Blackline Atlas Group 4 Shaft 770mm 18 Spline
Atlas Group 4 Halfshaft 770mm Long - 18 Tooth.
All blackline halfshafts Group 1 and Group 4 are manufactured from 4340 allot steel and have induction hardened teeth to Rockwell 50 HRC specifications. 4340 is about twice as strong as 1040 ( the material which OEM halfshafts are normally manufactured from). It has a high degree of ductility to absorb shock loadings of abrupt acceleration, taking some loads off the differential and CWP. However, it has a very high yield strangth to sustain high torque loads without failure. 4340 is thye ideal halfshaft material.
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