---
product_id: 104514035
title: "1 1/4 inches BSP Flanged Basin Waste Brass Backnut"
brand: "primaflow"
price: "₨5096"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/104514035-1-1-4-inches-bsp-flanged-basin-waste-brass-backnut
store_origin: LK
region: Sri Lanka
---

# Exact 55mm outer diameter, 10mm thickness Durable solid brass construction Precision 1 1/4" BSP thread (measures 1.5" actual) 1 1/4 inches BSP Flanged Basin Waste Brass Backnut

**Brand:** primaflow
**Price:** ₨5096
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your plumbing game with precision brass power!

## Quick Answers

- **What is this?** 1 1/4 inches BSP Flanged Basin Waste Brass Backnut by primaflow
- **How much does it cost?** ₨5096 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/104514035-1-1-4-inches-bsp-flanged-basin-waste-brass-backnut)

## Best For

- primaflow enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from premium cast brass for corrosion resistance and long-term durability in wet environments.
- • **Compact & Lightweight:** At just 50g, this backnut offers robust performance without bulk, ideal for modern minimalist plumbing setups.
- • **Perfect Fit Every Time:** Engineered BSP threading ensures seamless compatibility with standard plumbing fixtures—no guesswork, no leaks.
- • **Effortless Installation:** Flanged head design with 46mm spanner size for quick, secure tightening by professionals and DIYers alike.
- • **Trusted Brand Assurance:** Manufactured by Primaflow, a name synonymous with quality plumbing components you can rely on.

## Overview

This 1 1/4 inch BSP flanged basin waste brass backnut, measuring an actual 1.5 inch diameter, is a high-quality plumbing component made from durable cast brass. Designed for easy installation with a 46mm spanner size and a 55mm outer diameter, it ensures a perfect fit and long-lasting performance in basin waste systems. Ideal for professionals and discerning DIY enthusiasts seeking reliable, corrosion-resistant hardware.

## Description

1 1/4 inches BSP Flanged Basin Waste Brass Backnut

## Features

- IMPORTANT SIZING NOTE - Most plumbing products are measured using BSP thread dimensions which measure 1/4 inch larger than that stated, therefore this 1 1/4 Inch BSP thread actually measures 1 1/2 Inch in diameter. If your thread measures 1 1/4 Inch in diameter then you require the 1 Inch version of this product
- This listing is for a Pack of 1
- Outer diameter - 55mm, thickness - 10mm
- Spanner Size - 46mm
- Threaded Brass Fittings

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Primaflow |
| Part number | 10070336 |
| Item Weight | 50 g |
| Manufacturer reference | 10070336 |
| Size | Thread Size - 1 1/4 inches BSP |
| Colour | light brown |
| Finish | Cast Brass |
| Material | Brass |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Head Style | Flange |
| Cutting Diameter | 1.5 Inches |
| Batteries included? | No |
| Batteries Required? | No |
| Item diameter | 1.5 Inches |

## Product Details

- **Material:** Brass
- **Fastener type:** Flange
- **Thread size:** 1 1/4 inches BSP
- **Exterior finish:** Brass
- **Colour:** light brown
- **Metal type:** Brass
- **Finish type:** Cast Brass
- **Brand:** Pipestation
- **Item weight:** 0.05 Kilograms
- **Thread type:** through-thread

## Images

![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 1](https://m.media-amazon.com/images/I/71i7IYIt+KL.jpg)
![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 2](https://m.media-amazon.com/images/I/7108OW36nPL.jpg)
![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 3](https://m.media-amazon.com/images/I/61+B1eYXi8L.jpg)
![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 4](https://m.media-amazon.com/images/I/71fOYN7pFPL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.lk/products/104514035-1-1-4-inches-bsp-flanged-basin-waste-brass-backnut](https://www.desertcart.lk/products/104514035-1-1-4-inches-bsp-flanged-basin-waste-brass-backnut)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-23*