{
 "std": "ГОСТ 17473-80",
 "name": "Винты с полукруглой головкой классов точности А и В",
 "name_en": "Half-rounded head screws, product grades A and B",
 "edition": "Издание 2006 г. с Изменениями № 1, 2",
 "intro": "01.01.1982",
 "replaces": "ГОСТ 17473-72",
 "status": "действует",
 "approved": "Постановление Госстандарта СССР от 30.06.1980 № 3276",
 "executions": {
  "1": "С прямым шлицем.",
  "2": "С крестообразным шлицем."
 },
 "d": [
  1,
  1.2,
  1.4,
  1.6,
  2,
  2.5,
  3,
  3.5,
  4,
  5,
  6,
  8,
  10,
  12,
  14,
  16,
  18,
  20
 ],
 "table1": {
  "P_krup": [
   0.25,
   0.25,
   0.3,
   0.35,
   0.4,
   0.45,
   0.5,
   0.6,
   0.7,
   0.8,
   1,
   1.25,
   1.5,
   1.75,
   2,
   2,
   2.5,
   2.5
  ],
  "P_melk": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   1,
   1.25,
   1.25,
   1.5,
   1.5,
   1.5,
   1.5
  ],
  "D": [
   "2,0",
   "2,3",
   "2,6",
   "3,0",
   "3,8",
   "4,5",
   "5,5",
   "6,0",
   "7,0",
   "8,5",
   "10",
   "13",
   "16",
   "18",
   "21",
   "24",
   "27",
   "30"
  ],
  "k": [
   "0,7",
   "0,8",
   "0,95",
   "1,1",
   "1,4",
   "1,7",
   "2,1",
   "2,4",
   "2,8",
   "3,5",
   "4,2",
   "5,6",
   "7",
   "8",
   "9,5",
   "11",
   "12",
   "14"
  ],
  "R1": [
   "1,1",
   "1,3",
   "1,4",
   "1,6",
   "2,0",
   "2,4",
   "2,9",
   "3,1",
   "3,6",
   "4,4",
   "5,1",
   "6,6",
   "8,1",
   "9,1",
   "10,6",
   "12,1",
   "13,6",
   "15,1"
  ],
  "cross": [
   null,
   null,
   null,
   null,
   "0",
   "1",
   "1",
   "2",
   "2",
   "2",
   "3",
   "3",
   "4",
   "4",
   null,
   null,
   null,
   null
  ],
  "m": [
   null,
   null,
   null,
   null,
   "2",
   "2,6",
   "3",
   "4,1",
   "4,6",
   "5,2",
   "7",
   "8,2",
   "10,6",
   "11,8",
   null,
   null,
   null,
   null
  ],
  "h": [
   null,
   null,
   null,
   null,
   "1,2",
   "1,3",
   "1,7",
   "1,8",
   "2,2",
   "2,8",
   "3,2",
   "4,6",
   "5,6",
   "6,8",
   null,
   null,
   null,
   null
  ],
  "g_max": [
   null,
   null,
   null,
   null,
   "1,3",
   "1,4",
   "1,8",
   "2,2",
   "2,5",
   "3,1",
   "3,7",
   "5,1",
   "6,3",
   "7,6",
   null,
   null,
   null,
   null
  ],
  "g_min": [
   null,
   null,
   null,
   null,
   "1,0",
   "1,1",
   "1,5",
   "1,7",
   "2,0",
   "2,6",
   "3,2",
   "4,6",
   "5,8",
   "7,1",
   null,
   null,
   null,
   null
  ],
  "b_long": [
   null,
   null,
   null,
   null,
   16,
   18,
   19,
   20,
   22,
   25,
   28,
   34,
   40,
   46,
   52,
   58,
   64,
   70
  ],
  "b_norm": [
   8,
   9,
   9,
   9,
   10,
   11,
   12,
   13,
   14,
   16,
   18,
   22,
   26,
   30,
   34,
   38,
   42,
   46
  ]
 },
 "l_all": [
  2,
  2.5,
  3,
  3.5,
  4,
  5,
  6,
  7,
  8,
  9,
  10,
  11,
  12,
  13,
  14,
  16,
  18,
  20,
  22,
  25,
  28,
  30,
  32,
  35,
  38,
  40,
  42,
  45,
  48,
  50,
  55,
  60,
  65,
  70,
  75,
  80,
  85,
  90,
  95,
  100,
  110,
  120
 ],
 "l_not_recommended": [
  2.5,
  3.5,
  7,
  13,
  18,
  22,
  28,
  32,
  38,
  42,
  48,
  85,
  95
 ],
 "l_range": {
  "1": [
   2,
   5
  ],
  "1.2": [
   2,
   7
  ],
  "1.4": [
   2,
   11
  ],
  "1.6": [
   2,
   14
  ],
  "2": [
   2.5,
   18
  ],
  "2.5": [
   3,
   25
  ],
  "3": [
   3,
   30
  ],
  "3.5": [
   4,
   35
  ],
  "4": [
   4,
   40
  ],
  "5": [
   6,
   50
  ],
  "6": [
   7,
   60
  ],
  "8": [
   12,
   70
  ],
  "10": [
   18,
   70
  ],
  "12": [
   22,
   85
  ],
  "14": [
   25,
   90
  ],
  "16": [
   30,
   95
  ],
  "18": [
   35,
   110
  ],
  "20": [
   40,
   120
  ]
 },
 "mass_1000": {
  "2": [
   0.018,
   0.028,
   0.04,
   0.056,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "2.5": [
   0.02,
   0.031,
   0.044,
   0.062,
   0.112,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "3": [
   0.022,
   0.034,
   0.049,
   0.067,
   0.121,
   0.202,
   0.344,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "3.5": [
   0.025,
   0.038,
   0.053,
   0.073,
   0.13,
   0.217,
   0.365,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "4": [
   0.027,
   0.041,
