Cannot find a standard 3/4-inch threaded copper nut at hardware stores to connect a new water heater without modifying existing pipes or buying expensive flex kits.

Hardware stores no longer stock standard threaded copper nuts, forcing DIYers to either cut and re-solder pipe or buy costly flex kits.

Opp. Score

Severity

3Medium

Willingness to Pay

implied

Added

Jun 23, 2026

Workarounds Described

visits multiple hardware stores
considers cutting copper pipe and buying $40 flex hose kit

Implied Software Gaps

Online catalog of legacy plumbing parts with real-time availability across suppliers

App Concept

NutFind Pro

An e-commerce platform and mobile app specializing in hard-to-find plumbing fittings and nuts. Users search by size/type and get matched with suppliers who still stock legacy parts, with fast shipping. Eliminates the need to visit multiple stores or settle for expensive alternatives.

Key Features

Search by dimension (thread size, pitch, material)
Real-time inventory from specialized plumbing suppliers
Mobile app with barcode scanner for quick lookup
One-click ordering with standard or expedited shipping

Target Users: DIY homeowners and small plumbing contractors struggling to find odd or discontinued fittings

Revenue Model: $5.99 flat shipping fee per order; 15% commission on supplier sales; premium $9.99/mo subscription for unlimited searches and price alerts

Existing Solutions Mentioned

hardware storesflex hose kit

Part of App Idea

Cannot find a standard 3/4-inch threaded copper nut at hardware stores to connect a new water heater without modifying existing pipes or buying expensive flex kits.

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