Brass Cylinder Adaptor, From CGA 510 POL Acetylene To CGA 520 B Tank no checkout heat resistance and thermal conductivity Higher heat resistance and thermal conductivity Higher heat resistance than lava nozzles Most popular nozzle type in TIG welding Resist splatter build up Recommended for most welding operations except for use in confined areas [Nom] 5 in Face Type Spiral Hardness Grade Medium Hazmat NO Jan San Catalog NO Prop 65 NO Quarterly Flier NO Roughness Grade Medium Special Order NO Speed [Max] 10000 rpm Stock Status In Stock Thread TPI or Pitch 5 8 in 11 UNSPSC 31191500 Welding Catalog NO Wt Use a brass cylinder adaptor to connect a regulator to a cylinder or other equipment when different CGA threads on the mating parts make a direct connection impossible Adaptors should not be used as permanent installations