{
 "digest": null,
 "links": {
  "fits": [],
  "members": [],
  "cases": [],
  "assemblies": []
 },
 "prints": [],
 "part": {
  "id": "stepperonline-nema17-42ncm",
  "name": "STEPPERONLINE NEMA 17 Stepper 42Ncm 1.5A",
  "kind": "",
  "method": "",
  "vendor": "stepperonline",
  "sku": "",
  "model": "",
  "buy": [
   "https://www.omc-stepperonline.com/e-series-nema-17-bipolar-42ncm-59-49oz-in-1-5a-42x42x38mm-4-wires-w-1m-cable-connector-17he15-1504s"
  ],
  "url": "",
  "category": "motor",
  "owned_qty": 0
 },
 "facts": {
  "id": "stepperonline-nema17-42ncm",
  "name": "STEPPERONLINE NEMA 17 Stepper 42Ncm 1.5A",
  "aka": [
   "17HS15-1504S",
   "NEMA17 38mm"
  ],
  "vendor": "amazon",
  "url": null,
  "qty_owned": 4,
  "category": "motor",
  "frame": "origin plan bottom-left of 42.3 square body, Z=0 rear face, shaft +Z; mounting face at Z=38",
  "body": {
   "size_mm": [
    42.3,
    42.3,
    62.0
   ],
   "outline": "rect",
   "notes": "NEMA 17 corner chamfers ~4 legs (modeled cosmetically)"
  },
  "mounting": {
   "holes": [
    {
     "xy": [
      5.65,
      5.65
     ],
     "dia": 3.0,
     "thread": "M3",
     "depth": 4.5
    },
    {
     "xy": [
      36.65,
      5.65
     ],
     "dia": 3.0,
     "thread": "M3",
     "depth": 4.5
    },
    {
     "xy": [
      5.65,
      36.65
     ],
     "dia": 3.0,
     "thread": "M3",
     "depth": 4.5
    },
    {
     "xy": [
      36.65,
      36.65
     ],
     "dia": 3.0,
     "thread": "M3",
     "depth": 4.5
    }
   ],
   "pattern": "31.0 x 31.0 (NEMA 17 standard)",
   "shaft": {
    "dia": 5.0,
    "len": 24.0,
    "flat": "D-flat 0.5 deep x 15 at tip"
   },
   "notes": "pilot boss 22.0 dia x 2.0 - mounting plate needs 22.2+ bore; step.parts has NEMA17 L-bracket/mount plates"
  },
  "electrical": {
   "vin": "12-24V drive",
   "notes": "1.5A/phase, 42Ncm, 1.8deg, 4-wire bipolar, 1m cable; pairs with TMC2209 (amz) drivers"
  },
  "cad": {
   "file": "amz-nema17-42ncm.step",
   "fidelity": "envelope",
   "source": "amz-nema17-42ncm.py",
   "verified": true
  },
  "sources": [
   {
    "facts": "frame 42.3, holes 31x31 M3, pilot 22",
    "ref": "NEMA 17 standard geometry (step.parts catalog attributes agree)",
    "date": "2026-07-23"
   },
   {
    "facts": "body length 38, shaft 24, 42Ncm 1.5A",
    "ref": "Amazon listing (STEPPERONLINE)",
    "date": "2026-07-23"
   }
  ],
  "confidence": "body length + shaft length from listing, not a drawing - caliper-verify before fit-critical use. step.parts miss: no 38mm-body NEMA17 (nearest 34/40)"
 },
 "models": [
  {
   "handle": "sarg",
   "fidelity": "envelope",
   "verified": true,
   "visibility": "public",
   "url": "/m/sarg/stepperonline-nema17-42ncm",
   "files": [
    "amz-nema17-42ncm.py",
    "amz-nema17-42ncm.step",
    "part.yaml"
   ]
  }
 ],
 "related": {
  "notes": {
   "exact": [],
   "chip": [],
   "addr": []
  },
  "parts": {
   "variants": [],
   "interface": [],
   "mounting": [
    {
     "product": "ada-324-nema17-stepper",
     "name": "NEMA 17 Stepper 12V 350mA (Adafruit 324, short body)",
     "why": "pattern 31.0x31.0 mm",
     "url": "/p/ada-324-nema17-stepper"
    }
   ],
   "cooccur": [],
   "owners": [],
   "addr": []
  }
 }
}