Door Hardware Pre-Drill and Lock Bore Inspection

Inspection template for verifying door lock bore, backset, hinge mortise, and strike preparation dimensions on machined door slabs and frames to prevent hardware fit failures and rework.

Inspection Setup and Traceability

• Door or frame identifier matches shop drawing / hardware schedule
  Record the unique identifier, opening number, or part number and confirm it matches the approved drawing or hardware schedule.
• Inspection tools verified and suitable for measurement
  Confirm required tools are available and appropriate for the measured features, such as calipers, tape, bore gauge, depth gauge, and square.
• Reference document available at point of use
  Enter the drawing revision, hardware template, or SOP used for this inspection.

Lock Bore and Edge Prep Dimensions

• Lock bore diameter within specified tolerance
  Measure the main lock bore diameter and compare it to the approved hardware preparation requirement.
• Backset dimension matches specified hardware prep
  Measure from the door edge to the bore centerline and verify it matches the required backset.
• Cross-bore and edge-bore alignment is centered and square
  Verify the bore centerline is aligned to the door edge and the prep is not visibly out of square or offset.
• Edge bore diameter and depth match hardware requirements
  Measure the latch edge bore diameter and depth against the specified hardware prep.

Hinge Mortise and Door Edge Preparation

• Hinge mortise location matches specified setback
  Measure hinge location from the top or bottom of the door and verify it matches the approved layout.
• Hinge mortise depth and width are correct
  Measure mortise depth and width to confirm the hinge leaf seats flush without overcut or proud condition.
• Door edge is free of tear-out, splintering, or breakout at prep locations
  Inspect all machined prep areas for damage that would affect hardware fit or finish.

Strike Prep and Frame Alignment

• Strike prep location matches frame layout
  Measure the strike cutout location and verify it aligns with the latch centerline and approved frame prep.
• Strike opening dimensions match specified hardware
  Measure strike opening width, height, and depth as applicable for the installed hardware set.
• Frame prep is clean, square, and free of obstruction
  Verify the frame cutout is free of burrs, debris, deformation, or interference that would prevent proper strike installation.

Fit Verification and Disposition

• Trial fit confirms hardware seats without interference
  Perform a dry fit or template check where applicable to confirm the lockset, latch, hinges, and strike can be installed without binding.
• All dimensional non-conformances documented
  Record any deficiency, measured deviation, and disposition such as rework, hold, or accept-as-is with approval.
• Inspector approval for release to installation
  Inspector signs to confirm the door or frame prep is acceptable for release.