{
 "std": "ГОСТ 17475-80",
 "name": "Винты с потайной головкой классов точности А и В",
 "name_en": "Countersunk head screws, product grades A and B",
 "edition": "Переиздание 2008 г. с Изменениями № 1, 2",
 "intro": "01.01.1982",
 "replaces": "ГОСТ 17475-72",
 "status": "действует",
 "approved": "Постановление Госстандарта СССР от 30.06.1980 № 3277",
 "sev": "СТ СЭВ 2652-80",
 "mks": "21.060.10",
 "okp": "12 8400",
 "executions": {
  "1": "С прямым шлицем.",
  "2": "С крестообразным шлицем."
 },
 "head_angle_deg": 90,
 "R_under_head": "не более 0,1d",
 "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": [
   "1,9",
   "2,3",
   "2,6",
   "3,0",
   "3,8",
   "4,7",
   "5,6",
   "6,5",
   "7,4",
   "9,2",
   "11,0",
   "14,5",
   "18,0",
   "21,5",
   "25",
   "28,5",
   "32,5",
   "36,0"
  ],
  "k": [
   "0,6",
   "0,72",
   "0,84",
   "0,96",
   "1,2",
   "1,5",
   "1,65",
   "1,93",
   "2,2",
   "2,5",
   "3",
   "4",
   "5",
   "6",
   "7",
   "8",
   "9",
   "10"
  ],
  "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",
   "2,7",
   "2,8",
   "4,0",
   "4,3",
   "4,6",
   "6,5",
   "7,5",
   "9,7",
   "10,7",
   null,
   null,
   null,
   null
  ],
  "h": [
   null,
   null,
   null,
   null,
   "1,1",
   "1,4",
   "1,5",
   "1,7",
   "2,0",
   "2,3",
   "2,7",
   "3,7",
   "4,6",
   "5,6",
   null,
   null,
   null,
   null
  ],
  "g_max": [
   null,
   null,
   null,
   null,
   "1,2",
   "1,55",
   "1,7",
   "2,0",
   "2,3",
   "2,6",
   "3,3",
   "4,3",
   "5,4",
   "6,4",
   null,
   null,
   null,
   null
  ],
  "g_min": [
   null,
   null,
   null,
   null,
   "0,9",
   "1,25",
   "1,4",
   "1,5",
   "1,8",
   "2,1",
   "2,8",
   "3,8",
   "4,9",
   "5,9",
   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,
  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": [
  3.5,
  7,
  13,
  18,
  22,
  28,
  32,
  38,
  42,
  48,
  85,
  95
 ],
 "l_range": {
  "1": [
   2,
   10
  ],
  "1.2": [
   2,
   12
  ],
  "1.4": [
   3,
   12
  ],
  "1.6": [
   3,
   16
  ],
  "2": [
   3,
   20
  ],
  "2.5": [
   3.5,
   25
  ],
  "3": [
   3.5,
   30
  ],
  "3.5": [
   5,
   35
  ],
  "4": [
   5,
   40
  ],
  "5": [
   6,
   50
  ],
  "6": [
   8,
   60
  ],
  "8": [
   10,
   80
  ],
  "10": [
   12,
   100
  ],
  "12": [
   16,
   100
  ],
  "14": [
   25,
   100
  ],
  "16": [
   30,
   100
  ],
  "18": [
   35,
   110
  ],
  "20": [
   40,
   120
  ]
 },
 "mass_1000": {
  "2": [
   0.013,
   0.021,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "3": [
   0.018,
   0.028,
   0.039,
   0.052,
   0.091,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "3.5": [
   0.02,
   0.031,
   0.043,
   0.058,
   0.1,
   0.171,
   0.254,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "4": [
   0.022,
   0.034,
   0.048,
   0.063,
   0.109,
   0.186,
   0.276,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "5": [
   0.026,
   0.041,
   0.057,
   0.075,
   0.127,
   0.215,
   0.319,
   0.461,
   0.624,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "6": [
   0.031,
   0.048,
   0.066,
   0.086,
   0.145,
   0.245,
   0.362,
   0.519,
   0.701,
   1.147,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "7": [
   0.035,
   0.054,
   0.075,
   0.097,
   0.163,
   0.274,
   0.406,
   0.576,
   0.777,
   1.269,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "8": [
   0.039,
   0.061,
   0.084,
   0.108,
   0.181,
   0.303,
   0.449,
   0.635,
   0.854,
   1.391,
   2.096,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "9": [
   0.044,
   0.068,
   0.093,
   0.12,
   0.199,
   0.333,
   0.492,
   0.693,
   0.93,
   1.513,
   2.271,
   null,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "10": [
   0.048,
   0.074,
   0.102,
   0.131,
   0.217,
   0.362,
   0.536,
   0.752,
   1.007,
   1.636,
   2.445,
   4.77,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "11": [
   null,
   0.081,
   0.111,
   0.142,
   0.235,
   0.391,
   0.579,
   0.81,
   1.083,
   1.758,
   2.62,