   0.058,
   0.079,
   0.139,
   0.232,
   0.387,
   0.527,
   0.763,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "5": [
   0.031,
   0.048,
   0.067,
   0.09,
   0.157,
   0.261,
   0.43,
   0.585,
   0.84,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "6": [
   null,
   0.054,
   0.076,
   0.101,
   0.175,
   0.29,
   0.474,
   0.644,
   0.916,
   1.58,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "7": [
   null,
   0.061,
   0.085,
   0.112,
   0.193,
   0.32,
   0.517,
   0.702,
   0.993,
   1.702,
   2.643,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "8": [
   null,
   null,
   0.094,
   0.123,
   0.211,
   0.349,
   0.56,
   0.761,
   1.069,
   1.824,
   2.818,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "9": [
   null,
   null,
   0.103,
   0.135,
   0.229,
   0.378,
   0.604,
   0.819,
   1.146,
   1.946,
   2.993,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "10": [
   null,
   null,
   0.112,
   0.146,
   0.247,
   0.407,
   0.647,
   0.878,
   1.222,
   2.068,
   3.167,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "11": [
   null,
   null,
   0.121,
   0.157,
   0.265,
   0.437,
   0.69,
   0.936,
   1.299,
   2.191,
   3.342,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "12": [
   null,
   null,
   null,
   0.168,
   0.283,
   0.466,
   0.734,
   0.995,
   1.375,
   2.313,
   3.516,
   7.003,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "13": [
   null,
   null,
   null,
   0.18,
   0.301,
   0.495,
   0.777,
   1.053,
   1.451,
   2.435,
   3.691,
   7.318,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "14": [
   null,
   null,
   null,
   0.191,
   0.319,
   0.525,
   0.82,
   1.112,
   1.528,
   2.557,
   3.866,
   7.634,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "16": [
   null,
   null,
   null,
   null,
   0.355,
   0.583,
   0.907,
   1.229,
   1.681,
   2.802,
   4.215,
   8.264,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "18": [
   null,
   null,
   null,
   null,
   0.391,
   0.642,
   0.994,
   1.346,
   1.834,
   3.046,
   4.564,
   8.896,
   15.19,
   null,
   null,
   null,
   null,
   null
  ],
  "20": [
   null,
   null,
   null,
   null,
   null,
   0.701,
   1.08,
   1.463,
   1.987,
   3.29,
   4.914,
   9.526,
   16.19,
   null,
   null,
   null,
   null,
   null
  ],
  "22": [
   null,
   null,
   null,
   null,
   null,
   0.759,
   1.167,
   1.58,
   2.139,
   3.535,
   5.263,
   10.157,
   17.19,
   25.02,
   null,
   null,
   null,
   null
  ],
  "25": [
   null,
   null,
   null,
   null,
   null,
   0.847,
   1.297,
   1.756,
   2.369,
   3.901,
   5.787,
   11.104,
   18.68,
   27.2,
   39.96,
   null,
   null,
   null
  ],
  "28": [
   null,
   null,
   null,
   null,
   null,
   null,
   1.427,
   1.931,
   2.598,
   4.268,
   6.311,
   12.05,
   20.18,
   29.37,
   42.93,
   null,
   null,
   null
  ],
  "30": [
   null,
   null,
   null,
   null,
   null,
   null,
   1.514,
   2.048,
   2.751,
   4.512,
   6.66,
   12.681,
   21.18,
   30.82,
   44.91,
   62.77,
   null,
   null
  ],
  "32": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   2.166,
   2.904,
   4.756,
   7.009,
   13.311,
   22.17,
   32.26,
   46.89,
   65.42,
   null,
   null
  ],
  "35": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   2.341,
   3.133,
   5.123,
   7.533,
   14.258,
   23.67,
   34.43,
   49.85,
   69.4,
   89.3,
   null
  ],
  "38": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   3.363,
   5.49,
   8.057,
   15.204,
   25.16,
   36.6,
   52.82,
   73.38,
   94.2,
   null
  ],
  "40": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   3.516,
   5.734,
   8.407,
   15.835,
   26.16,
   38.05,
   54.8,
   76.03,
   97.5,
   129.4
  ],
  "42": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   5.978,
   8.755,
   16.465,
   27.16,
   39.5,
   56.78,
   78.68,
   100.8,
   133.6
  ],
  "45": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   6.345,
   9.28,
   17.412,
   28.66,
   41.67,
   59.74,
   82.66,
