--- product_id: 104514035 title: "1 1/4 inches BSP Flanged Basin Waste Brass Backnut" brand: "primaflow" price: "€ 8.46" currency: EUR in_stock: true category: "Primaflow" url: https://www.desertcart.pt/products/104514035-1-1-4-inches-bsp-flanged-basin-waste-brass-backnut store_origin: PT region: Portugal --- # Durable industrial-grade brass construction 1 1/4 inch BSP thread (actually 1 1/2 inch diameter) 55mm outer diameter precision fit 1 1/4 inches BSP Flanged Basin Waste Brass Backnut **Brand:** primaflow **Price:** € 8.46 **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?** € 8.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/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 - • **Robust Brass Build:** Industrial-grade brass offers long-lasting corrosion resistance and strength - • **True BSP Thread Sizing:** 1 1/4 inch BSP thread measures 1 1/2 inch diameter for guaranteed compatibility - • **Single Pack Convenience:** Available as a single unit, perfect for targeted repairs or upgrades - • **Precision Engineered Fit:** Exact 55mm flange diameter ensures seamless basin waste integration - • **User-Friendly Installation:** External hex drive and 46mm spanner size for quick, hassle-free fitting ## Overview This 1 1/4 inch BSP flanged basin waste brass backnut by Primaflow features a 55mm outer diameter and a fully threaded 1 1/4 inch BSP (1 1/2 inch actual) right-hand thread. Crafted from industrial-grade brass with an external hex drive, it ensures durable, corrosion-resistant performance and easy installation with a 46mm spanner size. Ideal for professional plumbing repairs and upgrades. ## Description Product description 1 1/4 inches BSP Flanged Basin Waste Brass Backnut Legal Disclaimer PLEASE NOTE: we only use reputable couriers, during peak times (particularly during the Covid-19 pandemic) delivery times may be delayed. We only sell products we physically have in stock and will dispatch your order on time, however please bear in mind that even with our best endevours delays may occur which we may not be able to control. ESDA Ltd cannot be held responsible for delays in delivery or any other consiquential loss. Full terms and conditions of purchase are available on request, your statutory rights are not affected. ## 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 | |---------------|-------| | ASIN | B00NW4WG3A | | Best Sellers Rank | 56,282 in DIY & Tools ( See Top 100 in DIY & Tools ) 32 in Flange Nuts | | Brand Name | Primaflow | | Colour | light brown | | Compatible Groove Diameter | 55 Millimeters | | Customer Reviews | 4.4 4.4 out of 5 stars (220) | | Drive Style | External Hex | | Exterior Finish | Brass | | Fastener Type | Flange | | Finish Types | Unfinished | | Grade Rating | Industrial | | Inside Thread Size | M14 | | Item Diameter | 55 Millimetres | | Item Dimensions | 10 x 56 x 56 millimetres | | Item Weight | 0.05 Kilograms | | Manufacturer | Primaflow | | Manufacturer Part Number | 10070336 | | Material Type | Brass | | Metal | Brass | | Number Of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Outside Diameter | 55 Millimetres | | Screw Head Style | Flange | | Size | Thread Size - 1 1/4 inches BSP | | Thread Class | Class 2A | | Thread Coverage | Fully Threaded | | Thread Size | M14 | | Thread Style | Right Hand | | Thread Type | British Standard Pipe | | Unit Count | 1.0 count | ## Product Details - **Brand:** Primaflow - **Colour:** light brown - **Exterior finish:** Brass - **Fastener type:** Flange - **Finish type:** Unfinished - **Item dimensions L x W x H:** 10 x 56 x 56 millimetres - **Item weight:** 0.05 Kilograms - **Material:** Brass - **Metal type:** Brass - **Thread size:** M14 ## Images ![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 1](https://m.media-amazon.com/images/I/41bk3OPkC9L.jpg) ![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 2](https://m.media-amazon.com/images/I/41XaHH2r6BL.jpg) ![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 3](https://m.media-amazon.com/images/I/31Rbbei66bL.jpg) ![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 4](https://m.media-amazon.com/images/I/41addpV6NkL.jpg) ![1 1/4 inches BSP Flanged Basin Waste Brass Backnut - Image 5](https://m.media-amazon.com/images/I/71i7IYIt+KL.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.pt/products/104514035-1-1-4-inches-bsp-flanged-basin-waste-brass-backnut](https://www.desertcart.pt/products/104514035-1-1-4-inches-bsp-flanged-basin-waste-brass-backnut) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-25*