3an is 3/8-24 UNF,tube sleeve used to 3/16'' OD inch stainless steel tube. 4an is 7/16-20 UNF,tube sleeve used to 1/4'' OD stainless steel tube. 6an is 9/16-18 UNF,tube sleeve used to 3/8'' OD stainless steel tube. 8an is 3/4-16 UNF,tube sleeve used to 1/2'' OD stainless steel tube. 10an is 7/8-14 UNF,tube sleeve used to 5/8'' OD stainless steel tube. 12an is 1 1/16-12 UNF,tube sleeve used to 3/4'' OD stainless steel tube. |