Back-counterbore

{
  "id": "MLC-T-IND-000369",
  "term": "Back-counterbore",
  "field": "Industrial and trades",
  "definition": "A machining operation that creates a cylindrical recess on the back side of a pre-drilled hole, typically to accommodate the head of a fastener. This process requires a specialized tool that can pass through the existing hole and then expand to cut the larger diameter. The resulting counterbore provides a flush or sub-flush seating for components.",
  "subject": "Machining",
  "references": [
    "Countersink (Wikipedia)"
  ],
  "translations": {
    "de": "Gegensenkung von rückseitig",
    "es": "contrataladrar desde atrás",
    "fr": "contre-alésage arrière"
  },
  "url": "https://mlchart.com/terminology/industrial/back-counterbore/"
}