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{
  "Part_Identification": {
    "Part_Name": "BRACKET",
    "Drawing_Number": "A-6-1",
    "Material": "Mild Steel",
    "Finish": "Zinc Plate",
    "Scale": "2:1",
    "Drawn_By": "J. DOE",
    "Checked_By": "A. SMITH",
    "Approved_By_or_Engineer": "A. MITH",
    "Date_Original": "06/18/2026",
    "Date_Concern": null
  },
  "Material_and_Finish": {
    "Material": "Mild Steel",
    "Finish": "Zinc Plate",
    "Deburr": "Deburr all edges",
    "Material_Grade": null,
    "Finish_Specification": null,
    "Heat_Treatment": null,
    "Hardness": null
  },
  "General_Tolerances": {
    "Original_Drawing": "No explicit tolerance block shown",
    "Recommended": {
      "Linear": "+/-0.5 mm",
      "Angular": "+/-0.5 deg",
      "Radii": "+/-0.5 mm",
      "Break_Sharp_Edges": "0.2-0.5 mm"
    }
  },
  "Dimensions": {
    "Overall_Length_or_Width": "90.0",
    "Overall_Height": "50.0",
    "Lower_Hole_or_Feature_Spacing": "60.0",
    "Inner_Center_Spacing": "50.0",
    "Section_AA_Span": "75.0",
    "End_Extension": "8.0",
    "Thickness": "2.0",
    "Small_Section_Offset": "3.0",
    "Small_Section_Span": "10 mm"
  },
  "Holes": [
    {
      "Quantity": "2X",
      "Size": "10 mm",
      "Type": "THRU",
      "Original_Callout_Concern": "SC10 appears non-standard or unclear"
    },
    {
      "Quantity": "2X",
      "Size": "10 mm",
      "Type": "THRU",
      "Original_Callout_Concern": "1056 appears non-standard or unclear"
    }
  ],
  "Datums": {
    "Original_Drawing": "No datum references established",
    "Recommended": {
      "A": "Primary mounting or base surface",
      "B": "Secondary perpendicular face or edge",
      "C": "Datum hole or locating edge"
    }
  },
  "GD&T": {
    "Original_Drawing": "No GD&T frames provided",
    "Recommended": [
      {
        "Feature": "4X hole pattern",
        "Control": "Position",
        "Tolerance": "?0.5",
        "Datum_Reference_Frame": "A | B | C"
      },
      {
        "Feature": "Formed profile surface",
        "Control": "Profile of a surface",
        "Tolerance": "0.8",
        "Datum_Reference_Frame": "A | B | C"
      }
    ]
  },
  "Surface_Roughness": {
    "Original_Drawing": "No Ra surface finish shown",
    "Recommended": "Ra 3.2 um"
  },
  "Bend_and_Forming": {
    "Part_Type": "Formed sheet-metal bracket",
    "Section": "SECTION A-A",
    "Bend_Radii": {
      "Original_Drawing": "Not formally dimensioned",
      "Recommended": "4X R3.0"
    },
    "Formed_Profile_Control": "Recommended profile of surface 0.8 | A | B | C"
  },
  "Manufacturing_Process_Inference": [
    "Cut or blank mild steel sheet",
    "Punch or drill through holes",
    "Form or bend raised bridge features",
    "Deburr all edges",
    "Apply zinc plate finish"
  ],
  "PMI_Concerns": [
    "No explicit tolerance block",
    "Hole callouts SC10 and 1056 use non-standard formats",
    "No datum references established",
    "No GD&T frames",
    "No surface roughness Ra callouts",
    "Section A-A bend radii are not formally dimensioned",
    "Title block date 2044 appears anachronistic",
    "Material specification is incomplete",
    "Zinc plating specification is incomplete",
    "Units are not clearly stated"
  ]
}