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   3/8-24 UNF NF
Clear Hole = Drill ~ Probable Ø
  • Basic.375
  • +.0033/8 (.375) ~ .378
  • +.005V (.377) ~ .380
  • +.014W (.386) ~ .389
  • +.018525/64 (.3906) ~ .3936
Cut Tap % ~ Drill ~ Probable Ø
  • 75%Q (.332) ~ .3345
  • 61%R (.339) ~ .3415
Form Tap % ~ Drill ~ Probable Ø
  • 65%9.00mm (.3543) ~ .3568
Socket Head Screw Size
  • Basic Head Height.368 - .375
  • Basic Head Diameter.550 - .562
General Data
  • Internal Hex Size5/16
  • Stress Area in Sq. In..0878