   5.085,
   null,
   null,
   null,
   null,
   null,
   null
  ],
  "12": [
   null,
   0.088,
   0.12,
   0.153,
   0.253,
   0.421,
   0.622,
   0.869,
   1.159,
   1.88,
   2.794,
   5.4,
   9.05,
   null,
   null,
   null,
   null,
   null
  ],
  "13": [
   null,
   null,
   null,
   0.165,
   0.271,
   0.45,
   0.666,
   0.927,
   1.236,
   2.002,
   2.969,
   5.716,
   9.55,
   null,
   null,
   null,
   null,
   null
  ],
  "14": [
   null,
   null,
   null,
   0.176,
   0.289,
   0.479,
   0.709,
   0.986,
   1.312,
   2.124,
   3.144,
   6.031,
   10.05,
   null,
   null,
   null,
   null,
   null
  ],
  "16": [
   null,
   null,
   null,
   0.198,
   0.325,
   0.538,
   0.796,
   1.103,
   1.465,
   2.369,
   3.493,
   6.662,
   11.06,
   16.8,
   null,
   null,
   null,
   null
  ],
  "18": [
   null,
   null,
   null,
   null,
   0.361,
   0.597,
   0.882,
   1.22,
   1.618,
   2.613,
   3.842,
   7.293,
   12.05,
   18.25,
   null,
   null,
   null,
   null
  ],
  "20": [
   null,
   null,
   null,
   null,
   0.397,
   0.656,
   0.969,
   1.337,
   1.771,
   2.857,
   4.191,
   7.924,
   13.05,
   19.69,
   null,
   null,
   null,
   null
  ],
  "22": [
   null,
   null,
   null,
   null,
   null,
   0.714,
   1.056,
   1.454,
   1.924,
   3.102,
   4.541,
   8.555,
   14.05,
   21.14,
   null,
   null,
   null,
   null
  ],
  "25": [
   null,
   null,
   null,
   null,
   null,
   0.802,
   1.186,
   1.63,
   2.153,
   3.468,
   5.064,
   9.501,
   15.54,
   23.31,
   33.17,
   null,
   null,
   null
  ],
  "28": [
   null,
   null,
   null,
   null,
   null,
   null,
   1.315,
   1.805,
   2.383,
   3.835,
   5.588,
   10.447,
   17.04,
   25.49,
   36.13,
   null,
   null,
   null
  ],
  "30": [
   null,
   null,
   null,
   null,
   null,
   null,
   1.402,
   1.922,
   2.536,
   4.079,
   5.938,
   11.079,
   18.04,
   26.93,
   38.11,
   51.67,
   null,
   null
  ],
  "32": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   2.039,
   2.689,
   4.324,
   6.287,
   11.709,
   19.03,
   28.38,
   40.09,
   54.32,
   null,
   null
  ],
  "35": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   2.215,
   2.918,
   4.69,
   6.811,
   12.655,
   20.53,
   30.55,
   43.06,
   58.3,
   75.89,
   null
  ],
  "38": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   3.147,
   5.057,
   7.335,
   13.602,
   22.02,
   32.72,
   46.02,
   62.27,
   80.83,
   null
  ],
  "40": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   3.3,
   5.301,
   7.684,
   14.233,
   23.02,
   34.17,
   48.0,
   64.93,
   84.13,
   106.9
  ],
  "42": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   5.546,
   8.034,
   14.864,
   24.02,
   35.62,
   49.99,
   67.58,
   87.42,
   111.0
  ],
  "45": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   5.912,
   8.557,
   15.81,
   25.52,
   37.79,
   52.94,
   71.56,
   92.36,
   117.3
  ],
  "48": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   6.279,
   9.082,
   16.756,
   27.01,
   39.96,
   55.91,
   75.53,
   97.31,
   123.5
  ],
  "50": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   6.523,
   9.43,
   17.387,
   28.01,
   41.41,
   57.89,
   78.19,
   100.6,
   127.6
  ],
  "55": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   10.304,
   18.964,
   30.5,
   45.03,
   62.83,
   84.82,
   108.84,
   138.0
  ],
  "60": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   11.177,
   20.541,
   33.0,
   48.64,
   67.78,
   91.45,
   117.08,
   148.4
  ],
  "65": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   22.118,
   35.49,
   52.26,
   72.72,
   98.08,
   125.31,
   158.8
  ],
  "70": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   23.695,
   37.98,
   55.88,
   77.67,
   104.71,
   133.55,
   169.1
  ],
  "75": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   25.272,
   40.47,
   59.5,
   82.61,
   111.34,
   141.78,
   179.5
  ],
  "80": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   26.849,
