(57) A casing (1) for a through type electrical connector (2), the casing being fitted
through a through hole (5) in a panel (3) into a lock position, and having a U-shaped
outer peripheral flange (8) resting against the panel (3) in the lock position; a
number of outer radial engaging members (12a,12b,12c), which define, with the flange
(8), respective U-shaped recesses for receiving the panel (3), and are inserted, in
an axial insertion direction (I), inside respective grooves (14) having complementary
profiles and formed in a lateral edge (15) of the hole (5); and two flexible retaining
members (16) extending in the same plane from respective opposite ends of the flange
(8), and having respective end projections (18) cooperating with the lateral edge
(15) of the hole (5) on the diametrically opposite side to one (12a) of the engaging
members (12a,12b,12c) to fix the casing (1) radially with respect to the panel (3)
in the lock position; the recesses (13) having respective openings (17), for insertion
of the panel (3), facing in an engaging direction (E) crosswise to the insertion direction
(I) to permit translation of the casing (1) in the engaging direction (E) when fitting
the casing (1) inside the hole (5).
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