Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
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NG-86 Isomat Mast


Isomat NG-86 Mast
Measurements (OD): 9.84" x 6.77"   (250mm x 172mm)
Wall Thickness (minimum): .175"   (4.45mm)
Weight/ft.: 5.78 lbs.   Weight/M: 8.63 kg
Moments of inertia: Ixx = 51.66", Iyy = 25.23"
Moments of inertia: Ixx = 2150cm4, Iyy = 1050cm4
Circumference: 26 3/4"   (679mm)
Alloy: 6061-T6
Sail slides: 15/16" flat slides (A008M)
Standard Mast Lengths: 62'4" (19,000mm)

Common Mast usage: Beneteau 456*, 51, Idylle 15.5, Moorings 51;

NG-86 Mast Section
Bowman 44; Catana 381; Colvic 41; Crealock 44; CSY 50*; CT 48K; Cumulant 45; Endeavour 42*; Formosa 47, 51K; Gib Sea 44; Glacer 12.5K, 42; Hunter 45*; Island Packet Cat; Jeanneau Sun-Odyssey 44, Sun-Kiss 47; Jouet 1300MSK; Kalik 44; Lagoon 37; Mason 43K; Motiva 41, 42, 43; Nissen 42; Pacific 43; Reinke 13M, 14M; Roberts 43, 44, 46; Saracen 15K; Skorpion 12M, 12.5M; Sonate Ovni 47; Swan 411; Taswell 43*, 49; Tayana 42*; Trintella 44; Triton 48; Vagabond 52K; Vindo 90K;
 

NG-86 Mast Components
Masthead Parts
Exit Blocks
Spreaders
Spreader Bases
Spinnaker Cars
Exit Plates
Cleats
Mainsail Gates
Gooseneck Brackets
Winch Pads
Vang Brackets and Hardware
Mast Base Halyard Exit Boxes
Deck Collars, Mast Boots and Hardware
Mast Steps
Mast Base Halyard Turning Blocks

NG-86 Mast – Masthead Parts
NG2 Mastheads are cast from high-strength Aluminum alloy, and are welded into the mast section. Isomat NG2 Mastheads are easily identified by having 4 sheaves (or provision for 4 sheaves) side by side, on the forward side. For Details, See: NG2 Masthead Assembly.
 
NG2 Masthead Cover Plate: NG2-1:
Cast aluminum Masthead Cover Plate for NG2 standard Masthead. Masthead Cover Plate also provides level surface for mounting Anchor light and has holes and slots for exiting other electrical wires. Unit is 10 1/4" (260mm) long (maximum) x 7 1/8" (180mm) wide, and is fastened with two (2) 6mm screws, NG2-1S, that thread into tapped holes in Masthead.

 

NG2-1
NG2 Masthead Spinnaker Crane: NG2-2:
Heavy SS Masthead Spinnaker Crane is designed to attach to standard Isomat NG2 Masthead. Crane allows for off-center attachment of one or two standard swivel blocks for external spinnaker halyards, See Spinnaker Halyard Blocks. This method of running spinnaker halyards has less friction and eliminates the chafe on halyards that is inherent in the standard internal halyard design – it is the only choice for long-distance racing or cruising. Halyards can be led internally; running from the swivel block to an entrance 5-8 feet down from the masthead, but this method does add a potential chafe spot. Attaches with (4) 5/16" (8mm) bolts and locknuts. SS Plate is (maximum) 4" long x 5 3/8" wide x 1/4" thick, and projects 1 3/8" forward of the masthead. Easily positioned on the masthead, mounting requires drilling (4) 5/16" holes in the masthead. Unit comes complete with fasteners.

 

 

 

NG2 Masthead Sheave: NG2-3:
Factory standard Acetyl Sheave is 85mm (3 3/8") x 15mm (5/8") wide x 22mm (7/8") ID.

 

NG2-3

NG2 Masthead Sheave - Aluminum: NG2-3A:
Anodized Aluminum Sheave is 85mm (3 3/8") x 15mm (5/8") wide x 22mm (7/8") ID, and is much sturdier than the plastic version.

 

NG2 Masthead Sheave - Aluminum Ball-Bearing: NG2-3ABB:
Anodized Aluminum Ball-Bearing Sheave is 85mm (3 3/8") x 15mm (5/8") wide x 22mm (7/8") ID. Unit features Torlon Balls for high load capacity with minimum friction.

