High temperature thread locking compound
AssigneeUnited Technologies Corporation
InventorsMichael D. Greenberg, Mark B. Gossner, James R. Kennedy, Nathan A. Shirk
Life of this patent
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Abstract
According to the present disclosure, a method for securing a threaded fastener in a threaded hole includes directly applying a locking compound to at least a portion of threads to be mated on either the threaded fastener or the threaded hole. The locking compound includes a substantially pure, non-chromated aluminum pigmented compound suspended in a water-based inorganic binder with temperature resistance in excess of 900 degrees Fahrenheit (about 482 degrees Celsius). The threaded fastener is threaded into the threaded hole after applying the locking compound on the threads to be mated.
Claims13
A method for securing a threaded fastener in a threaded hole, the method comprising:
- directly applying a locking compound to a portion of threads to be mated on either the threaded fastener or the threaded hole, wherein the locking compound comprises a substantially pure, non-chromated aluminum pigmented compound suspended in a water-based inorganic binder with temperature resistance in excess of 900 degrees Fahrenheit (about 482 degrees Celsius), and wherein the locking compound is between at least 5% of the portion of the fastener threads that are to be mated with the corresponding portion of the hole threads;
- and
- threading the threaded fastener into the threaded hole after applying the locking compound on the threads such that presence of the locking compound between the mated fastener threads and the hole threads causes an increase in running torque by at least about 60 inch-pounds after the assembly has been heated to a temperature exceeding about 900 degrees Fahrenheit (about 482 degrees Celsius).
Dependencies are inferred from the claim text.