Exit Blocks incorporate a sheave, and are used to exit any internal control line (halyards, pole lifts, etc.) from a spar where a directional change of 90 to 180 degrees is required. Z-Spar Exit Blocks all attach to the mast with two (2) fasteners. Other Exit Blocks are available for replacement or exact matching purposes. See: Exit Blocks or, depending on the kind of spars you have, See also: Kenyon Exit Blocks, or Isomat Exit Blocks.
For Replacement Sheaves for these Exit Blocks, See Z-Spar Sheaves.
See Z-Spar Exit Plates for in-line exit applications (Halyard Exits) where there is no directional change.
See also: Z-Spar Jib Boxes.
Small cast Aluminum Exit Block with 1 1/8″ (28mm) diameter Aluminum sheave measures (visible when installed) 2 3/4″ (70mm) long x 13/16″ (20mm) wide. Assembly fits in mast cutout 1 7/8″ (47mm) high x 17/32″ (13.5mm) wide and projects 13/16″ (20mm) inside of mast. Mounting surface is slightly curved to fit a variety of mast surfaces. Assembly is mounted with (2) 5mm fasteners on 2 1/4″ (57mm) hole centers. New Version has 8mm wide Aluminum Sheave with an 8mm ID, Original version had Narrow 6mm wide sheave, Z-1610AR, with a 6mm ID.
Gray Plastic Exit Block with 1 1/8″ (28mm) diameter sheave will accommodate lines up to 1/4″ (6mm) diameter. Plastic sheave (Z-1614) or Aluminum sheave (Z-1611A) rides on 6mm SS axle. Block measures (visible when installed) 3 1/8″ (80mm) long x 7/8″ (22mm) wide. Assembly fits in mast cutout 1 15/16″ (50mm) high x 3/4″ (18mm) wide and projects 3/4″ (18mm) inside of mast. Mounting surface is slightly curved to fit a variety of mast surfaces. Assembly is mounted with (2) 3/16″ (5mm) fasteners on 2 7/16″ (62mm) hole centers.
Cast Aluminum Exit Block with 1 1/8″ (28mm) diameter sheave will accommodate lines up to 1/4″ (6mm) diameter. Plastic (Z-1614) or Aluminum sheave (Z-1611A) rides on 6mm SS axle. Block measures (visible when installed) 3 1/8″ (80mm) long x 7/8″ (22mm) wide. Assembly fits in mast cutout 1 15/16″ (50mm) high x 3/4″ (18mm) wide and projects 3/4″ (18mm) inside of mast. Mounting surface is slightly curved to fit a variety of mast surfaces. Assembly is mounted with (2) 3/16″ (5mm) fasteners on 2 7/16″ (62mm) hole centers.
Exit Block w/ 45mm Sheave: Z-1769D:
Exit Block w/ 45mm Aluminum Sheave: Z-1769A:
Gray Plastic Exit Block with 1 3/4″ (45mm) diameter sheave will accommodate lines up to 7/16″ (12mm) diameter. Plastic (Z-1616) or Aluminum Sheave (Z-1616A) rides on 8mm SS axle. Block measures (visible when installed) 4 1/2″ (115mm) long x 1 1/4″ (31mm) wide. Assembly fits in mast cutout 3″ (75mm) high x 1″ (24mm) wide and projects 1 1/8″ (28mm) inside of mast. Mounting surface is slightly curved to fit a variety of mast surfaces. Assembly is mounted with (2) 3/16″ (5mm) fasteners on 3 5/8″ (92mm) hole centers.
Exit Block w/ 60mm Sheave: Z-1057D:
Exit Block w/ 60mm Aluminum Sheave: Z-1057A:
Gray Plastic Exit Block with 2 3/8″ (60mm) diameter sheave will accommodate lines up to 1/2″ (13mm) diameter. Plastic (Z-1618) or Aluminum sheave (Z-1618A) rides on 8mm SS axle. Block measures (visible when installed) 5 7/16″ (138mm) long x 1 3/8″ (36mm) wide. Assembly fits in mast cutout 3 11/16″ (93mm) high x 1 3/16″ (29mm) wide and projects 1 3/8″ (36mm) inside of mast. Mounting surface is slightly curved to fit a variety of mast surfaces. Assembly mounts with (2) 1/4″ (6mm) fasteners on 4 1/2″ (114mm) hole centers.
Aluminum Exit Block w/ 60mm Sheave: Z-1058D:
Aluminum Exit Block w/ 60mm Alu. Sheave: Z-1058A:
Cast Aluminum Exit Block with 2 3/8″ (60mm) diameter sheave will accommodate lines up to 9/16″ (14mm) diameter. Plastic sheave (Z-1618) or Aluminum sheave (Z-1618A) rides on 8mm SS axle. Block measures (visible when installed) 5 5/16″ (135mm) long x 1 5/16″ (34mm) wide. Assembly fits in mast cutout 3 3/4″ (95mm) high x 1 1/8″ (28mm) wide and projects 1 5/8″ (41mm) inside of mast. Mounting surface is slightly curved to fit a variety of mast surfaces. Assembly mounts with (2) 1/4″ (6mm) fasteners on 4 1/2″ (114mm) hole centers.
Aluminum Exit Block w/ 80mm Sheave: Z-1060D:
Aluminum Exit Block w/ 80mm Alu. Sheave: Z-1060A:
Cast Aluminum Exit Block with 3 1/8″ (80mm) diameter sheave will accommodate lines up to 5/8″ (16mm) diameter. Plastic (Z-1707) or Aluminum sheave (Z-1707A) rides on 14mm SS axle. Block measures (visible when installed) 7 1/2″ (190mm) long x 1 1/2″ (38mm) wide. Assembly fits in mast cutout 5″ (125mm) high x 1 5/16″ (33mm) wide and projects 2″ (50mm) inside of mast. Mounting surface is slightly curved to fit a variety of mast surfaces. Assembly mounts with (2) 1/4″ (6mm) fasteners on 6 3/16″ (157mm) hole centers
