2b thread class right-hand 4 thread quantity per inch chain assembly cres anodize surface treated internal thread w/chain or rope special acme thread series
2b thread class right-hand 28 thread quantity per inch side of cover has fine diamond knurl passivate surface treated internal threads uns thread series
2b thread class right-hand 0.774" overall length 18 thread quantity per inch cadmium surface treated internal thread w/chain or rope unef thread series