Splined hubs are manufactured from K1045 Carbon Steel. O.D is machined true to spline axis after broaching. All items are supplied in soft condition and may be induction or case hardened. Hub outside diameter reflects a tolerance of -0.000″ +0.001″. Length tolerance is + or- 0.030″. Welding operations should be carried out using a low hydrogen electrode. For best results use a stainless steel electrode such as Staincraft (CIG). Preheat parts to 200C temp before welding.