the adapter to be sized just for clay. Hope this helps.

**Q: Will this work on connecting a 6" dsw sch 40 pvc pipe to a sdr 35 4" pipe?**
A: It will work but because sdr 35 is thinner wall than sch 40 be careful not to over tighten the connection to the 35.

**Q: What are the inner diameter dimensions?**
A: Its difficult to measure as it is flexible and not perfectly round when not installed on a pipe.  As close as I can get the inside diameters are 4 1/2 and 6 1/2 inches.  Fits 4 inch schedule 40 PVC and the top fitting on a IBC container which is what I used it for.

**Q: 12"coupling reduce to 6"**
A: No. Mine fit loosely on an 8" to 6".

## Frequently Bought Together

- Fernco 1056-64 6" x 4" Flexible Pipe Coupling (Connects Cast Iron, PVC, Steel or Lead)
- Fernco 1056-66 6-in. Flexible PVC Pipe Coupling for Cast Iron/Plastic/Steel Plumbing Connections in Black
- Fernco 1056-86 Flexible Pipe Coupling 8” CI/Plastic/Steel to 6” CI/Plastic/Steel

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-05*