Floating Self-clinching Fasteners

A4-1108Floating Self-clinching FastenersFor installation into stainless steel sheetsNEW!Locking and Non-locking ThreadsThese fasteners provide load-bearingthreads in thin sheets as hard asRockwell B 88 / HB 183 and permit upto 0.76 mm adjustment for mating holemisalignment.The self-clinching featureoffers fast and simpleassembly. The fastenersare squeezed into properlysized holes using anystandard press. The sheet Self-lockingType LA4remains flush on one side,and the fastener is permanently clinchedin place. Uniformity of locking torque forType LA4 is equivalent to NASM25027specifications.Non-lockingType A4Features and Benefits Speeds assembly by compensating formating hole misalignment. Permanent installation into stainless steelsheets as thin as 0.97 mm and greater. Provides high torque-out and pushoutresistance in stainless panels. RoHS compliant.Installation1. Prepare properly sized mounting hole in sheet. Do notperform any secondary operations such as deburring.2. Place fastener into the anvil hole and place the mountinghole over the shank of the fastener.3. With the punch and anvil surfaces parallel, apply sufficientsqueezing force until flange contacts mounting sheet. Sketchat right shows suggested tooling for applying these forces.PUNCH1.37 mm±0.05 mmPerformance Data (1)METRICThreadCodeTest Sheet Material300 Series Stainless Steel Anvil PunchRetainer Retainer Part PartInstallationPushout Torque-out Number Number(kN)(N) (N•m)M3 40 890 9.6 8013889 975200048M4 53 890 9.6 8013891 975200048M5 57 1100 14.1 8013892 975200048(1) Performance values reported are averages when all installationspecifications and procedures are followed. Variations inmounting hole size, sheet material and installation force will affectthis data. Performance testing of this product in your applicationis recommended. We will be happy to provide samples for thispurpose.8 mm Min.ANVILD+0.05 mm+0.13 mmE+0.1 mmwww.pemnet.com

ENON-LOCKINGType A4AT 1D CThreaded TopElliptically FormedESELF-LOCKINGType LA4T 2ADCFloat – 0.38 mm minimum, in all directions from center, 0.76 mm total.Single groove identifies product forinstallation into stainless steel sheets.All dimensions are in millimeters.METRICType Hole Min. Dist.Thread Thread Shank A Min. Size in C D E T 1T 2HoleSize x Non-Locking Self-Locking Code Code (Shank) Sheet Sheet Max. Max. ± 0.38 Max. Max. C/L ToPitch Max. Thickness + 0.08 EdgeM3 x 0.5 A4 LA4 M3 1 0.97 0.97 7.37 7.35 7.37 9.14 3.31 4.83 7.62M4 x 0.7 A4 LA4 M4 1 0.97 0.97 9.35 9.33 9.28 11.18 3.31 5.34 8.64M5 x 0.8 A4 LA4 M5 1 0.97 0.97 10.31 10.29 10.29 11.94 4.32 6.86 9.14Material & Finish SpecificationsFastener Materials Standard Finishes For UseInThreads Retainer Nut Retainer Nut Nut (1)Passivated Passivated SheetNon-locking, Self-locking, 400 Series 300 Series and/or and/or HardnessInternal Internal Stainless Stainless tested per tested per Black HRB 88 /ANSI/ASME ANSI/ASME Steel Steel ASTM ASTM Dry-film HB 183Type B1.13M, 6H B1.13M, 6H A380 A380 Lubricant or LessA4 • • • • • •LA4 • • • • • •Part number codes for finishes None None MD(1) HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.Part Number DesignationLA4 – M3 – 1 MDType &MaterialThreadCodeShankCodeFinish(If applicable)Double squares are a registered trademarkAlways look for the square insert in a squareretainer to be sure you are getting PEM brandfasteners and the best in self-clinching performance.®Bottom view (same for both type fasteners).RoHS compliance information can be found on our website.© 2008 PennEngineering.Specifications subject to change without notice.Check our website for the most current version of this bulletin.