CL™
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Catalog excerpts

PEM® brand self-clinching nuts install permanently in aluminum, steel or stainless steel sheets.

Self-clinching nuts are installed by placing them in properly sized holes in sheets and applying a parallel squeezing force to the head of the nut. The sheet metal surrounding the head cold flows into an undercut thereby making the fastener an integral part of the sheet. A serrated clinching ring prevents the fastener from rotating after installation. S™/SS™/CLA™/CLS™/CLSS™ nuts provide load-bearing threads in thin sheets with high pushout and torque-out resistance - PAGES 4 and 5 SP™, PEM 300® nuts provide strong load-bearing threads in stainless steel sheets as thin as .03070.8 mm -PAGES...

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Describes "best practice" for typical applications. Fasteners can be used in other panel materials not listed here if specified hardness limits are met. In all cases "For Use in Sheet Hardness" information is shown in chart on page 9. AVAILABLE PEM® VARIMOUNT® FASTENING SYSTEM The PEM® VariMount® fastening system (see PEM® Bulletin VM) utilizes a self-clinching nut paired with a round steel or stainless steel base plate to offer a clean and ready-made assembly for mounting into any rigid material or panel, including composites, plastics, and metals. Multiple radial holes in the base plate...

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PART NUMBER DESIGNATION S - 632 - 1 Z Type Material Thread Shank Finish Code Size Code Code • S/SS nuts are recommended for use in steel or aluminum sheets HRB 80 / HB 150 or less. • CLS/CLSS nuts are recommended for use in steel or aluminum sheets HRB 70 / HB 125 or less. • SP nuts are recommended for use in stainless steel sheets HRB 90 / HB 192 or less. • CLA nuts are recommended for use in steel or aluminum sheets HRB 50 / HB 82 or less. S™/SS™/CLS™/CLSS™/SP™ NUTS All dimensions are in inches. (1) For maximum performance, we recommend that you use the maximum shank length for your sheet...

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SELF-CLINCHING NUTS S™/SS™/CLS™/CLSS™/SP™ NUTS (See drawing at top of page 4) All dimensions are in millimeters. CLA™ NUTS (See drawing at top of page 4) All dimensions are in inches. Type A Min. Sheet Fastener Thread Material Thread Shank (Shank) Thickness Size Aluminum Code Code Max. (1) Hole Size In Sheet C E T ±.003 -.000 Max. ±.010 ±.010 Min. Dist. Hole CL To Edge (See drawing at top of page 4) All dimensions are in millimeters. Type Thread A Min. Sheet Fastener Size x Material Thread Shank (Shank) Thickness Pitch Aluminum Code Code Max. (1) Hole Size In Sheet C E T +0.08 Max. ±0.25...

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PEM RT® FREE-RUNNING LOCKNUTSFree-running locking feature allows screw to turn freely until clamp load is applied. If the tightening force is removed, these nuts no longer provide any torsional resistance to rotation until clamp load is reapplied. PEM RT® Stamp (Registered Trademark) PART NUMBER DESIGNATION S - RT632 - 1 Z1 II II Type Thread Shank Finish Size Code Code PEM RT® free-running locking feature can be added to other PEM® internally threaded nuts. • Resistant to vibrational loosening. • Back side of panel is flush or sub-flush for screw installation. • Locking feature reusability...

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Prevailing torque locking feature produces friction between threads of mated components thereby increasing the force needed to tighten as well as loosen the nut. Prevailing torque locknuts provide essentially the same torque value regardless of the amount axial load applied. • 3 cycle locking performance, (1) • Resistant to vibrational loosening, • Back side of panel is flush or sub-flush for screw installation, • Uses same mounting hole and installation tooling as standard S™ nuts, • Recommended for use in sheets HRB 80 / HB 150 or less, PART NUMBER DESIGNATION S L - 632 - 1 Z[ Type...

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• Meets prevailing torque requirements for IFI 100/107 Grade B (unified) and ANSI B18.16.1M (metric) locknuts. • H nut is recommended for use in sheets HRB 80 / HB 150 or less. • HNL nut is recommended for use in sheets HRB 60 / HB 107 or less. All dimensions are in inches. PART NUMBER DESIGNATION H - 0616 ZIH N L - 0616 LZ Type Not Locking Thread Finish Heat- Size Code Clinching profile may vary. (1) For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.

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PART NUMBER DESIGNATION SMPS - 440 SMPP - 440 Type Thread Size Code • Installs into sheets as thin as .025"/ 0.64 mm. • Reduced outer dimensions and thinner sheet capabilities compared to Type S/SP thread sizes. • SMPS nut is recommended for use in sheets HRB 70 / HB 125 or less. • SMPP nut is recommended for use in stainless steel sheets HRB 90 / HB 192 or less. (1) Special order with additional charge. (2) Part numbers for aluminum nuts have no plating suffix. (3) Unplated threads are sized to accept a basic go gauge after .00025“ / 0.0064 mm plating. (4) See PEM® Technical Support...

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1. Prepare properly sized mounting hole in sheet. Do not perform any secondary operations such as deburring. 2. Place fastener into the anvil hole and place the mounting hole (preferably the punch side) over the shank of the fastener as shown in diagram to the right. 3. With installation punch and anvil surfaces parallel, apply squeezing force until the head of the nut comes into contact with the sheet material. COUNTERBORE ANVIL PROTRUSION ANVIL <'> Thread Sizes #2-56 to 5/16 CLS/S/SL/S-RT Thread Sizes 3/8, 7/16, 1/2, M10 and M12 and M2 to M8 H/HNL Thread Sizes 5/16, 3/8, M8 and M10 Thread...

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1. Prepare properly sized mounting hole in sheet. Do not perform any secondary operations such as deburring. 2. Place fastener into the recommended counterbore anvil hole and place the mounting hole (preferably the punch side) over the shank of the fastener as shown in diagram. 3. With installation punch and anvil surfaces parallel, apply squeezing force until the head of the nut comes into contact with the sheet material. SP™ NUTS Thread Code SMPP™ NUTS METRIC COUNTERBORE ANVIL PROTRUSION ANVIL Thread Sizes 1/4-20 to 5/16 and M5 to M8 Thread Sizes 3/8 and M10 (1) Large nut anvils use...

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