AC-M4-2 PEM

PEM floating self-clinching fasteners are available with or without locking threads. ALA FLOATING SELF-CLINCHING FASTENERSFLOATING SELF-CLINCHING FASTENERS Locking and Non-locking Threads Provide load-bearing threads in thin sheets Permit a total of .030/0.76 mm adjustment for mating hole misalignment. Sheet remains flush on one side, and the fastener is permanently locked in place. Threads of the floating nut extend into the retainer shank for extra strength and support in assembly. AC/AS/LAC/LAS floating Nuts LAC/LAS AC/AS Designed for clinching into steel or aluminum panels and sheets. Available with (LAC/LAS) or without (AC/AS) locking threads. LA4 A4 A4/LA4 floating nuts Provide prevailing torque locking threads with performance equivalent to applicable (1) NASM25027 specifications . Designed for clinching into stainless steel panels and sheets. Available with (LA4) or without (A4) locking threads. (1) To meet national aerospace standards and to obtain testing documentation, product must be ordered to US NASM45938/11 specifications. Check our web site for a complete Military Specification and National Aerospace Standards Reference Guide (Bulletin NASM). Screws for use with PEM self-clinching locking fasteners should be Class 3A/4h fit or no smaller than Class 2A/6g. NON-LOCKING AS, AC, A4 Nuts PART NUMBER DESIGNATION A C 440 1 A S 440 1 ZI A 4 440 1 LA C 440 1 MD Threads Extend into Retainer Shank LA S 440 1 MD No Protrusion Positive Stop LA 4 440 1 MD Type Retainer Thread Shank Finish Material Size Code Code Code Code SELF-LOCKING LAS, LAC, LA4 Nuts PEM Double Squares (Registered Trademark) PEM Single groove (Registered Trademark) Identifies product for installation into stainless steel sheets (A4 and LA4) ALA-2 PennEngineering www.pemnet.com