Tandem Style ACME Tap Application
Tandem Acme taps combine an initial roughing cut with a final finishing cut, in one pass.
The roughing section of the tap has a thread with a sharper angle which permits threads to be relieved more effectively and eliminates the wide, flat Acme crest. This results in free-cutting characteristics which makes greater stock removal possible.
The last few threads on the roughing section act as a guide for the short finishing section, which corrects the angles andmore

Unit of Measure

Material

Ground thread/high speed steel

Type

Right Hand Taps

Size and Threads Per Inch

1 1/2-4

Overall Length (A)

12 5/8 in

Thread Length (B)

5 7/8 in

Square Length (C)

1 1/4 in

Shank Diameter (D)

1.233 in

Size of Square (E)

0.925 in

Max. Depth of Nut (Bronze and Steel)

3 in

Max. Depth of Nut (Brass and Cast Iron)

4 1/2 in

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