An expansion or well nut consists of a flanged neoprene bushing with a threaded nut embedded in the non flanged end. It is used in blind bolt holes to fasten a piece and seal the bolt hole. The nut is inserted into the hole ...

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An expansion or well nut consists of a flanged neoprene bushing with a threaded nut embedded in the non flanged end. It is used in blind bolt holes to fasten a piece and seal the bolt hole. The nut is inserted into the hole flange side up, as the bolt is screwed into the nut the rubber on the other side of the hole expands and seals the bolt hole.

  • Used to seal bolt holes to prevent leaking
  • Can be used in blind & closed-end holes
  • Included variants range from #6-32 to 3/8"-16 in fine & coarse thread sizes
  • Made of high-strength rubber & steel parts
  • Corrosion resistance
  • Used to seal bolt holes to prevent leaking
  • Can be used in blind & closed-end holes
  • Included variants range from #6-32 to 3/8"-16 in fine & coarse thread sizes
  • Made of high-strength rubber & steel parts
  • Corrosion resistance

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