Sheet metal screw

Details Sheet metal screw Sheet metal screw

F - Mech Eng,Light,Heat,Weapons

16

B

85/106

F16B 25/02 (2006.01) F16B 25/00 (2006.01) F16B 35/04 (2006.01) F16B 39/28 (2006.01) F16B 39/30 (2006.01)

Patent

CA 1184053

Abstract A sheet metal screw providing increased strip torque. A helical ramp is formed as an extension to the thread and is partially surrounded by a recess in the lower surface of the head. The material of the tapping panel is drawing upwardly through the clearance hole in the bearing panel into engagement with the helical ramp. The farther up the surface of the ramp the material of the tapping panel is drawn, the greater the magnitude of the stripping torque.

402097

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