   105.8,
   139.8
  ],
  "48": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   6.711,
   9.803,
   18.358,
   30.15,
   43.84,
   62.71,
   86.64,
   110.7,
   146.0
  ],
  "50": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   6.956,
   10.152,
   18.989,
   31.15,
   45.29,
   64.68,
   89.29,
   114.0,
   150.2
  ],
  "55": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   11.025,
   20.566,
   33.64,
   48.91,
   69.63,
   95.92,
   122.2,
   160.5
  ],
  "60": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   11.899,
   22.143,
   36.13,
   52.52,
   74.58,
   102.55,
   130.5,
   170.9
  ],
  "65": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   23.72,
   38.63,
   56.14,
   79.52,
   109.19,
   138.7,
   181.3
  ],
  "70": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   25.297,
   41.12,
   59.76,
   84.47,
   115.81,
   146.9,
   191.7
  ],
  "75": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   63.38,
   89.42,
   122.44,
   155.2,
   202.1
  ],
  "80": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   67.0,
   94.35,
   129.07,
   163.4,
   212.4
  ],
  "85": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   70.61,
   99.3,
   135.7,
   171.6,
   222.8
  ],
  "90": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   104.24,
   142.34,
   179.9,
   233.2
  ],
  "95": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   148.96,
   188.1,
   243.6
  ],
  "100": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   196.4,
   253.9
  ],
  "110": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   212.8,
   274.7
  ],
  "120": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   295.4
  ]
 },
 "mass_coef": {
  "алюминиевый сплав": 0.356,
  "латунь": 1.08
 },
 "notes": [
  "Диаметр гладкой части d1 — равен наружному диаметру резьбы или диаметру стержня под накатывание метрической резьбы по ГОСТ 19256-73.",
  "По соглашению между потребителем и изготовителем допускается изготовлять винты с длинами, не указанными в таблице 2.",
  "Резьба — по ГОСТ 24705-2004. Сбег и недорез резьбы — по ГОСТ 10549-80.",
  "Шлицы прямые — по ГОСТ 24669-81, крестообразные — по ГОСТ 10753-86.",
  "Радиус под головкой — по ГОСТ 24670-81.",
  "Допуски, методы контроля размеров и отклонений формы и расположения поверхностей — по ГОСТ 1759.1-82.",
  "Дефекты поверхности и методы контроля — по ГОСТ 1759.2-82.",
  "Технические требования — по ГОСТ 1759.0-87.",
  "Размеры m и h крестообразного шлица — справочные. Шероховатость 25 на торце стержня — только для винтов, обработанных резанием."
 ],
 "table2_notes": [
  "Длины в скобках применять не рекомендуется.",
  "Удлинённая длина резьбы предпочтительна.",
  "Винты со стержнем длиной менее длины резьбы (с учётом недореза) изготовляют с резьбой по всей длине стержня."
 ],
 "designation": [
  {
   "code": "Винт А.М8–6g×50.48 ГОСТ 17473-80",
   "text": "класс точности А, исполнение 1, d = 8 мм, крупный шаг, поле допуска 6g, l = 50 мм, нормальная длина резьбы b = 22 мм, класс прочности 4.8, без покрытия"
  },
  {
   "code": "Винт В2.М8×1–6g×50–34.48.016 ГОСТ 17473-80",
   "text": "класс точности В, исполнение 2, мелкий шаг 1 мм, удлинённая резьба b = 34 мм, класс прочности 4.8, покрытие цинковое хроматированное толщиной 6 мкм"
  }
 ],
 "refs": {
  "резьба": "ГОСТ 24705-2004",
  "сбег и недорез": "ГОСТ 10549-80",
  "шлицы прямые": "ГОСТ 24669-81",
  "шлицы крестообразные": "ГОСТ 10753-86",
  "радиус под головкой": "ГОСТ 24670-81",
  "стержень под накатывание резьбы": "ГОСТ 19256-73",
  "допуски": "ГОСТ 1759.1-82",
  "дефекты поверхности": "ГОСТ 1759.2-82",
  "технические требования": "ГОСТ 1759.0-87"
 },
 "replacements": [
  {
   "std": "DIN 7985 / ISO 7045",
   "note": "крестовый шлиц; головка другой формы — сферо-цилиндрическая, шире и выше (М4: 8 × 3,1 мм против 7 × 2,8 мм по ГОСТу)"
  },
  {
   "std": "DIN 85 / ISO 1580",
   "note": "прямой шлиц; головка другой формы — сферо-цилиндрическая, шире и ниже (М4: 8 × 2,4 мм против 7 × 2,8 мм по ГОСТу)"
  }
 ]
}