HAHIYO Hahiyo 116 Inches NPT Hex Socket Plug Smooth Threads Seal Tight Allen Head 304 Stainless Steel Pipe Fitting Bright Finish Multi Function 5 Pieces for Motor Drainage Hole Water Line Empty Ports

Good sealSmooth threads and very well madeYou can use a few of these as drain hole plug with no problemsyou can also use them with either teflon tape or thread sealing compoundwont over tighten them and help them bite even betterThese would be good for low or no pressure applications Clean finishHigh qualitygood finish with no burrs or sharp edgesIf you need to fill small holes in a intake manifold after removing a rod and sensorthese can be use to plug empty ports on an intake manifold for a clean lookWorking with ease and fit perfectly under an extremely tight area to apply as drainage plug to motor Easy tightenEasy to install and removeUse to plug showertub water lines for pressure testing the sweated connectionsPlugs will not leak and are easy to remove without damaging the threadsYou can trust them holding up on your air tank for months Quality stainless steelStainless steel is good for anytime the plug comes in contact with waterTop quality stainless steel for adding more durability and meticulous machining of the threaded end and the hex key insetUse thme with confidence MultiFunctionThese hex socket plugs are use on pipes and fittingssealing a connection for fitting and pipes that carry gasses or liquidConnectors for fuel filtergas delayersfuel tanksbreak lineairlineetcThese could also work for pipeswaternatural gas that are found in your home.