Techtran Electronics (India) Pvt. Ltd. Kolkata, West Bengal

These standoffs, which use the proven self-clinching design, install with a squeeze in punched or drilled round holes - and become permanently mounted in the thin sheet.

PEMbrand thru-hole threaded standoffsare installed with their heads flush with one surface of the mounting sheet. When blind-threaded types are used, outer sheet surfaces are not only flush, but closed as well. Unthreaded standoffs are also available for spacing multi-panel assemblies.

Types S04 and BSO4 standoffs are for installation into stainless steel sheets as thin as .040" / 1.02 mm. Types TSO, TSOS, and TSOA self-clinching threaded standoffs provide permanent threads in sheets as thin as .025" / 0.63 mm.

PEM self-clinching standoffs are also available on special order in non-heat treated carbon steel as type SON (thru-hole threaded) or BSON (blind threaded).

Types DSO and DSOS standoffs are available for close-to-edge applications. If you require a standoff which we do not offer in this bulletin, please contact us. We will be happy to work with you to satisfy your special need.

• Bulletin CHPEM Concealed-head Standoffs.
• Bulletin KPEM Standoffs for printed circuit boards.
• Bulletin SKPEM KEYHOLE Standoffs.
• Bulletin SMTPEMReeIFast SMT Spacers/Nuts.
• Bulletin SSAPEMbrand SNAP-TOPStandoffs.

PEM heavy duty self-clinching studs are typically used when high torque out and pushout and, if necessary, high tensile/shear strength are required. These studs are easy to install, have a low installed cost, and have consistent performance characteristics.

• Head strength is adequate to develop full thread strength
• Specially heat-treated for greater tensile and shear strength
• Large head diameter reduces compressive stress on panel
• Can be used in material as thin as .036" / .91 mm
• Easy to install. No welding
• Can be installed with automated equipment
• RoHS compliant materials and finishes
• Installs into panels up to HRB 85 / HB 165

• Thread Strength: Grade 5 through 8 and property class 8.8 to 10.9
• Assorted head and clinch styles:

• Thread types and sizes:

Thread sizes up to 1/2" and M14

Available with dog point

Available with MAThread"'/MATpoint anti cross-threading feature (1)

• Lengths: Up to 6" and 152mm
• Materials: Carbon steel & Alloy steel
• Finishes: - Zinc (black, yellow, clear), Nickel, Black Oxide, Waxing, Geomet', Phosphate, and other specified (2)

PEM Type HFG8" and HF109T"' studs are manufactured for the most demanding applications from medium carbon alloy steel, then heat-treated to high strengthand hardness qualities.

• High tensile strength
• Recommended for use in carbon steel or HSLA steel sheets HRB 89 or less on the Rockwell "B" scale
• Large head diameter reduces compressive stress on panel

For over 60 years, PEM brand self-clinching fasteners have satisfied production and fastening requirements wherever load-bearing threads are required in thin metal sections too thin to tap.

Installation of PEM brand self-clinching nuts is simple, quick, and convenient. Just insert them in punched or drilled holes, then apply a squeezing force to embed the clinching ring completely in the sheet metal.

The clinching ring locks the displaced metal behind the tapered shank, ensuring high pushout resistance. High torque-out resistance is ensured when the knurled platform is embedded in the sheet metal.

Proper installation forces will not distort or damage the threads in PEM nuts because the recommended shank length is always less than the minimum sheet thickness.

All clinching takes place on the fastener side of the sheet. The reverse side remains flush and smooth.

These locknuts (Type SL^TM) are designed with a unique and economical TRI-DENTlocking feature, which meets demanding locking performance requirements.

These nuts (Type SMPS^TM) feature a lower profile and can be mounted closer to the edge of a sheet than standard self-clinching nuts.

PEM 300 self-clinching nuts (Type SP^TM) are especially designed for permanent installation into stainless steel sheets as thin as .030"/ 0.8 mm.

Machined from a specialty stainless steel, these fasteners are then heat-treated to a hardness higher than most 300 Series stainless steels. This feature enables PEM 300 fasteners to be installed into stainless steel sheets, employing the same self-clinching principle which has proved successful over the years in thousands of applications.

FH (flush-head) Studs are installed by placing them in punched or drilled holes in the sheets and squeezing into place with any standard press. The squeezing action embeds the head of the stud into the sheet. The metal displaced by the head flows smoothly and evenly around the ribs and into the annular groove - creating a flush-head assembly and securely locking the stud into the sheet with high torque-out and pushout resistances. Also available unthreaded on special order.

TFH (non-flush) Studs are for sheets as thin as .020 inches / 0.51 mm. They may also be used in thicker sheets where flush head studs are not required. TFH studs are installed in the sheets in the same manner as flush-head studs; however, different punches and anvils are required. When installed, the TFH stud will be securely locked into the thin sheet with ample torque-out and pushout resistances. The stud head will not be flush but will project above the sheet surface approximately .025 in. / 0.64 mm.

HFH (high-strength) Studsreplace weld studs with easier installation at lower costs. The large stud head which projects above the sheet material distributes the axial tightening force over a large area thereby improving pull through resistance.

HFHB (BUBAR) Studs are ideal for applications which demand superior electrical/mechanical attachment points. Phosphor bronze studs offer twice the conductivity of carbon steel studs.

FHL (low-displacement head) Studs install closer to the edge of a sheet than standard studs without causing that edge to bulge. Depending on thread size, Type FHL studs can be installed from 25% to 50% closer to the edge of a sheet than standard self-clinching studs.

FH4 & FHP (flush-head) Studs for Sterols Steel are designed to provide strong threads in stainless steel sheets as thin as .040" / 1 mm. Type FHP studs have high corrosion resistance. Both types are designed for use in stainless steel sheets with a hardness of 92 or less on the Rockwell "B" scale.

TPS (flush-head) Pilot Pins satisfy a wide range of positioning, pivot, and alignment applications. The chamfered end makes mating hole location easy.

HFE (high-strength) Studs are designed with an enlarged head diameter to provide high-strength in sheets as thin as .040" / 1 mm.

Dog Point and Anti Cross-Thread Options.

PEMweld nuts (Types WN/WNS) provide load-bearing threads in metal sheets too thin to tap, and permit faster assembly.

PEM brand weld nuts overcome many problems associated with other weld nuts - burn-outs, complicated electrodes and pilots, tedious time-consuming indexing and re-tapping to remove weld spatter. Their design, based on the experience of hundreds of users of weld nuts, speeds production using standard equipment, thereby reducing labor costs.

PEM stainless steel weld nuts offer the added advantages of resisting corrosion and being essentially non-magnetic. You may specify steel or stainless steel for your requirements and be sure you are getting the weld nuts that are easiest to install.

A variety of welding equipment is suitable for installation of PEM weld nuts. Best results have been obtained with a 50KVA press-type, spot-welding machine whose upper welding head moves vertically in a straight line with the lower electrode. Flat-faced electrodes with tip diameters .125" / 3.2 mm larger than the "E" dimension of the PEM weld nut should be used.