 

NG2 Short Masthead Sheave Axle: NG2-6S:
Short SS 'Drop-in' Tubular Masthead Sheave Axle is 22mm (7/8") OD x 46mm (1 3/4") long. Hollow Axle fits in Aft side of NG2 Masthead and supports 2 Main Halyard Sheaves (NG2-3 or NG2-3A).

 

NG2 Long Masthead Sheave Axle: NG2-6L:
Long SS 'Drop-in' Tubular Masthead Sheave Axle is 22mm (7/8") OD x 81mm (3 1/4") long. Hollow Axle fits in Forward side of NG2 Masthead and supports 4 Jib/Spinnaker Halyard Sheaves (NG2-3 or NG2-3A).

 

NG2 Masthead Clevis Pin: NG2-6P:
SS Clevis Pin is used in NG2 Masthead for attachment of topping lift, lazy jacks, or other items. This item is not standard on all masts and your Masthead may not have a hole drilled for this Pin, but, if not drilled, hole position is marked by an indent. Masthead can be easily drilled to add this item if required. Clevis Pin is 8mm (5/16") diameter with a 52mm (2 1/16") grip length. CPM8-52

 


NG-86 Mast – Exit Blocks
Several varieties of Exit Blocks are used on the NG-86 Mast Section, See Isomat Exit Blocks.

 


NG-86 Mast – Spreaders
The NG-86 Mast Section is commonly used with Several different sizes of Spreaders. Standard Spreader Bases are listed below, for Spreaders, Spreader Parts, and other Spreader Bases, See Isomat Spreaders and Components.

 


NG-86 Mast – Spreader Bases
Spreader Base for BF4 Spreader - Port: BF4-35P:
Spreader Base for BF4 Spreader - Starboard: BF4-35S:
Unique spreader base design incorporates (2) sockets for use with stemballs on lower and intermediate shrouds. Cast aluminum bases are welded to the mast and accommodate a variety of spreader angles depending on how the inboard spreader end is cut. BF-4 Spreader is attached with (1) clevis pin that goes through a bushing to allow for some shock loading. Bases have hole for 21mm (13/16") OD Spreader Bushing. Base measures 5 1/8" high (maximum) x 4 7/8" long, and projects 5" out from the Mast. For use with NG-46 and larger Mast sections. Please specify Mast Section and port or starboard when ordering. For Spreaders and Spreader Parts, See Isomat Spreaders and Components.

 

Spreader Base for BF5 Spreader - Port: BF5-35P:
Spreader Base for BF5 Spreader - Starboard: BF5-35S:
Unique spreader base design incorporates (2) sockets for use with stemballs on lower and intermediate shrouds. Cast aluminum bases are welded to the mast and accommodate a variety of spreader angles depending on how the inboard spreader end is cut. BF-5 Spreader is attached with (1) 12mm clevis pin that goes through a plastic bushing to allow for some shock loading. New Bases have hole for 21mm (13/16") OD Spreader Bushing, BF5-31. Base measures 5 1/2" high (maximum) x 6 3/8" long, and projects 5 1/4" out from the Mast. For use with NG-70 and larger Mast sections. Please specify Mast Section and port or starboard when ordering. For Spreaders and Spreader Parts, See Isomat Spreaders and Components.

 

BF5-35P

 

 

 


NG-86 Mast – Spinnaker Cars
Several varieties of Spinnaker Cars are used on the NG-86 Mast Section, See Isomat Spinnaker Cars.

 

Spinnaker Pole Mast Eye: NG1-37:
Fixed Eye for attachment of whisker or spinnaker pole on the front of the mast. Used where vertical adjustment of inboard pole end is not required. Diamond shaped SS pad is curved to fit the front of the Mast and has welded horizontal Ring. Unit is 65mm (2 3/16") high x 76mm (3") wide, and attaches to Mast with (4) 1/4" screws or rivets. 8mm Ring has 50mm (2") ID.

