2404-LL Steel Male JIC x Male NPTF Extra Long Adapter Check Part Number TUBE OD B UN/UNF-2A A NPTF L21 T21 Ref. C D D1 Aeroquip # 2404-LL-04-02 1/4 7/16-20 1/8-27 2.56 1.63 0.50 0.17 0.19 202114-2-4S 2404-LL-04-04 1/4 7/16-20 1/4-18 3.25 2.14 0.56 0.17 0.28 202114-4-4S 2404-LL-05-02 5/16 1/2-20 1/8-27 2.81 1.88 0.56 0.23 0.19 202114-2-5S 2404-LL-06-04 3/8 9/16-18 1/4-18 3.25 2.13 0.63 0.30 0.28 202114-4-6S 2404-LL-06-06 3/8 9/16-18 3/8-18 3.50 2.37 0.75 0.30 0.41 202114-6-6S 2404-LL-08-06 1/2 3/4-16 3/8-18 4.00 2.78 0.81 0.39 0.41 202114-6-8S 2404-LL-08-08 1/2 3/4-16 1/2-14 4.19 2.78 0.88 0.39 0.53 202114-8-8S 2404-LL-10-08 5/8 7/8-14 1/2-14 4.38 2.87 0.94 0.48 0.53 202114-8-10S 2404-LL-12-12 3/4 1 1/16-12 3/4-14 5.00 3.39 1.13 0.61 0.72 202114-12-12S 2404-LL-16-16 1 1 5/16-12 1-11 1/2 5.75 3.90 1.38 0.84 0.94 202114-16-16S