73-87 Chevy _ GMC Trucks > Engine/Drivetrain

1/2” Oil Pressure Sender?

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Mike81K10:
NPT Thread Size & Pitch: 1/4-18 = Male Thread OD: 13.2 mm / 0.52 Inch = Female Thread ID: 11.2 mm / 0.44 Inch

Need to ask O'Reily if the 1/4 is NPT or Inches!

bd:

--- Quote from: Mike81K10 on May 08, 2022, 12:33:46 PM ---NPT Thread [measures] 13.2 mm [across]

--- End quote ---


This ^^^^^ should sum it up for you since 1/2" = 12.7 mm.  The two standards (1/4" NPT vs 1/2" USS) measure w/i 0.020" (0.5 mm) of each other.

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