Technical Specifications Review

This 1/4″ NPT male extended pipe nipple delivers exceptional performance with its 18 TPI threading standard. The 4-inch extended length provides superior reach for complex plumbing configurations where standard nipples fall short. Testing confirms reliable sealing at maximum 1000 PSI working pressure across the entire temperature range.

The NPT (National Pipe Thread) design ensures universal compatibility with standard fittings. Quality machining produces clean, precise threads that create leak-proof connections without excessive thread compound. The extended length eliminates need for coupling multiple shorter nipples, reducing potential failure points.

Material construction withstands harsh operating conditions from -65°F to +265°F, making it suitable for both winter outdoor applications and high-temperature engine bay installations. Corrosion-resistant finish extends service life in moisture-prone environments.

Competitive Analysis

What’s the actual outer diameter of 1/4″ NPT threading?

1/4″ NPT has approximately 0.540″ outer diameter. The “1/4 inch” refers to nominal bore size, not thread diameter.

Can this handle hydraulic fluid at maximum pressure?

Yes, 1000 PSI rating accommodates most hydraulic applications. Ensure proper thread sealant and installation torque for hydraulic use.

Is thread sealant required for all applications?

NPT threads are designed to seal with sealant or tape. Always use appropriate thread compound for pressure applications.

What materials are compatible with this nipple?

Compatible with air, water, fuel, oil, coolant, and inert gases. Avoid corrosive chemicals that may attack steel construction.

“Needed this extended nipple for a tricky transmission cooler installation where space was tight. The 4-inch length was perfect – reached exactly where I needed without requiring multiple fittings. Threads are clean and precise, sealed up perfectly with Teflon paste.”

“Used several of these in an HVAC retrofit project. Quality is excellent for the price point. No leaks after six months under full system pressure. The extended length saved time and eliminated potential leak points compared to using couplers.”

“Professional mechanic here – these perform as well as more expensive name brands. Keep several sizes in my toolbox for custom applications. Would definitely order again for future projects.”