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MIL-T-24634

1984 Edition, July 25, 1984

Complete Document

TREADS, COMPOUND-FILLED, FOR INCLINED LADDERS



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Description / Abstract:

Compound-filled treads are intended for, but not limited to, all inclined ladders on board ships, including fixed and feathering tread accommodation ladders.

Full treads come complete with end plates drilled with standard spaced holes, unless otherwise ordered, for mounting on new inclined ladders or for the replacement of old treads. They are suitable for both interior and exterior applications. The treads may also be used for fixed or feathering tread accommodation ladders. For feathering, treads shall be ordered without end plates. Treads shall not be installed in machinery spaces of U.S. Navy ships or other applications where the use of steel treads are required for resistance to fire damage.

Cap treads do not have end plates but are drilled for mounting, without modification, over existing worn treads which are no more than ⅜ inch wider than the nominal size. Cap treads may also be used for new installations when installed over steel channel sub-bases as in U.S. Navy ship machinery spaces, or aluminum channel sub-bases. They are suitable for both interior and exterior applications if adequate precautions are taken for the treatment of faying surfaces of dissimilar metals.