 

 

NG2 Reaching Strut Mast Eye: NG2-38:
Diamond shaped SS Reaching Strut Mast Eye with welded vertical Eye. Unit is 115mm (4 1/2") high x 73mm (2 7/8") wide, and attaches to the side of the Mast with (4) 1/4" screws or rivets. 10mm Eye has (minimum) 40mm (1 1/2") ID.

 


NG-86 Mast – Exit Plates
Several varieties of Exit Plates are used on the NG-86 Mast Section, See Isomat Exit Plates.

 


NG-86 Mast – Cleats
Several sizes of Cleats are used on the NG-86 Mast Section, See Isomat Cleats.

 


NG-86 Mast – Mainsail Gates
NG2 Mainsail Gate & Screw Kit: NG2-9K:
Cast aluminum Mainsail Gate fits NG-60 through NG-105 Mast Sections. Gate has horizontal slot for Thumbscrew (NGA-10); Gate is 'opened' by loosening Thumbscrew and sliding gate away from Mainsail track. Kit includes Gate casting, NG2-9, and SS Thumbscrew, NGA-10.

 

NG2-9K

NG2 Mainsail Gate: NG2-9:
Cast aluminum Mainsail Gate fits NG-60 through NG-105 Mast Sections. Gate casting is 2 3/8" (60mm) high x 1 7/16" (36mm) wide, with 1/4" (7mm) deep lip. Part is labeled #157007.

 

NG2-9
NG2 Mainsail Gate Screw: NGA-10:
SS Thumbscrew is 4mm diameter with 5/8" (15mm) long thread and has serrated plastic head.

 

NGA-10

 

NG2 Mainsail Gate Screw - All Stainless: NGA-10SS:
All Stainless Thumbscrew is 4mm diameter with 5/8" (15mm) long thread and knurled head.

 

 

 


AutoReef Fairlead
AutoReef Fairlead: NGA-65:
SS AutoReef Fairlead is mounted on either side of mast above gooseneck bracket. Acts as fairlead for reef line and stop for sail when reefed with AutoReef (single line) reefing system. Flattened SS ring is welded to diamond shaped SS plate. Ring is 32mm (1 1/4") OD x 16mm (5/8") ID, plate is 65mm (5/8") high x 40mm (1 5/8") wide and is fastened with four (4) 1/4" (6mm) rivets. For details, See: Isomat AutoReef System.

 

NGA-65


NG-86 Mast - Gooseneck Brackets and Hardware
NG2 Gooseneck Bracket: NG2-11:
Cast aluminum Gooseneck Mast Bracket for use with NB-32, NB-40, and NB-55 new-style Gooseneck Assemblies. Bracket fits NG-51 through NG-86 Mast Sections and is fastened with eight (8) 1/4" (6mm) rivets. Bracket has 22mm (7/8") hole at top and 8mm (5/16") hole on bottom side, for use with any of the NB2-1 Vertical Gooseneck Toggle Pins. For Gooseneck Parts not listed below, See NB-32, NB-40, or NB-55 Boom Section.

 

NG2-11

NB-2 Vertical Gooseneck Toggle Ass'y w/ Reef Hooks: NB2-1A:
Vertical Gooseneck Toggle Pin Assembly with Tack Shackle and Reef Hooks is used to attach the NB2 Gooseneck to Isomat Gooseneck Mast Bracket (NG2-11). SS Toggle Pin has 2 integral Reef Hooks and is 22mm (7/8") diameter with an 8mm (5/16") threaded stud on the bottom, with washer and SS Locknut. Assembly includes Tack Shackle (NB2-2) and Horizontal Gooseneck Pin (NB2-3).

 

NB2-1A

NB-2 Vertical Gooseneck Toggle Pin w/ Reef Hooks: NB2-1:
Vertical Gooseneck Toggle Pin with Reef Hooks includes washer and SS Locknut. As NB2-1A, above, but without Tack Shackle and Horizontal Gooseneck Pin. SS Toggle Pin has 2 integral Reef Hooks and is 22mm (7/8") diameter with an 8mm (5/16") threaded stud on the bottom, and has (2) 10mm (3/8") cross-holes for Tack Shackle and Horizontal Gooseneck Pin.

 

NB-2 Tack Shackle: NB2-2:
SS Tack Shackle fits through hole in top of NG2 Vertical Gooseneck Toggle Pins. Shackle has 8mm (5/16") pin.

