538121
Piston, Valve, Pitchlock
General Characteristics Item Description: Steel AMS6272;EXTERNAL shoulderes casehardened;rockwell C core hardness 26-39;2.203 in. min 2.213 in. max LG;0.5994 in. min 0.5996 in. max od of SHOULDERS;0.2517 in. min 0.2522 in. max bore 1.755 in. deep, counterbored 0.430 in. min 0.440 in. max dia to 1.205 in. depth
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