{
  "category": "Socket Head Cap Screws",
  "vertical": "fastener-distribution",
  "source": "https://getclaro.ai/resources/attribute-library/fastener-distribution/socket-screws/",
  "status": "editorial-draft",
  "note": "Editorial reference template. Example values show format only and do not describe a real SKU. Not an official ETIM or ECLASS class.",
  "groups": [
    {
      "key": "identity",
      "name": "Identity",
      "check": "Preserve leading zeros and punctuation, validate against the manufacturer record, and check the GTIN check digit and packaging level before linking."
    },
    {
      "key": "technical",
      "name": "Technical specifications",
      "check": "Store the number and unit separately. Convert only when the source unit and test conditions are known."
    },
    {
      "key": "selection",
      "name": "Selection attributes",
      "check": "Map supplier wording to a governed vocabulary only after checking the source text and which variant it applies to."
    },
    {
      "key": "fit",
      "name": "Fit & compatibility",
      "check": "Keep model and series qualifiers. A similar-looking part is not a verified fit until a source says so."
    },
    {
      "key": "evidence",
      "name": "Evidence & compliance",
      "check": "Link the manufacturer document or label with its edition or date. Never copy a certification from a neighboring SKU."
    }
  ],
  "fields": [
    {
      "key": "thread_size",
      "label": "Thread Size",
      "group": "technical",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "M8-1.25"
    },
    {
      "key": "nominal_length",
      "label": "Nominal Length",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "mm",
      "example_format": "40 mm"
    },
    {
      "key": "thread_length",
      "label": "Thread Length",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "mm",
      "example_format": "28 mm (reference)"
    },
    {
      "key": "material",
      "label": "Material",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Alloy Steel"
    },
    {
      "key": "property_class_grade",
      "label": "Property Class / Grade",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "12.9"
    },
    {
      "key": "finish_coating",
      "label": "Finish / Coating",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Black Oxide"
    },
    {
      "key": "drive_size_hex_key_across_flats",
      "label": "Drive Size (Hex Key Across Flats)",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "mm",
      "example_format": "6 mm"
    },
    {
      "key": "manufacturer_part_number",
      "label": "Manufacturer Part Number",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "SHCS-M8-40-129BO"
    },
    {
      "key": "package_quantity",
      "label": "Package Quantity",
      "group": "identity",
      "priority": "core",
      "value_type": "number",
      "unit": "pcs",
      "example_format": "100"
    },
    {
      "key": "head_diameter",
      "label": "Head Diameter",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "mm",
      "example_format": "13.0 mm"
    },
    {
      "key": "head_height",
      "label": "Head Height",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "mm",
      "example_format": "8.0 mm"
    },
    {
      "key": "grip_length_unthreaded_shank",
      "label": "Grip Length (Unthreaded Shank)",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "mm",
      "example_format": "12 mm"
    },
    {
      "key": "minimum_tensile_strength",
      "label": "Minimum Tensile Strength",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "MPa",
      "example_format": "1,220 MPa"
    },
    {
      "key": "thread_class_tolerance",
      "label": "Thread Class / Tolerance",
      "group": "fit",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "5g6g"
    },
    {
      "key": "core_hardness",
      "label": "Core Hardness",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "text",
      "unit": "HRC",
      "example_format": "39-44 HRC"
    },
    {
      "key": "dimensional_standard",
      "label": "Dimensional Standard",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "ISO 4762 (DIN 912)"
    },
    {
      "key": "material_mechanical_spec",
      "label": "Material & Mechanical Spec",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "ISO 898-1 Property Class 12.9"
    },
    {
      "key": "country_of_origin",
      "label": "Country of Origin",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Taiwan"
    }
  ],
  "evidence_columns": [
    "raw_value",
    "normalized_value",
    "source_uri",
    "source_page_or_row",
    "confidence",
    "review_state",
    "last_verified"
  ],
  "normalization_examples": [
    {
      "attribute": "Thread Size",
      "variants": [
        "M8-1.25",
        "M8 x 1.25",
        "M8x1.25",
        "M8 1.25mm",
        "M8X1,25",
        "M8 coarse"
      ],
      "normalized": "M8-1.25"
    },
    {
      "attribute": "Material / Grade",
      "variants": [
        "18-8",
        "18/8 SS",
        "SS 18-8",
        "Stainless 18-8",
        "18-8 Stainless",
        "18-8 S/S"
      ],
      "normalized": "18-8 Stainless Steel"
    },
    {
      "attribute": "Finish / Coating",
      "variants": [
        "Black Oxide",
        "Blk Ox",
        "BO",
        "Black Oxide & Oil",
        "Thermal Black Oxide",
        "Black Ox."
      ],
      "normalized": "Black Oxide"
    }
  ]
}