The WHLAXLE3A axle is a FLANGE style axle made of 6061-T6 AL alloy. This axle has a 1.25 inch diameter bearing surface. The axle has 1.37 inch spacing between the 0.257 inch bolt holes on a 1.937 reference circle. This axle assembly comes with the AN1 axle nut.
Matco Aircraft Landing Systems axles that are aluminum are black anodized and steel axles are yellow zinc.