The WHLAXLE6M axle is a FLANGE style axle made of 2024-T351 AL alloy. This axle has a 1.5 inch diameter bearing surface. The axle has 1.125 inch spacing between the two 0.313 & two 0.375 inch bolt holes on a 2.25 reference circle. This axle assembly comes with the AN6 axle nut.
Matco Aircraft Landing Systems axles that are aluminum are black anodized and steel axles are yellow zinc.