The present invention provides a strut mount bolted to a curved outer
cylinder attachment plate (6) without enlarging abolt hole, by inserting a
cylindrical portion (13) of a caulking nut (5) into a nut attachment hole
(11) of an attachment piece (10) of an outer cylinder (2) and pressurizing
and diminishing in diameter the circumference of the nut attachment hole
(11) to caulk and stick the nut attachment hole (11) and the caulking nut
(5).
