Self-Clinching Fasteners come with paired wave washer.
November 7, 2008 -
Allowing attachment of 2 thin metal parts in applications requiring repeatable pivoting or hinging action, PEM® SpotFast® Fasteners permanently join 2 metal components to create flush-attachment connection without protrusions on either side. They can join dissimilar metals or sheets with different thicknesses and install in steel or aluminum sheets as thin as .031 in. with hardness of 80 or less on Rockwell B scale. RoHS-compliant units are available in various diameters and sizes.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
PennEngineering® (Penn Engineering)
P.O. Box 1000
Danboro, PA, 18916
USA
PEM® SpotFast® Fasteners with Paired Wave Washer Allow Consistent Pivoting of Two Metal Panels
New PEM® SpotFast® fasteners paired with a specially designed wave washer allow reliable attachment of two thin metal parts in applications additionally requiring repeatable pivoting or hinging action. These self-clinching fasteners (Type SFW) permanently join the two metal components to create a flush-attachment connection without protrusions on either side. The compatible wave washer delivers consistent torsion to promote repeatable hinging action while attachment remains secure.
The steel fasteners have zinc plating with integral lubricant to promote smoother operation. They can join dissimilar metals or sheets with different thicknesses and install in steel or aluminum sheets as thin as .031"/0.8mm with hardness of 80 or less on the Rockwell "B" scale.
Installation is easy by preparing a properly sized hole in both panels, installing the fastener in one panel, placing the wave washer over the installed fastener, and then situating the second panel over the fastener. Sufficient squeezing force permanently installs the fastener smooth with the top sheet and flush or sub-flush with the bottom sheet. The wave washer contributes consistent force for reliable rotation of the top sheet.
Unlike rivets that "bulb" during installation, the fastener's flush profile upon installation creates unobtrusive attachment requiring minimal space. A smooth surface is retained for finishing and fasteners can be concealed with paints or powder coatings for cosmetics.
Type SFW fasteners with wave washers are RoHS-compliant and available in various diameters and sizes. Detailed specifications (Bulletin SFW) and free part drawings (PEM CAD Library) can be accessed at www.pemnet.com
Contact Michael J. Rossi, PennEngineering®, 5190 Old Easton Road, Danboro, PA 18916-1000 USA. Phones: 800-237-4736 (toll-free in the U.S.) or 215-766-8853; Fax: 215-766-0143. Web site: www.pemnet.com
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