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Thread Dial chart
the thread dial chart is located on the apron, as
shown in figure 90.
(5/06/13)
figure 90. thread dial chart location.
Find the tpi (threads per inch) that you want to
cut in the left column on the thread dial chart (see
figure 91), then reference the dial number to the
right. the dial numbers indicate when to engage
the half nut for a specific thread pitch as indicated
by the thread dial.
4,8,12,16,20,24,
28,32,40,48,56
2,6,10,14,18,22,
26,36,42,46,52,
54
1,3,5,7,9,11,13,
19,21,23,27,38,
44
1½,2½,3½,4½,
5½,6½,9½,10½,
11½,13½
1¼,1¾,2¼,2¾,
3¼,4¾,5¼,5¾,
6¾
figure 91. thread dial chart.
Model G0746/G0749 (Mfg. Since 3/13)
thread dial
Chart
In.
Any
Position
Non-
Numbered
Position
Numbered
Position
1,2,3,4
Position
1,3 or 2,4
Position
1 Only
The following examples explain how to use
the thread dial and the thread dial chart.
Tpi Divisible by 4: Use any line on the thread dial
(see example in figure 92).
TPI
4,8,12,16,20,24,
28,32,40,48,56
• Label is actual size
figure 92. any position on dial for threading tpi
• Label must be made of
oil-resistant material
Even Tpi Divisible by 2: Use any non-numbered
line on the thread dial (see example in figure 93).
TPI
2,6,10,14,18,22,
26,36,42,46,52,
54
figure 93. Example of an inch thread pitch
Odd Numbered Tpi & Even Tpi Not Divisible
by 8: Use any of the numbered lines on the thread
dial (see example in figure 94).
TPI
1,3,5,7,9,11,13,
19,21,23,27,38,
44
figure 94. Example of an odd numbered inch
Dial Number
Thread Dial
Any
3
Position
1
divisible by 4.
Thread Dial
Dial Number
3
Non-
Numbered
1
Position
divisible by 2.
Dial Number
Thread Dial
Numbered
3
Position
1
1,2,3,4
thread pitch.
-59-
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