 

Replacement Screw Pin for NB2-2 Tack Shackle: NB2-2SP:
Replacement Screw Pin only for NB2-2 Tack Shackle. Screw Pin has 8mm thread.

 

NB-2 Horizontal Gooseneck Pin: NB2-3:
Clevis Pin is 10mm (3/8") dia. x 49mm (2") long. Used to attach the NB2 Gooseneck to Isomat Vertical Gooseneck Toggle Pin (NB2-1).

 

NB-2 Vertical Gooseneck Toggle Ass'y: NB2-1ARA:
Vertical Gooseneck Toggle Pin Assembly is used to attach the NB2 Gooseneck to Isomat Gooseneck Mast Bracket (NG2-11). For use with AutoReef Systems not requiring Reef hooks. SS Toggle Pin is 22mm (7/8") diameter with an 8mm (5/16") threaded stud on the bottom, with washer and SS Locknut. Assembly includes Tack Shackle (NB2-2) and Horizontal Gooseneck Pin (NB2-3).

 

NB2-1ARA

NB-2 Vertical Gooseneck Toggle Pin - AR: NB2-1AR:
Vertical Gooseneck Toggle Pin includes washer and SS Locknut. As NB2-1ARA, above, but without Tack Shackle and Horizontal Gooseneck Pin. For use with AutoReef Systems not requiring Reef hooks. SS Toggle Pin is 22mm (7/8") diameter with an 8mm (5/16") threaded stud on the bottom, and has (2) 10mm (3/8") cross-holes for Tack Shackle and Horizontal Gooseneck Pin.

 

NB-2 Old-Style Vertical Gooseneck Toggle Pin: NB2-1XP:
Vertical Gooseneck Toggle Pin Assembly is used to attach the NB2 Gooseneck to Isomat Gooseneck Mast Bracket (NG2-11). Has 10mm (3/8") cross pin at top for using the Old-Style Reef Hook/Tack Assembly (NB2-5X). SS Toggle Pin is 22mm (7/8") diameter with an 8mm (5/16") threaded stud on the bottom, has 10mm (3/8") cross-hole for Horizontal Gooseneck Pin (NB2-3), and includes washer and SS Locknut.

 

NB-2 Old-Style Reef Hook/Tack Attachment: NB2-5X:
Old-Style formed combination SS Reef Hook and Tack anchor is passed through the tack grommet in sail and clipped over horizontal cross pin in top of special 22mm gooseneck pin, NG2-1P. Formed from heavy 10mm (3/8") SS rod, unit measures a maximum of 4" (100mm) high x 3 1/2" (90mm) wide.

 

NB2-5X
NG2 Old-Style Gooseneck Bracket: NG2-11X:
Old-Style Cast aluminum Gooseneck Mast Bracket fits NG-51 through NG-86 Mast Sections, for use with NB-32, NB-40, and NB-55 old-style Gooseneck Assemblies. Bracket is 3 7/8" (98mm) high x 3 1/2" (90mm) wide, and is fastened with eight (8) 1/4" (6mm) rivets. Bracket has hole for 10mm (3/8") Vertical Pin, NB2-1XA, used with SS Gooseneck Toggle NB2-2XA.  For parts associated with this Gooseneck Bracket, See NB-32, NB-40, or NB-55 Old-Style Gooseneck Assemblies.

 


NG-3 Gooseneck Bracket for 16mm Pin: NG3-11:
Cast aluminum Gooseneck Mast Bracket for use with FB-810 and larger Booms. Heavy-duty Bracket fits NG-86, FM-740 and larger Mast Sections. Bracket is 6 7/8" (175mm) high x 4" (100mm) wide, and attaches to mast with twelve (12) 1/4" (6mm) rivets. Bracket has holes for 16mm (5/8") pin, for use with any of the FB3-1 Vertical Gooseneck Pins.

 

FB3 Vertical Gooseneck Pin w/ Tack & Reef Hooks: FB3-1A:
Vertical Gooseneck Toggle Pin for use with NG3-11 Gooseneck Bracket and FB3-416 Gooseneck Toggle. SS Toggle Pin has 2 integral Reef Hooks and includes captive Tack Pin, washer and SS Locknut. Unit is 16mm (5/8") diameter x 160mm (6 3/8") long (under head) with 12mm Reef Hooks and a 10mm (3/8") tack Pin.

