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Bottle Threads



MM T R 400H 410H 415H S I THDS
PER
INCH
　 MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MIN 　
13 0.514 0.502 0.454 0.442 　 　 　 　 0.467 0.437 0.052 0.022 0.218 12
15 0.581 0.569 0.521 0.509 　 　 　 　 0.572 0.542 0.052 0.022 0.258 12
18 0.704 0.688 0.62 0.604 0.386 0.356 0.538 0.508 0.632 0.602 0.052 0.022 0.325 8
20 0.783 0.767 0.699 0.683 0.386 0.356 0.569 0.539 0.757 0.727 0.052 0.022 0.404 8
22 0.862 0.846 0.778 0.762 0.386 0.356 0.6 0.57 0.852 0.822 0.052 0.022 0.483 8
24 0.94 0.924 0.856 0.84 0.415 0.385 0.661 0.631 0.972 0.942 0.061 0.031 0.516 8
28 1.088 1.068 0.994 0.974 0.415 0.385 0.723 0.693 1.097 1.067 0.061 0.031 0.614 6
30 1.127 1.107 1.033 1.013 0.418 0.388 　 　 　 　 0.061 0.031 0.653 6
33 1.265 1.241 1.171 1.147 0.418 0.388 　 　 　 　 0.061 0.031 0.791 6
35 1.364 1.34 1.27 1.246 0.418 0.388 　 　 　 　 0.061 0.031 0.875 6
38 1.476 1.452 1.382 1.358 0.418 0.388 　 　 　 　 0.061 0.031 0.987 6
40 1.58 1.55 1.486 1.465 0.418 0.388 　 　 　 　 0.061 0.031 1.091 6
43 1.654 1.624 1.56 1.53 0.418 0.388 　 　 　 　 0.061 0.031 1.165 6
45 1.74 1.71 1.646 1.616 0.418 0.388 　 　 　 　 0.061 0.031 1.251 6
48 1.87 1.84 1.776 1.746 0.418 0.388 　 　 　 　 0.061 0.031 1.381 6
51 1.968 1.933 1.874 1.839 0.423 0.393 　 　 　 　 0.061 0.031 1.479 6
53 2.067 2.032 1.973 1.938 0.423 0.393 　 　 　 　 0.061 0.031 1.578 6
58 2.224 2.189 2.13 2.095 0.423 0.393 　 　 　 　 0.061 0.031 1.735 6
60 2.342 2.307 2.248 2.213 0.423 0.393 　 　 　 　 0.061 0.031 1.853 6
63 2.461 2.426 2.367 2.332 0.423 0.393 　 　 　 　 0.061 0.031 1.972 6
66 2.579 1.107 2.485 2.45 0.423 0.393 　 　 　 　 0.061 0.031 2.09 6
70 2.736 2.701 2.642 2.607 0.423 0.393 　 　 　 　 0.061 0.031 2.247 6
75 2.913 2.878 2.819 2.784 0.423 0.393 　 　 　 　 0.061 0.031 2.424 6
77 3.035 3 2.914 2.906 0.502 0.472 　 　 　 　 0.075 0.045 2.546 6
83 3.268 3.233 3.148 3.113 0.502 0.472 　 　 　 　 0.075 0.045 2.753 5
89 3.511 3.476 3.391 3.356 0.55 0.52 　 　 　 　 0.075 0.045 2.918 5
100 3.937 3.902 3.817 3.782 0.612 0.582 　 　 　 　 0.075 0.045 3.344 5
110 4.331 4.296 4.211 4.176 0.612 0.582 　 　 　 　 0.075 0.045 3.737 5
120 4.724 4.689 4.604 4.569 0.7 0.67 　 　 　 　 0.075 0.045 4.131 5

 

Cap and Neck Finishes

Screw thread cap sizes are generally expressed as two numbers. The first number refers to the cap diameter (in millimeters) and the corresponding Glass Packaging Institute (GPI)/Society of the Plastics Industry (SPI) finish diameter.

  The second number refers to the height and thread configuration of the closure or finish. Below is a selection of commonly used caps and finishes.

　

S=Thread Start

H=Finish Height

T=Major Diameter

E=Minor Diameter

I=Hole Diameter

T - Outside diameter of the continuous thread

E - Outside diameter of the finish shaft excluding thread

I - The inside diameter of the finish at the smallest possible point

S - The distance between the top of the finish to the top of the thread

L - The distance between the top of the finish to the top of the transfer bead   (optional)

H - Height from the top of the finish to the bottom where it intersects with the shoulder

W - The thickness of the transfer bead (optional)

 Standard Plastic Finishes Most Commonly Used...

The diameter of Closures

Standard Neck Finishes

( 1 turn of thread)

（1圈螺牙）

( 1.5 turn of thread)

（1.5圈螺牙）

（高位2圈螺牙）

(Tall 2 turns thread)

(Short 2 turns thread)

（低位2圈螺牙）

  Plastic Thread Forms...

Plastic thread form finishes typically have a standard "M" style thread form, shown here. An "L" style can also be used but is not as common. The root dimension will vary depending on the threads per inch of the finish. Special thread forms can also be designed.

Recommended Application Torque 

(Inch / Pounds)

Cap Size

Glass

Plastic

20

8-12

10-12

24

10-15

12-15

28

11-17

13-17

33

13-20

16-20

38

15-23

19-23

43

17-26

21-26

45

18-28

23-28

48

19-29

24-29

53

21-32

27-32

58

23-35

29-35

63

25-38

31-38

70

28-42

35-42

89

26-53

44-53

100

40-60

48-60

110

45-65

55-65

120

48-72

60-72