Meet the STZ Industries 1/4 in. MIP x 1/4 in. MIP Black Steel 5 in. Nipple — a compact, reliable connector built to bridge two female 1/4" fittings in tight piping runs. Crafted from durable steel and finished in a protective black oxide, this nipple is designed to withstand everyday use in plumbing, irrigation, and small-scale industrial lines.
Key benefits you’ll notice in real-world setups:
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Dual 1/4" MIP ends — two male threads (MIP) of 1/4" each, ideal for quick extensions between compatible fittings without bulky adapters.
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Solid steel construction — built for strength and long-term durability in demanding environments.
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Black finish — a protective coating that helps resist surface wear and provides a clean, professional look in exposed installs.
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5" length — a handy reach in tight spaces where shorter nipples won’t suffice.
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Lead-free — manufactured with lead-free content, supporting safe contact in potable water applications where permitted by code.
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High-temperature and pressure tolerance — rated for up to 400°F and 188 psi, enabling use in a range of hot and moderate-pressure systems.
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Bagged packaging — kept organized and protected during storage and transportation.
Who it's for: professional plumbers, HVAC and irrigation specialists, contractors, and DIY enthusiasts tackling installations where two female 1/4" fittings must be joined quickly and securely. It’s especially useful in compact appliances, small-diameter piping runs, and repair scenarios where space is limited but a reliable seal is non-negotiable.
Why this nipple stands out from alternatives: the 5" length provides added flexibility for alignment in crowded enclosures, while the dual MIP ends ensure compatibility with standard fittings without needing adapters. The lead-free construction supports safer, potable-water-friendly applications, and the robust steel with black finish offers durability against wear and environmental exposure.
Practical installation tips: use appropriate thread sealant or PTFE tape on each male thread, clean all mating surfaces before assembly, and hand-tighten before final wrench tightening to avoid cross-threading. Avoid overtightening to protect the integrity of the threads and the seal. Always confirm fit and code compliance for your specific project and fluid type.
STZ Industries delivers a dependable, purpose-built solution for extending and connecting 1/4" MIP lines. When you need a straightforward, resilient nipple that respects lead-free requirements and stands up to heat and pressure, this 5" black steel model is ready to perform.
