Обозначение размера резьбы

Шаг резьбы, мм

Число ниток на дюйм

Диаметры резьбы

Ряд 1

Ряд 2

d=D

d₂=D₂

d₁=D₁

1/16"

0,907

28

7,723

7,142

6,561

1/8"

9,728

9,147

8,566

1/4"

1,337

19

13,157

12,301

11,445

3/8"

16,662

15,806

14,950

1/2"

1,814

14

20,955

19,793

18,631

5/8"

22,911

20,749

20,587

3/4"

26,441

25,279

24,117

7/8"

30,201

29,0З9

27,877

1"

2,309

11

33,249

31,770

30,291

1⅛"

37,891

36,418

34,939

1¼"

41,910

40,431

38,952

1⅜"

44,323

42,844

41,365

1½"

47,803

46,324

44,845

1¾"

53,746

52,267

50,788

2"

59,614

58,135

56,656

2¼"

65,710

64,231

62,762

2½"

75,184

73,705

72,226

2¾"

81,534

80,055

78,576

3"

87,884

86,405

84,926

3¼"

93,980

92,501

91,022

3½"

100,330

98,851

97,372

3¾"

106,680

105,201

103,722

4"

113,030

111,551

110,072

4½"

125,730

124,251

122,772

5"

138,430

136,951

135,472

5½"

151,130

148,651

148,172

6"

163,830

162,351

160,872