Mil-s-6758, cond d4 mil spec 1st material response and qq-s-685, comp 4130, cond a-canceled fed spec 2nd material response
Mil-s-6758, comp 4130, cond d mil spec 2nd material response
Mil-s-6758, comp 4130, cond d mil spec single material response
Mil-s-6758 mil spec single material response shank or mil-t-6736 mil spec single material response shank
Mil-s-6758, sae 4130 mil spec 1st material response and mil-s-18729, comp 4130 mil spec 2nd material response
Mil-s-6758, cond d4 mil spec single material response