{
 "std": "ГОСТ 4028-63",
 "name": "Гвозди строительные. Конструкция и размеры",
 "name_en": "Building nails. Construction and dimensions",
 "status": "действует, ограничений применения в России нет (карточка Росстандарта)",
 "status_src": "https://protect.gost.ru/gost/details/79d8e7af-9f0f-467f-bed0-f50a47712819",
 "intro": "01.08.1964",
 "replaces": [
  "ГОСТ 3886-47",
  "ГОСТ 3887-47",
  "ГОСТ 4028-48",
  "ГОСТ 4031-48"
 ],
 "approved": "Госкомитет стандартов СССР, 06.08.1963, № 567",
 "changes": [
  {
   "doc": "Изменение № 1",
   "ius": "ИУС 11-1965",
   "approved": "октябрь 1965"
  },
  {
   "doc": "Изменение № 2",
   "ius": "ИУС 2-1981",
   "approved": "ноябрь 1980"
  },
  {
   "doc": "Изменение № 3",
   "ius": "ИУС 4-1988",
   "approved": "декабрь 1987"
  }
 ],
 "edition": "Стандартинформ, 2009, с Изм. 1-3",
 "oks": "77.140.65",
 "table1_flat_head": [
  {
   "d": 0.8,
   "l": [
    8,
    12
   ],
   "D_min": 1.6,
   "h_min": 0.48
  },
  {
   "d": 1.0,
   "l": [
    16
   ],
   "D_min": 2.0,
   "h_min": 0.6
  },
  {
   "d": 1.2,
   "l": [
    16,
    20,
    25
   ],
   "D_min": 2.4,
   "h_min": 0.72
  },
  {
   "d": 1.4,
   "l": [
    25,
    32,
    40
   ],
   "D_min": 2.8,
   "h_min": 0.84
  },
  {
   "d": 1.6,
   "l": [
    25,
    40,
    50
   ],
   "D_min": 3.2,
   "h_min": 0.96
  }
 ],
 "table2_conical_head": [
  {
   "d": 1.8,
   "l": [
    32,
    40,
    50,
    60
   ],
   "a": null,
   "D_min": 3.5,
   "h_min": 1.08
  },
  {
   "d": 2.0,
   "l": [
    40,
    50
   ],
   "a": 1.75,
   "D_min": 4.0,
   "h_min": 1.2
  },
  {
   "d": 2.5,
   "l": [
    50,
    60
   ],
   "a": 2.2,
   "D_min": 5.0,
   "h_min": 1.5
  },
  {
   "d": 3.0,
   "l": [
    70,
    80
   ],
   "a": 2.65,
   "D_min": 6.0,
   "h_min": 1.8
  },
  {
   "d": 3.5,
   "l": [
    90
   ],
   "a": 3.1,
   "D_min": 7.0,
   "h_min": 2.1
  },
  {
   "d": 4.0,
   "l": [
    100,
    120
   ],
   "a": 3.55,
   "D_min": 7.5,
   "h_min": 2.4
  },
  {
   "d": 5.0,
   "l": [
    120,
    150
   ],
   "a": 4.45,
   "D_min": 9.0,
   "h_min": 3.0
  },
  {
   "d": 6.0,
   "l": [
    150,
    200
   ],
   "a": 5.3,
   "D_min": 11.0,
   "h_min": 3.6
  },
  {
   "d": 8.0,
   "l": [
    250
   ],
   "a": 7.13,
   "D_min": 14.0,
   "h_min": 4.8
  }
 ],
 "mass_1000_kg_round": {
  "0.8×8": 0.032,
  "0.8×12": 0.051,
  "1×16": 0.1,
  "1.2×16": 0.147,
  "1.2×20": 0.183,
  "1.2×25": 0.219,
  "1.4×25": 0.302,
  "1.4×32": 0.385,
  "1.4×40": 0.482,
  "1.6×25": 0.397,
  "1.6×40": 0.633,
  "1.6×50": 0.791,
  "1.8×32": 0.64,
  "1.8×40": 0.787,
  "1.8×50": 0.967,
  "1.8×60": 1.16,
  "2×40": 0.949,
  "2×50": 1.19,
  "2.5×50": 1.87,
  "2.5×60": 2.23,
  "3×70": 3.77,
  "3×80": 4.33,
  "3.5×90": 6.6,
  "4×100": 9.5,
  "4×120": 11.5,
  "5×120": 17.8,
  "5×150": 21.9,
  "6×150": 32.4,
  "6×200": 43.1,
  "8×250": 96.2
 },
 "mass_factor": {
  "T": 0.85,
  "TP": 0.88
 },
 "designation": [
  "Гвозди П 1,2×25 ГОСТ 4028-63",
  "Гвозди К 2,5×60 ГОСТ 4028-63",
  "Гвозди Т 2,5×60 ГОСТ 4028-63",
  "Гвозди ТП 2,5×60 ГОСТ 4028-63"
 ],
 "source": "КРЕПИОН, krepion.ru, по официальному изданию стандарта"
}