 

FB3 Gooseneck Toggle: FB3-416:
Gooseneck Toggle is used with NG3-11 Gooseneck Bracket to attach to FB-810 and larger FB Booms. Cast Aluminum Gooseneck Toggle is 3 1/8" high and accommodates 16mm vertical and 14mm horizontal pins. Anodized Toggle is 3 1/8" (80mm) high x 1 9/16" (39mm) wide x (maximum) 3 3/4" (95mm) long, pin holes are on 2" (50mm) centers.

 


NG-86 Mast – Winch Pads
NG-86 Side Winch Pad - Clear Anodized: NG86-20:
Formed aluminum Bracket fits either side of NG-86 Mast Section. Winch mounting surface on Bracket is 6 1/2" (165mm) high x 5 3/4" (145mm) wide. Anodized Bracket is 1/4" (6mm) thick and fastens to Mast with eight (8) 1/4" (6mm) rivets. 68,80

 

NG-86 Aft Winch Pad - Clear Anodized: NG86-21:
Formed aluminum Bracket fits aft side of NG-86 Mast Section. Designed to mount under the Boom for use with a Reef line winch. Winch mounting surface on Bracket is 5 3/8" (135mm) square and angles aft approximately 12 degrees to align Winch with Outhaul or Reef lines exiting from Boom. Anodized Bracket fastens to Mast with eight (8) 1/4" (6mm) rivets. 62 

 


NG-86 Mast - Vang Brackets and Hardware
Brackets are available with Toggles to fit any type of Vang. Isomat Masts were often supplied with an Isovang solid Vang as standard equipment, they are also commonly added to boats originally supplied without one. See: Isomat Isovangs.


NG2 Vang Bracket: NG2-12:
Cast aluminum Vang Bracket fits NG-51 through NG-86 Mast Sections. Bracket is 4 3/4" (120mm) high x 3 1/2" (90mm) wide, and is fastened with eight (8) 1/4" (6mm) rivets. Bracket has 22mm (7/8") hole at top and 14mm (9/16") hole on bottom side, for use with the NG2-14A Vertical Vang Toggle Pin Assembly, and any of the NG2 Vang Toggles listed below. MS

 

NG2 Vang Toggle Pin Ass'y : NG2-14A:
Assembly converts NG2 Vang Bracket, NG2-12, for use with any of the NG2 Vang Toggles listed below. Includes Vang Toggle Pin (NG2-14), NG2 Vang Bushing (NG2-13), and SS Cotter Ring.

 

NG2 Vang Toggle Pin: NG2-14:
SS Clevis Pin is 14mm (9/16") diameter with a 125mm (5") grip length, and has 8mm (5/16") hole for Cotter Ring or Block attachment. Fits vertically in NG2-12 Vang Bracket.

 

NG2 Vang Bushing: NG2-13:
SS Bushing is used in upper hole of NG2-12 Vang Bracket to adapt it for use with Vang Toggle Pin (NG2-14). Bushing is 22mm (7/8") OD x 14mm (9/16") ID x 16mm (5/8") long.

 

NG2 Vang Bracket Ass'y w/ 5/8" Toggle: NG2-17A:
Complete NG2 Vang Bracket Assembly with Toggle for Vang with 5/8" Pin. Assembly consists of Vang Bracket (NG2-12), Vang Toggle Pin Assembly (NG2-14A), and NG2-17 Vang Toggle with 5/8" hole. Assembly is fastened to Mast with eight (8) 1/4" (6mm) rivets or screws.

 

NG2-17A

NG2 SS Vang Toggle w/ 5/8" hole: NG2-17:
SS Welded Vang Toggle Fits NG2-12 Vang Bracket. SS tube is 2 5/8" (67mm) long and is drilled for 14mm Vertical Pin, NG2-14. Welded SS Tab is 5.5mm (7/32") thick and projects 2 1/2" (65mm) out from tube. Tab has 5/8" (16mm) hole for attachment of Vang.

