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Cast Stainless

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  • Threaded Cast Stainless Plugs are available in grades 304 and 316.
  • Stocked in sizes from 1/8" to 4".
  • Cast Stainless Threaded Plugs are available with both square and hex heads.

Five different threaded cast stainless plugs with different square and hex heads.
Sizes are Nominal Pipe Size (NPS) - size chart
Two different Threaded Cast Stainless Plugs.

To start, select size. Follow the green box to refine selections as desired. Click “Lookup Product” any time after selecting size to display products matching criteria entered so far. Fields autofill when only one choice. Or use search box above.


Domestic - Made in the USA.

Import - Made elsewhere.


Class for pipe fittings is a standard defined by the ASME/ASTM. Though stated with a # sign, such as 150# or 3000#, it is not a direct pressure rating.  The pressure rating is dependent on material and temperature and is found by consulting an appropriate reference guide.

XH relates to pipe wall thickness according to standard chart for given pipe diameter.

bar means the item is made from solid bar stock and can be used for ratings up to and including class 6000#.


Threaded - standard exposed head.

Threaded by Socket - hex socket used to turn plug.


Hex, Round, or Square head.


Grade of Stainless

304 or 316

304L or 316L (low carbon)