   42.97,
   63.12,
   87.56,
   117.97,
   150.01,
   189.9
  ],
  "85": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   45.46,
   66.73,
   92.5,
   124.6,
   158.26,
   200.3
  ],
  "90": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   47.95,
   70.35,
   97.44,
   131.23,
   166.49,
   210.7
  ],
  "95": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   50.45,
   73.97,
   102.39,
   137.85,
   174.73,
   221.0
  ],
  "100": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   52.94,
   77.59,
   107.33,
   144.49,
   182.97,
   231.4
  ],
  "110": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   199.44,
   252.2
  ],
  "120": [
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   null,
   272.9
  ]
 },
 "mass_coef": {
  "алюминиевый сплав": 0.356,
  "латунь": 1.08
 },
 "mass_misprints_fixed": [
  {
   "d": 2,
   "l": 20,
   "printed": 0.394,
   "fixed": 0.397
  },
  {
   "d": 2.5,
   "l": 20,
   "printed": 0.665,
   "fixed": 0.656
  },
  {
   "d": 6,
   "l": 8,
   "printed": 2.091,
   "fixed": 2.096
  },
  {
   "d": 8,
   "l": 35,
   "printed": 12.556,
   "fixed": 12.655
  },
  {
   "d": 12,
   "l": 18,
   "printed": 18.97,
   "fixed": 18.25
  },
  {
   "d": 12,
   "l": 20,
   "printed": 21.14,
   "fixed": 19.69
  }
 ],
 "notes": [
  "Диаметр гладкой части d1 — равен наружному диаметру резьбы или диаметру стержня под накатывание метрической резьбы по ГОСТ 19256-73.",
  "Радиус под головкой R — не более 0,1d.",
  "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.",
  "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 17475-80",
   "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 17475-80",
   "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"
  }
 ],
 "designation_misprint": "В издании 2008 г. второй пример напечатан как «Винт М2.М8×1–6g×50–34.48.016» — это опечатка: по тексту стандарта винт класса точности В, исполнения 2, то есть «В2».",
 "refs": {
  "резьба": "ГОСТ 24705-2004",
  "сбег и недорез": "ГОСТ 10549-80",
  "шлицы прямые": "ГОСТ 24669-81",
  "шлицы крестообразные": "ГОСТ 10753-86",
  "стержень под накатывание резьбы": "ГОСТ 19256-73",
  "допуски": "ГОСТ 1759.1-82",
  "дефекты поверхности": "ГОСТ 1759.2-82",
  "технические требования": "ГОСТ 1759.0-87"
 },
 "analogs": [
  {
   "std": "DIN 963",
   "note": "прямой шлиц (исполнение 1): резьба, высота головки, длина резьбы и ряд длин те же; диаметр головки совпадает, кроме М4 (7,5 мм против 7,4) и М12, М16, М18 (шире на 0,5 мм)"
  },
  {
   "std": "DIN 965",
   "note": "крестовый шлиц (исполнение 2): головка как у DIN 963; номер креста у М2 и М8 другой — PH1 и PH4 против № 0 и № 3 по ГОСТу; у М1,6 крестообразного шлица в ГОСТе нет"
  },
  {
   "std": "ISO 2009 / ISO 7046",
   "note": "международные преемники DIN 963 / DIN 965, но головка с М3,5 крупнее и выше (М4: 8,4 × 2,7 мм против 7,4 × 2,2 по ГОСТу)"
  }
 ],
 "not_analogs": [
  {
   "std": "ГОСТ 17474-80 / DIN 964 / DIN 966",
   "note": "головка полупотайная — сверху линза, над поверхностью выступает"
  },
  {
   "std": "DIN 7991 / ISO 10642",
   "note": "потайной винт под шестигранник: головка крупнее (М6 — 12 мм против 11), нужна своя зенковка"
  }
 ],
 "compare": {
  "DIN_dk": {
   "1": 1.9,
   "1.2": 2.3,
   "1.4": 2.6,
   "1.6": 3,
   "2": 3.8,
   "2.5": 4.7,
   "3": 5.6,
   "3.5": 6.5,
   "4": 7.5,
   "5": 9.2,
   "6": 11,
   "8": 14.5,
   "10": 18,
   "12": 22,
   "14": 25,
   "16": 29,
   "18": 33,
   "20": 36
  },
  "DIN965_cross": {
   "1.6": "0",
   "2": "1",
   "2.5": "1",
   "3": "1",
   "3.5": "2",
   "4": "2",
   "5": "2",
   "6": "3",
   "8": "4",
   "10": "4"
  },
  "ISO_head_dk_k": {
   "1.6": [
    3.0,
    1.0
   ],
   "2": [
    3.8,
    1.2
   ],
   "2.5": [
    4.7,
    1.5
   ],
   "3": [
    5.5,
    1.65
   ],
   "3.5": [
    7.3,
    2.35
   ],
   "4": [
    8.4,
    2.7
   ],
   "5": [
    9.3,
    2.7
   ],
   "6": [
    11.3,
    3.3
   ],
   "8": [
    15.8,
    4.65
   ],
   "10": [
    18.3,
    5.0
   ]
  }
 }
}