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Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
www.RigRite.com          Ordering/Questions

Z-SPAR Jib Boxes

Z-Spar Masts use one of several different Jib Boxes for internal Jib and/or Spinnaker Halyards on Fractional Rigs. These Jib Boxes are also used for attachment of a Staysail stay and Halyards. Internal Halyards exit lower on the mast, normally using standard Z-Spar Exit Plates, or (on older rigs) sheaves that were integrated into the Mast Foot.
See also: Isomat Jib Boxes and other Jib Boxes.

For Replacement Sheaves for these Jib Boxes, See Z-Spar Sheaves. See also: Z-Spar Exit Blocks.
 


Jib Box Assembly w/ 6mm Pin: Z-1051A:
Small cast Jib Box Assembly with 6mm Pin for Forestay attachment has a single Jib halyard sheave and a Spinnaker halyard sheave. Assembly uses (2) 28mm (1 1/8") Acetyl Sheaves (Z-1614), on 6mm Axles for line up to 6mm (1/4") diameter. Unit fits in mast cutout 3 7/8" (98mm) high x 3/4" (19mm) wide, internal mounting flange is slightly curved to fit a variety of mast sections. Assembly is designed to fit through the mounting slot and is then fastened from the outside with (2) 3/16" (5mm) rivets. Unit measures (maximum) 4 3/4" long x 1 1/16" wide and projects 1 3/8" (maximum) inside of mast. Optional Toggle, Mer 5770-408, is recommended for use with Furling Systems. 3283

 

Jib Box Ass'y w/ 10mm Pin: Z-1052A:
Cast aluminum Jib Box Assembly with 10mm Pin for Forestay attachment has a single Jib halyard sheave and a Spinnaker halyard sheave. Assembly uses (2) 45mm (1 3/4") Acetyl Sheaves (Z-1616), on 8mm Axle for line up to 10mm (3/8") diameter. Assembly fits in mast cutout 6 1/4" (160mm) high x 1 1/8" (28mm) wide. Internal mounting flange is slightly curved to fit a variety of mast sections. Assembly is designed to fit through the mounting slot and is then fastened from the outside with (2) 6mm machine screws. Unit measures (maximum) 8 1/4" long x 1 3/8" wide and projects 2 1/4" (maximum) inside of mast. 3754

 

Jib Box Ass'y w/ Toggle (12mm Pin): Z-1053AX:
Cast aluminum Jib Box Assembly has Forestay Toggle with 12mm Pin and a single Jib halyard and Spinnaker halyard sheave, Toggle sits on 12mm pin. Assembly uses a (lower) 45mm (1 3/4") Acetyl Sheave (Z-1616) and an (upper) 60mm (2 3/8") Acetyl Sheave (Z-1618), on 8mm Axles. Assembly fits in mast cutout 6 3/8" (162mm) high x 1 1/4" (31mm) wide. Internal mounting flange is slightly curved to fit a variety of mast sections. Assembly is designed to fit through the mounting slot and is then fastened from the outside with (2) 8mm machine screws which thread into locknuts held in casting (machine screws and locknuts included). Unit measures (maximum) 9" long x 2 1/8" wide and projects 2" (maximum) inside of mast. Other Toggle Pin sizes are available, please specify.

 

Jib Box Ass'y w/ Toggle (12mm Pin): Z-1055A:
Cast aluminum Jib Box Assembly has Forestay Toggle with 12mm Pin and (2) Jib halyard sheaves with an articulating sheave for redirecting a Spinnaker halyard from above, Toggle sits on 14mm pin. Assembly uses (2) 80mm (3 1/8") Acetyl Sheaves (Z-1707), on 14mm Axle for line up to 12mm (1/2") diameter. Assembly fits in mast cutout 5" (125mm) high x 2 1/2" (62mm) wide. Internal mounting flange is slightly curved to fit a variety of mast sections. Assembly is designed to fit through the mounting slot and is then fastened from the outside with (2) 8mm machine screws which thread into locknuts held in casting (machine screws and locknuts included). Unit measures (maximum) 8" long x 2 3/8" wide and projects 2 1/2" inside of mast. Other Toggle Pin sizes are available, please specify. 3334
 

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