Self-Clinching Pins - Series CH, CHN, CHS, CHA
Self clinching flush head pins offer an excellent solution that provide a captivated unthreaded pin in panels as thin as .040” / 1mm thick. The CH,CHN, CHS, and CHA Series of unthreaded pins provide a cosmetically appealing flush mount where the head of the fastener is embedded into the panel into which it is installed. After installation the self clinching pin is captivated in the panel and can be used in a variety of alignment and positioning requirements in the design. The fasteners provide a low cost of installation and are easily installed using a press that supplies the squeezing force required to properly seat the fastener. The proper hole size and minimum sheet thickness needed for proper installation are clearly indicated in our catalog in the Dimensions & Specifications section.
Requirements for the Successful Installation of Self Clinching Flush Head Pins:
When installing the CH unthreaded steel pins into steel or aluminum panels the fasteners must be harder than the metal into which the fastener will be installed. For example a CH pin can be installed into steel or aluminum panels with a maximum hardness of HRB 80. The CHN series guide pins are made with non heat treated steel can be installed into steel or aluminum panels with a maximum hardness of HRB 50 or less. The CHS pins can be installed into steel or aluminum panels with a maximum hardness of HRB 70 and the CHA pins can be installed into panels with a max hardness of HRB 50. This information is readily available within our website.
The proper hole size is necessary to insure the optimum push out values when installing flush head self clinching pins. For example when installing a Captive Fastener CH223-8 (.223" by ½") steel flush head pin in a steel panel the hole size in the mating panel should be .250" +.003" -.000".
The self clinching pins are available in inch and metric sizes and they are RoHS and REACH compliant. If 2D or 3D prints are required they can be downloaded from our catalog.