The WHLAXLE7 axle is a FLANGE style axle made of 4140 HT STEEL alloy. This axle has a 0.75 inch diameter bearing surface. The axle has 1.75 inch spacing between the four 0.25 inch bolt holes on a 2.475 reference circle. This axle assembly comes with the AN8 axle nut.
Matco Aircraft Landing Systems axles that are aluminum are black anodized and steel axles are yellow zinc.