6an Alm. Crush Washers 10pk

The 6AN Alm. Crush Washers 10pk from FRAGOLA are precision-engineered sealing components designed for high-pressure hydraulic and fuel line assemblies in automotive, motorsport, and industrial applications. These aluminum crush washers serve a critical function: creating a reliable, leak-proof seal at connection points where AN (Army-Navy) fittings meet ports and manifolds. Whether you're building a custom fuel system, restoring a classic vehicle, or assembling performance hydraulic lines, this 10-pack provides the consumable washers needed for multiple connections without repeated trips to the supplier.

Each washer in this set is manufactured from aluminum with a 9/16-inch inner diameter (ID), specifically sized for 6AN fittings—a standard in racing, fuel injection, and transmission cooler line systems. Crush washers work by deforming under torque, conforming to the mating surfaces and filling micro-imperfections that would otherwise allow fluid to seep past. The aluminum construction provides the ideal balance of softness for proper deformation and durability to prevent extrusion under pressure cycles. This material choice is superior to steel for AN applications because it crushes predictably without galling or damaging the fitting threads, ensuring a repeatable, tight seal across all ten washers in the pack.

Technicians, engine builders, and fuel system integrators benefit most from stocking this 10-pack, as crush washers are wear items replaced each time a connection is assembled or serviced. Proper installation requires positioning the washer between the fitting shoulder and the port surface, then tightening the AN fitting to specification—typically 1.5 to 2 times the fitting size in foot-pounds. Never reuse a crush washer after disassembly; the deformation is permanent, and reuse compromises the seal. Compatible with all standard 6AN male and female ports found in LS engine fuel rails, transmission lines, and aftermarket manifolds, this FRAGOLA set ensures you always have fresh washers on hand for leak-free performance.