PEM
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Self-clinching technology
A PennEngineering & Manufacturing Corp. (PEM® Fastening Systems) company was founded in 1942 to produce his own invention was a revolutionary new product: the self-clinching fastener. This easy-to-install fastening solution provides load-carrying threads in metal sheets too thin to be tapped.
Following industrial demands range of fasteners also widened. Today, nuts, threaded studs, standoffs and hundreds of fastening elements are offered for industries such as electronics, aerospace, automotive, machinery, agricultural machinery, furniture and telecommunications industry.
Biotek Kft started to distribute PEM® fasteners to self-clinch in 1994 and since then wide range of fasteners is offered from stock. In our showroom, our staff can demonstrate the operation, functions and advantages of PemSerter presses were developed to install PEM® fasteners. Feel free to contact us with questions about pressing process and special requirements.
Most of the fasteners are manufactured by PennEnginereeng Fastening Technologies are RoHS (2002/95/EU) compliant.
Parts are generally so-called self-clinching fasteners can be pressed into a ductile workpiece to cold-flow base material. Thanks to the shape design of self-clinching element during the installation base material cold-flows around each segments of the fastener resulting good strength against tensional and torsional loads occur. Main requirements of self-clinching process are fasteners always have to be harder than base material and sheet has to be ductile enough.
Advantages:
- Fewer parts required. Losable screws, nuts, washers, spring washers are no longer necessary to final assembly.
- Less assembly steps required. Fasteners are installed during part manufacturing to allow decreasing steps of final assembly.
- Final result is shorter assembly time. Fewer parts and less assembly steps causing shorter assembly time which reduce the operating prime cost.
Self-clinching fasteners
Self-clinching fasteners for sheet metals
The most widespread usage of PEM® fasteners is installing into metal sheets. For your application you can find the appropriate type of nuts, studs, standoffs, panel fasteners are made from different materials with different finishes.
General PEM® fasteners:
- self-clinching nuts
- nuts (S, SS, H, CLS, CLSS, SP)
- nut for thin sheet (SMPS)
- flush nut (F)
- self-locking nuts (LAS, LAC, SL, HNL, LK, LKS, LKA, PL, PLC, CFN)
- floating nuts (AS, AC, LAS, LAC, F10)
- blind nuts (B, BS)
- miniature nuts (FE, FEO, FEX, FEOX, U, UL)
self-clinching studs
- threaded studs (FH, FHA, FHS, FH4)
- threaded studs for thin sheet (TFH, TFHS)
- threaded studs for close-to-edge (FHL, FHLS)
- high-strength studs (HFH, HFHS, HFHB, HFE)
- concealed head threaded stud to blind hole (CHA, CHC, CFHA, CFHC)
self-clinching standoffs
- thru-hole threaded standoffs (SO, SOA, SOS, SO4)
- blind threaded standoffs (BSO, BSOA, BSOS, BSO4)
- standoffs for ultra thin sheets (TSO, TSOS, TSOA)
- standoffs for close-to-edge (DSO, DSOS)
- „Snap-Top” standoffs (SSA, SSC, SSS)
- concealed head standoffs to blind hole (CSS, CSOS)
- self-clinching pilot pins (TPS, TPS4)
self-clinching panel fasteners (PFHV, PF10, PFC2, PFS2, PFC2P, PFC4, PF11, PF11M, PF11PM, PF12, PF12M, PF30, PF31, PF32, PF50, PF60, SCB, SCBJ)
For technical details find pages of PEM® catalogue.
Self-clinching fasteners for stainless steel sheets
Contrary to the beliefs, self-clinching fasteners made from stainless steel material are not surely suitable for installing into stainless steel metal sheets. For these applications PEM® range contains heat-treated stainless steel self-clinching fasteners.
PEM® fasteners for stainless steel sheets:
- self-clinching nut (SP)
- self-clinching threaded stud (FH4)
- self-clinching pilot pin (TPS4)
- self-clinching panel fastener (PFC4)
- self-clinching standoffs (SO4, BSO4)
- self-clinching SpotFast fastener (SFP)
Broaching fasteners for P.C. boards
Developing electronics industry made a demand to new generation fasteners are suitable to be installed into non metallic base materials. As a result PEM® designed a fastener range can be set into plastic and/or P.C. boards.
PEM® fasteners for PCB sheets:
- broaching nuts (KF2, KFS2, KPS6)
- broaching threaded stud (KFH)
- broaching standoffs (KFE, KFSE, KFB3)
- broaching „Snap-Top” standoff (KSSB)
- ReelFast SMT standoffs (SMTSO)
- grounding standoffs (SOSG, SOAG)
- broaching panel fastener (PFK)
Special self-clinching fasteners
Besides fasteners for general fastening usage the PEM® innovations offer self-clinching fasteners for specific functions also.
PEM® fasteners for special functions:
- self-clinching „Keyhole” fasteners
- self-clinching plunger assembly, spring loaded (PTL2, PSL2)
- „R’Angle” right angle clinch fasteners (RAA, RAS)
- self-clinching SpotFast fasteners (SF, SFP, SFW)
- self-clinching cable tie mount hardware (TD, TDO)
- flare-in nuts (RHB, HHB, RMHB)
- projection weld nuts (WN, WNS)
For detailed geometric and required hole dimensions can be found in PEM® catalogue is available for download in PDF format from our website.
PEMSERTER® installation
PEMSERTER® presses have been developed to install PEM® self-clinching fasteners. Manual or automatic feed tooling sets are exist for almost all PEM® made fasteners to press in with which you can settle self-clinching parts effectively and constant high quality on PEMSERTER® presses. There are simple pneumatic press for manual feed, hydro-pneumatic and servo electromechanical presses for manual and automatic feed and fastener feeding system for in-die clinching so you can easily find the most suited to your company’s production volume from the range of installation equipments
PEMSERTER® Series 4 press
PEMSERTER® Series 4 is a pneumatic manual feed press with lockable storage cabinet-stand, resettable cycle counter, laser pointer, and with reliable integral point-of-operation safety system, 457mm throat depth and maximum 53.4 kN ram force which allow insertion into steel up to M10 fastener sizes, to softer material up to M12. Easy to use with minimal maintenance requirements features the press, so essential accessory for sheet metal worker companies produces in small- and medium serial.
Optionally available QX4 manual turret tool system allows installing 4 different types of fastener with one grab of workpiece.
Benefits:
- integral point-of-operation safety
- tooling exchange within 2 minutes
- 457mm throat depth
- parts tray holder
- 650 cycle/hour insertion (depending on operator and workpiece)
- QX4 manual turret tool system as option
- CE certificate
Specifications:
Ram force: max. 53.4kN
System type: pneumatic / lever
Air requirement: 6-7bar, 2,79 liter/ciklus
Height (on stand): 1676mm
Width: 660mm
Depth: 940mm
Weight (w. stand): 372kg
