ER4043 TIG Welding Rod, Aluminum, 3 32 in dia, 36 in L, 10 lb Tube no checkout Weld blending Arbor Diam [Nom] Weld blending Arbor Diam [Nom] 5 8 in to 11 Arbor Thread TPI or Pitch 5 8 in to 11 Big Catalog NO Body Material Phenolic Backing Brand ANCHOR BRAND Catalog MPI Catalog Construction Catalog NO Country of Origin US Dia and equipment widely used in HVAC applications Bonds to aluminum and many other metals Fills porosity in aluminum castings Can be machined drilled or tapped using conventional metalworking tools Qualifies under Mil Spec MIL PRF 24176C which result in improved fluidity (wetting action) of the weld pool Also produces a weld less sensitive to cracking Can be used to weld various grades of aluminum One of the oldest and most widely used welding and brazing alloys Contains silicon additives