Appleton ST 300 ST Series straight liquid tight connector W/plain throat conduit size: 3 width of locknut: 4.38 thread Length: 1.19 total Length: 3.69 connection: threaded x compression material: Malleable iron finish: Triple Coat Chromate, zinc electroplated, epoxy powder coat UL standard: 514B UL listed: E14814 CSA standard C22.2 no. 18.3 CSA certified: 065178 NEMA: FB 1.