Rounded T-Ball Backing Plates

Internally mounted Backing Plate Tangs for use only with Gibb/Norseman/Navtec 'Rounded' T-Ball Shroud fittings. A more modern version of the standard T-Ball, they are stronger and the Backing Plate is easier to install, requiring only a round hole (not a slot) in the Mast. Backing Plates are designed to fit through mounting hole and are then riveted from the outside. See also: Gibb T-Ball Backing Plate Tangs (Standard).

Gibb 'Rounded' T-Ball Backing Plates and Retaining Plugs
Heavy-duty Gibb 'Rounded' T-Ball Backing Plates for use with Gibb 'Rounded' T-Balls. Rubber plugs, GIB-842, are available to keep 'Rounded' T-Balls from moving when not under load. See below.
T-Ball Backing Plate for 7/32", 1/4", & 6mm wire: GIB 840-M06: SS T-Ball Backing Plate Tang for 7/32" and 1/4" (or 6mm) wire using Gibb 'Rounded' T-Ball fittings, GIB 841. Mounting requires a 1 3/16" hole in the Mast, unit is attached using (3) 3/16" (5mm) rivets. Formed Plate is 3 3/4" long x 1 3/16" wide, and is contoured for use with most Mast Sections.
T-Ball Backing Plate for 9/32", 5/16", 7mm & 8mm wire: GIB 840-M07: SS T-Ball Backing Plate Tang for 9/32" and 5/16" (or 7mm & 8mm) wire using Gibb 'Rounded' T-Ball fittings, GIB 841. Mounting requires a 1 1/2" hole in the Mast, unit is attached using (3) 1/4" (6mm) rivets. Formed Plate is 4 3/4" long x 1 1/2" wide, and is contoured for use with most Mast Sections.
T-Ball Backing Plate for 5/16" & 8mm wire: GIB 840-M08: Heavy Cast SS T-Ball Backing Plate Tang for 5/16" (or 8mm) wire using Gibb 'Rounded' T-Ball fittings, GIB 841. Mounting requires a 1 5/8" hole in the Mast, unit is attached using (3) 1/4" (6mm) rivets. Plate is 4 3/4" long x 1 1/2" wide, and is contoured for use with most Mast Sections.
T-Ball Backing Plate for 3/8" & 10mm wire: GIB 840-M10: Heavy Cast SS T-Ball Backing Plate Tang for 3/8" (or 10mm) wire using Gibb 'Rounded' T-Ball fittings, GIB 841. Mounting requires a 1 3/4" hole in the Mast, unit is attached using (4) 1/4" (6mm) rivets. Plate is 5 7/8" long x 1 3/4" wide, and is contoured for use with most Mast Sections.
T-Ball Backing Plate for 7/16" & 1/2", 11mm & 12mm wire: GIB 840-M12: Heavy Cast SS T-Ball Backing Plate Tang for 7/16" & 1/2" (or 11mm & 12mm) wire using Gibb 'Rounded' T-Ball fittings, GIB 841. Mounting requires a 2" hole in the Mast, unit is attached using (5) 1/4" (6mm) rivets. Plate is 7" long x 2" wide, and is contoured for use with most Mast Sections.

Rubber Retaining Plugs for Gibb 'Rounded' T-Balls
Rubber Retaining Plugs for use with Gibb/Navtec 'Rounded' T-Ball Shroud fittings. Rubber plugs keep 'Rounded' T-Balls from moving and disengaging when not under load. For replacement Plugs, measure wire size or take number from existing Plug.
Retaining Plug for 'Rounded' T-Ball w/ 7/32", 1/4", & 6mm wire: GIB 842-06: Rubber Retaining Plug for use with Gibb 'Rounded' T-Ball Backing Plate, *GIB 840-M06*, for 7/32", 1/4", and 6mm wire. Rubber Plug is 3/4" (19mm) long x 1/2" (12mm) wide. Plug is marked with the number 6, which is visible when installed.
Retaining Plug for 'Rounded' T-Ball w/ 9/32", 5/16", 7mm & 8mm wire: GIB 842-08:
Rubber Retaining Plug for use with Gibb 'Rounded' T-Ball Backing Plates, *GIB 840-M07, and GIB 840-M08, for 9/32", 5/16", 7mm & 8mm wire. Rubber Plug is 1" (25mm) long x 5/8" (16mm) wide. Plug is marked with the number 7/8*, which is visible when installed.
Retaining Plug for 'Rounded' T-Ball w/ 3/8" & 10mm wire: GIB 842-10: Rubber Retaining Plug for use with Gibb 'Rounded' T-Ball Backing Plate, GIB 840-M10, for 3/8" and 10mm wire. Rubber Plug is 1" (25mm) long x 3/4" (19mm) wide. Plug is marked with the number 10, which is visible when installed.
Retaining Plug for 'Rounded' T-Ball w/ 7/16", 1/2", 11mm & 12mm wire: GIB 842-12:
Rubber Retaining Plug for use with Gibb 'Rounded' T-Ball Backing Plate, GIB 840-12, for 7/16", 1/2", 11mm & 12mm wire. Rubber Plug is 1 1/4" (32mm) long x 1" (25mm) wide. Plug is marked with the number 12, which is visible when installed.

Spars, Rigging, and Hardware for Sailboats