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Machine Tap
UNC 1/4 x 20 DIN 371

Product information

Some of our fixtures, such as the clamps from BENCHCRAFTED, require, when installed according to the instructions, thread cutters with American coarse threads. In terms of nominal size, the first number refers to the diameter in inches (e.g., 1/4 = 6.35 mm) and the second number refers to the number of threads per inch (e.g., 20 = 20 threads per inch).

Properties
k5.5 mm
L80 mm
Nominal Size1/4 × 20
Recommended Pilot Hole Diameter5.2 mm
Applicationfor through holes
DINDIN 371
ThreadRight-hand thread
ManufacturerH.T.D, Japan
MaterialHSS
Shankthicker than the thread core diameter
Work Materialsfor easily machinable materials up to 900 N/mm²

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