Top Nuts & Bottom Couplings

For Round & Non-Telescopic Square Stems – Ductile & Stainless

Ductile Iron

Top Nut Bottom Coupling
Solid Rod Max Torq* (ft-lb) Steel Pipe Max Torq* (ft-lb) Bore Diameter Trumbull Item No. Trumbull Item No.
7/8" 340 1/2" 325 0.905" 367-4953 367-4963
1" 390 3/4" 410 1.155" 367-4954 367-4964
1-1/4" 480 ---- ---- 1.265" 367-4905 367-4915
---- ---- 1" 510 1.330" 367-4901 367-4910
1-3/8" 530 ---- ---- 1.390" 367-4955 367-4965
1-1/2" 580 1-1/4" 640 1.675" 367-4956 367-4966
1-3/4" 680 1-1/2" 740 1.929" 367-4957 367-4967
2" 775 ---- ---- 2.047" 367-4958 367-4968
---- ---- 2" 920 ** 367-4959 367-4969
1-1/4" square stems*** 367-4930 367-4938

Stainless Steel

Top Nut Bottom Coupling
Solid Rod Max Torq* (ft-lb) Steel Pipe Max Torq* (ft-lb) Bore Diameter Trumbull Item No. Trumbull Item No.
1-1/4" 480 ---- ---- 1.265" 367-4935 367-4945
---- ---- 1" 510 1.330" 367-4933 367-4943
1-1/2" 580 1-1/4" 640 1.675" 367-4934 367-4944
---- ---- 2" 920 ** 367-4936 367-4947
1-1/4" square stems*** 367-4929 367-4937
* Maximum torque is based on the minimum load for 5/16" coil pin. For higher torque capacity or for square stems, consult Trumbull. ** Nuts and Couplings have 2.030" hub diameter; fit inside 2" pipe. *** Max torque is 250 ft-lb for 1-1/4" square tubing; and 460 ft-lb for solid bar.