PNC - Pierce nut
Sheet thickness:
0.6 - 2.5mm
Thread Sizes: M3 - M10
Strength class: 8 and 9
Features:
The square pierce nut for mid-range strength requirements, excellent price-performance ratio
Functional principle of the fastener
For the cost-effective use of pierce nuts in the production of sheet metal parts there is hardly a fastener more ideal then the PNC pierce nut. Depending on metal thickness the nut must have a pre-pressed boss.
Cost advantages exceeding 40 % compared with normal welding processes are a decisive argument in favor of this type of pierce nut. Key application areas, as seen by ARNOLD & SHINJO, are the electrical, the automotive, and the metal furniture industry.
To install the PNC pierce nuts, ARNOLD & SHINJO provides a modular tooling range. Punch heads, dies, feeding devices and the necessary control systems are part of the standard supply program.
Starting position
The nut is guided by the punching sleeve until the nut hits the sheet metal.
Press stroke
While moving down, the punch collar of the nut punches the hole in the sheet metal.
Punching process
The waste material from punching the hole falls through the center of die and the sheet metal is pressed into the undercuts of the nut.
Clinching process
The press is at BDC and the sheet metal is fully clinched into the undercut of the nut.
Sectional view of a finished joint
In order to punch and clinch the nut, you need the tools and feeding equipment for the PIAS® system.