{
 "object": "npt-thread-envelopes",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "npt-1-8-male",
   "step": "/files/hardware/npt-bsp-thread-envelopes/npt-1-8-male.step",
   "stl": "/files/hardware/npt-bsp-thread-envelopes/npt-1-8-male.stl",
   "note": "1/8 NPT male, major OD 10.29 mm, 27 TPI, 6.7 mm effective thread length (L2); plain cylinder at OD (taper not modeled)"
  },
  {
   "name": "npt-1-4-male",
   "step": "/files/hardware/npt-bsp-thread-envelopes/npt-1-4-male.step",
   "stl": "/files/hardware/npt-bsp-thread-envelopes/npt-1-4-male.stl",
   "note": "1/4 NPT male, major OD 13.72 mm, 18 TPI, 10.2 mm effective thread length (L2); plain cylinder at OD (taper not modeled)"
  },
  {
   "name": "npt-3-8-male",
   "step": "/files/hardware/npt-bsp-thread-envelopes/npt-3-8-male.step",
   "stl": "/files/hardware/npt-bsp-thread-envelopes/npt-3-8-male.stl",
   "note": "3/8 NPT male, major OD 17.15 mm, 18 TPI, 10.4 mm effective thread length (L2); plain cylinder at OD (taper not modeled)"
  },
  {
   "name": "npt-1-2-male",
   "step": "/files/hardware/npt-bsp-thread-envelopes/npt-1-2-male.step",
   "stl": "/files/hardware/npt-bsp-thread-envelopes/npt-1-2-male.stl",
   "note": "1/2 NPT male, major OD 21.34 mm, 14 TPI, 13.6 mm effective thread length (L2); plain cylinder at OD (taper not modeled)"
  },
  {
   "name": "npt-3-4-male",
   "step": "/files/hardware/npt-bsp-thread-envelopes/npt-3-4-male.step",
   "stl": "/files/hardware/npt-bsp-thread-envelopes/npt-3-4-male.stl",
   "note": "3/4 NPT male, major OD 26.67 mm, 14 TPI, 13.9 mm effective thread length (L2); plain cylinder at OD (taper not modeled)"
  },
  {
   "name": "npt-1-male",
   "step": "/files/hardware/npt-bsp-thread-envelopes/npt-1-male.step",
   "stl": "/files/hardware/npt-bsp-thread-envelopes/npt-1-male.stl",
   "note": "1 NPT male, major OD 33.4 mm, 11.5 TPI, 17.3 mm effective thread length (L2); plain cylinder at OD (taper not modeled)"
  }
 ]
}