FF250 inline female-female ball joints, 1/4-28 UNF, zinc plated for corrosion protection
FF-series ball joints are used in light-duty applications where the push/pull force in the linkage system is transferred generally along the centerline of the linkage itself. The ball stud provides some conical movement to allow for misalignment in the system.
| Carbon steel | Housing material | |
| Carbon steel | Stud material | |
| Right Hand | Thread direction |
| G | 1/4-28 UNF | Stud thread |
| G1 | 1/4-28 UNF | Housing thread |
| l2 | 17.48 mm | Housing thread depth |
| l5 | 4.37 mm | Hex height |
| l7 | 26.75 mm | Length |
| l8 | 20.62 mm | Length |
| l9 | 1.27 mm | Length |
| H | 33.35 mm | Length from center to face |
| d3 | 9.53 mm | Shank diameter |
| d4 | 4.8 mm | Neck diameter |
| L | 66.68 mm | Total length |
| S | 12.7 mm | Hex, Housing |
| ≈m | 0.027 kg | Weight |
| 3996 N | Force to remove ball stud |
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