What is the hinge backset for 1 3/4" thick door?

Hinge backset is the dimension from the leading edge of the hinge to either the stop on the frame or to the stop face (push side) of the door.

  • For operating clearance, the hinge backset on the door is 1/16" less (smaller) than the hinge backset on the frame.
  • The method or measuring hinge backset varies between SDI and NAAMM/HMMA. Refer to the notes section of this solution.
    • SDI measures to the edge of the hinge
    • NAAMM/HMMA measures to the edge of the cutout

 For 1 3/4" doors prepared with 4 1/2" or 5" butt hinges (Steelcraft standard hinge backset):

  • Frame = 5/16" (leading edge of hinge to the frame stop)
  • Door = 1/4"  (leading edge of hinge to the stop face of the door)

 For special thickness doors (over 1 3/4" thick): Hinge size must be specified

  • Frame = Backset and Hinge size must be specified
  • Door = Steelcraft does not supply special thickness doors

For 1 3/8" doors prepared with 3 1/2" (Steelcraft standard hinge backset):

  • Frame = 5/16" (leading edge of hinge to the frame stop)
  • Door = Steelcraft does not supply 1 3/8" doors.

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