 

NG2 Vang Bracket Ass'y w/ 7/8" Toggle: NG2-19A:
Complete NG2 Vang Bracket Assembly with Toggle for Vang with 22mm (7/8") Pin. Assembly consists of Vang Bracket (NG2-12), Vang Toggle Pin Assembly (NG2-14A), and NG2-19 Vang Toggle with 22mm (7/8") hole. Assembly is fastened to Mast with eight (8) 1/4" (6mm) rivets or screws. For use with the NG2 Isovang. Also recommended for use with Soft (block and tackle) Vangs, as the large hole will accommodate any shackle.

 

NG2 SS Vang Toggle w/ 7/8" hole: NG2-19:
SS Welded Vang Toggle Fits NG2-12 Vang Bracket. SS tube is 2 5/8" (67mm) long and is drilled for 14mm Vertical Pin, NG2-14. Welded SS Tab is 5.5mm (7/32") thick and projects 4" (100mm) out from tube. Tab has 22mm (7/8") hole for attachment of NG2 Isovang.

 

NG2-19


NG-86 Mast - Welded Mast Base Exit Boxes
Some Isomat Masts have Welded Exit Boxes at the base of the mast for leading internal halyards out of the Mast at Deck level, rather than higher on the mast using standard Exit Plates. Halyards exit the Mast angled aft, toward the cockpit, eliminating the need for any additional hardware at the base of the Mast. Welded Exit Boxes are especially common on Cruising Yachts. The NG-86 Mast Section would normally use NG2 Welded Exit Boxes, See Welded Mast Base Exit Boxes.

 


NG-86 Mast - Deck Collars, Mast Boots and Hardware
 
NG-86 Mast Boot: NG86-15B:
Heavy molded Black Rubber Boot for use with NG-86 and larger NG Mast sections. Lower side of Boot fits over Deck Collar, stepped upper side is trimmed to fit Mast section.

 

NG-86 White Mast Boot - Special for 7-Bail Deck Collar: NG86-15B-10:
Deluxe Hard molded White PVC Mast Boot to fit NG-86 Mast Section and 7-Bail Deck Collar, NG86-10, below. White PVC Mast Boot is 12" long x 3 1/4" high. As used on Island Packet.

 

 
NG-86 Mast Boot Clamp: NG86-16M:
All Stainless Steel Clamp for use with Mast Boot on NG-86 Mast.

 

NG-86 Deck Collar Boot Clamp: NG86-16D:
All Stainless Steel Clamp is suitable for use with Mast Boots on all NG-86 Deck Collars.

 

Mast Collar Wedge – Small Rubber: NGA-18:
Heavy Extruded Rubber Wedge for use with Isomat and other Masts. Small stepped Rubber Wedge is used to support the mast as it passes through the Deck Collar. Wedge is 2 3/4" (70mm) long x 1 1/8" (28mm) wide, and is 15/16" (24mm) thick at the top tapering to 3/8" (10mm) thick at the bottom.

 

NGA-18

Mast Collar Wedge – Large Rubber: NGA-19:
Heavy Extruded Rubber Wedge for use with Isomat and other Masts. Large stepped Rubber Wedge is used to support the mast as it passes through the Deck Collar. Wedge is 2 3/4" (70mm) long x 1 1/8" (28mm) wide, and is 1 3/16" (30mm) thick at the top tapering to 11/16" (18mm) thick at the bottom.

 

NGA-19


NG-86 Deck Collar – 7 Bail Type: NG86-10:
Cast Aluminum Deck Collar for use with NG-86 Mast Section. Deck Collar has provisions for 7 bails (NG2-20), for attachment of a soft Boom Vang and up to 4 standard blocks. Cast Deck Collar is 14" (358mm) long x 11 5/8" (295mm) wide, and fastens to deck with (6) 1/4" (6mm) screws. Maximum inside dimensions 11 3/16" x 7 1/2".   Bcirc. 32 1/8".  014*,80 

 

NG80-10
NG2 Deck Collar Bail: NG2-20:
SS Formed Bail is used for attachment of Boom Vang. Fits in integral slot(s) in Deck Collar. Bail is installed from underside of Deck Collar Casting, Deck Collar must be removed to install Bail. Bail is made from 10mm (3/8") rod, and is 2 3/4" (70mm) long x (maximum) 1 15/16" (50mm) high.

