Thread specification: M39 fine thread, pitch P=3mm, external thread tolerance class 6g
Nominal effective length: 140mm (shank length under cylinder head)
Cylinder head dimension: Head outer diameter dk=90mm, head height k=60mm
Internal hex drive: Opposite side width S=58.8mm, matched 58# Allen hex socket tool
Threaded segment length: Full thread design (140mm total rod fully threaded)
Single pump consumption: Multiple sets for crosshead cover, bearing retainer, fluid end valve body flange
