BS-EN-148-1 › Respiratory protective devices: threads for facepieces. Standard thread connection
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Gaskets, External threads, Thread gauges, Safety devices, Thread pitch, Internal threads, Diameter, Plug gauges, Threaded components, Dimensional tolerances, Masks (protective clothing), Threads, Height, Radius, Dimensions, Breathing apparatus, Respirators
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BS EN 148-1:1999
July 15, 1999