St. #6 > 1/4 Npt Adpt.

The St. #6 > 1/4 NPT Adpt. is a precision straight adapter fitting designed to bridge 6 AN male connections to 1/4 inch NPT male ports, making it an essential component for hydraulic systems, fuel lines, and pressure-tested fluid transfer applications. This adapter serves technicians, fabricators, and system builders who need reliable, leak-free transitions between SAE AN and national pipe thread standards. Whether you're assembling custom cooling systems, fuel delivery networks, or industrial hydraulic circuits, this adapter eliminates guesswork and ensures compatibility across different threaded port types.

Constructed from aluminum and finished in blue anodized coating, the St. #6 > 1/4 NPT Adpt. delivers durability and corrosion resistance in high-vibration and moisture-exposed environments. The straight configuration—with 6 AN male threads on one end and 1/4 inch NPT male threads on the other—allows direct end-to-end integration without offset or directional restrictions. Blue anodizing not only protects against oxidation and wear but also provides visual identification in complex plumbing layouts. The compact 1.05 x 0.85 x 2.95 inch footprint and lightweight 0.02 lb design make it suitable for space-constrained engine bays, chassis frames, and modular system builds.

This fitting works best in applications requiring frequent assembly and disassembly, where SAE AN fittings offer superior vibration resistance compared to flange or compression alternatives. Mechanics, performance shops, and OEM integrators rely on EARLS adapters to maintain consistent thread pitch and seal integrity under pressure cycles. Installation requires only standard wrenches and PTFE tape or thread sealant on the NPT side; the AN side uses a metal-to-metal crush seal. Compatible with fuel, coolant, oil, and most non-corrosive hydraulic fluids rated for aluminum systems.