Sucker Rod Sucker rods and couplings are manufactured in accordance with API 11B.We can supply sucker rods as follows:Grade: C, D, K, KD, H;Size (in,): 5/8” (16 mm), 3/4”(19 mm), 7/8” (22 mm) , 1” (25 mm), 1-1/8”(28 mm) SpecificationRod BodyNominalConnector O.DLength DiaCirculation ToleranceThreadConnector CouplingSmall Drill HoleRodPony mminmminmminmminmminmmftmmft 5/815.880.625≤0.301 5/1631.751.25038.101.50031.81.250762025 3/419.050.7501 1/1638.101.50041.281.62538.11.500———— 7/822.230.8751 3/1641.281.62546.001.81241.31.6251000032.81350011.48 125.401.01 3/850.802.00055.602.18750.82.000 1 1/828.581.1251 9/1657.152.25060.332.375——