Image

Self-Clinching Captive-Panel Screws Eliminate Loose Parts

July 8, 2015
These PFC2 and PFS2 self-clinching captive-panel screws provide secure and permanent attachment for thin-metal assemblies.
Download this article in .PDF format
This file type includes high resolution graphics and schematics when applicable.

The PFC2 and PFS2 self-clinching captive-panel screws from PennEngineering, Danboro, Pa., provide secure and permanent attachment for thin-metal assemblies. The fasteners can also be removed and reused if someone needs to get access to a sealed panel. In addition, the screws and hardware eliminate typical issues and risks associated with handling, installing, and potential loosening of screws in service. The fasteners can be actuated easily by tool or hand.

These spring-loaded stainless screws work on aluminum or steel sheets as thin as 0.06 in. (1.53 mm) and have the appropriate hardness to “bite” into the metal. PFC2 screws made of stainless steel are appropriate for metal sheets with an HRB (Rockwell B hardness) of 70 or less and an HB (Brinell hardness) of 125 or less. PFS2 screws consist mainly of carbon steel and work on metal sheets with an HRB of 80 or less and a Brinell hardness of 150 or less. The screws are available in several screw lengths and in thread sizes #4-40 through ¼-20 and M3 through M6. In addition, both screw types can be supplied with a DuraBlack finish (black nitride) that increases wear and corrosion resistance, fatigue strength, and lubricity, while providing cosmetic appeal.

The fasteners install quickly and reliably by squeezing them into properly sized holes using standard equipment or the manufacturer’s Pemserter press to develop sufficient force. The force ensures the shoulder of the fastener’s retainer contacts the sheet material and that the fastener clinches permanently into place to become an integral part of an assembly.

Sponsored Recommendations

Customizable Piston Pumps: Key to Effective Shock Wave Therapy

March 26, 2025
Explore how customizable piston pumps are enhancing the effectiveness and precision of shock wave therapy for medical treatments.

Revolutionary Transparent Windows: KNF & nu glass Partnership

March 26, 2025
Learn how nu glass and KNF are transforming the industry with frequency-transparent windows, enabling groundbreaking advancements in communication and security applications.

How Automation Technology Increases Efficiency and Quality Using Vacuum Systems

March 26, 2025
See how cutting-edge vacuum technology is driving higher efficiency, precision, and quality in automated pick-and-place systems.

Semiconductor Industry: When Just Clean Isn't Clean Enough

March 26, 2025
Explore how advanced fluid transfer pumps are meeting the semiconductor industry’s stringent cleanliness and contamination-control requirements.

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!