Dies for making thread-forming screw with step taper

Details Dies for making thread-forming screw with step taper Dies for making thread-forming screw with step taper

B - Operations, Transporting

21

H

10/37

B21H 3/02 (2006.01) F16B 25/00 (2006.01)

Patent

CA 1124964

DIES FOR MAKING THREAD-FORMING SCREW WITH STEP TAPER Abstract of the Disclosure A die couple is provided for making a thread-forming screw with a short, shallow angle step taper to provide a shal- low entry angle into the work piece hole. Each die comprises a first die section for forming the holding section of the screw, a second die section for forming the step taper, and a third die section for forming a point with a relatively steep angle.

370133

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