40 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o
The following tables list the available Thread characteristics
provided by the Thread Size function on each model. Note that
Model 4087 has two separate listings, one for Internal Threads
and one for External Threads. The listing shown within
the Thread Size function is determined by the set Thread
Classication (see Thread Classication section).
Model 4086 (Internal Thread)
Thread Size
Cut Tap Drill Size*
Thread OD (Minimum Major Diameter)
Model 4087 (Internal Thread)
Thread Size Minimum Pitch Diameter
Cut Tap Drill Size* Maximum Pitch Diameter
Roll Tap Drill Size* Minimum Minor Diameter
Close Fit Drill Size* Maximum Minor Diameter
Free Fit Drill Size* Minimum Major Diameter
* If the resulting hole size is greater than 2 Inches or 50 mm, the actual
hole size will be displayed instead of adjusting to the closest Drill Size.
Model 4087 (External Thread)
Thread Size Minimum Pitch Diameter
Cut Rod Size Maximum Major Diameter
Roll Shank Size Minimum Major Diameter
Maximum Pitch Diameter Maximum Minor Diameter
Numeric Thread Size – Model 4086
Enter a # 8 screw and toggle through the available common
Thread per Inch (TPI) values, store the selected Thread Size and
toggle through the available Thread characteristics:
(cont'd)
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