 

NG2-20

NG-86 Deck Collar – New Style: NG86-12:
Cast Aluminum Deck Collar for use with NG-86 Mast Section. Deck Collar has provisions for 14 new-style Mast Base Block Studs and a SS Bail, NG2-20, for attachment of a soft Boom Vang. Nut slots on underside of casting and 12mm holes allow for attachment of NG1 or NG2 threaded Block Studs, and/or Mast Base Turning Blocks, NGA-40 or NGA-41, without unfastening Deck Collar. Includes four (4) provisions for deck tie-down turnbuckles, and slots for (2) NGA-18 and (4) NGA-19 Mast Wedges. Cast Deck Collar is 16 1/16" (406mm) long x 11 1/8" (282mm) wide, and fastens to deck with (6) 3/8" (10mm) screws. Maximum inside dimensions 11 3/4" x 7 5/8".   Bcirc. 36 1/2".  021*,105 

 

NG105-12

NG-86 Mast - Mast Steps
NG-86 Mast Step – Special - Small: NG86-1S:
Small Cast Aluminum Mast Step for use with NG-86 Mast Section. Minimum size Mast Step is approximately 1/8" larger all around than NG-86 Mast Section and has no exterior attachment points. Cast Mast Step is 10" (254mm) long x 7" (177mm) wide, and fastens to deck or keel with (3) 1/2" (12mm) Screws or Bolts. 136S,L37

 

NG86-3
NG-86 Mast Step – 5 Bail Type: NG86-2:
Cast Aluminum Mast Step for use with NG-86 Mast Section. Mast Step has provisions for 5 bails (NG2-20), for attachment of a soft Boom Vang and up to 4 standard blocks. Cast Mast Step is 13" (330mm) long x 8 5/8"  (220mm) wide, and fastens to deck or keel with (4) 5/16" (8mm) FH Screws. 136

 

Iso_NG80-2.gif (16301 bytes)
NG-86 Mast Step – Special - Weld-in Plug: NG86-3B:
Special weld-in Plug for use with NG-86 Mast Section. Minimum size Mast Step Plug is welded to NG-86 Mast and has rectangular slot (5 3/4" x 2 9/16") to sit on special Deck-mount Mast Base w/ Tenon, NG86-3A, below. Cast Mast Step Plug is 10" (254mm) long x 7" (177mm) wide x 1 5/8" thick, and protrudes 1" into Mast Section. As used on Lagoon 37, and others.

 

Deck-mount Mast Base w/ Tenon: NG86-3A:
Special Deck-mount Mast Base w/ Tenon attaches to Deck for use with NG86-3B weld-in Plug, above. Cast unit is 10" (254mm) long x 7" (177mm) wide, and has rectangular Tenon (5 1/2" x 2 1/2") with 1 1/2" center hole for wiring. Unit has built-in rocker to allow easy adjustment of mast rake, and fastens to deck with (4) 5/16" (8mm) FH Screws on 5 9/16" (140mm) (fore & aft) x 4 1/16" (105mm) (athwartships) centers. As used on Lagoon 37, and others.

 

NG-86 Mast Step – Block Stud Type: NG86-4:
Cast Aluminum Mast Step for use with NG-86 Mast Section. Mast Step has provisions for 10 clevis-pin like 14mm Block Studs, NG3-21, for attachment of Blocks with Bolt for Block Studs for leading halyards aft, and a bail (NG2-20), for attachment of a soft Boom Vang. Block Studs insert in recessed 14mm holes from underside of casting and have a 8mm (5/16") hole for block attachment. Mast Step must be removed to install Block Studs. Cast Mast Step is 11 7/8" (300mm) long x 10 7/16" (265mm) wide, and fastens to deck or keel with (4) 5/16" (8mm) FH Screws on 9 15/16" (250mm) (fore & aft) x 7" (178mm) (athwartships) centers.  176/181,80

 

NG86-4
NG3 Mast Step Block Stud - 14mm: NG3-21:
14mm SS Clevis Pin-shaped Block Stud is used for attachment of shackle or block to lead halyards aft. Fits in integral recessed hole in NG80-4, and NG86-4 Mast Steps. Block Stud is installed from underside of Mast Step Casting, Mast Step must be removed to install Block Studs. Special Block Stud is 14mm (9/16") diameter x 54mm (2 1/8") long (maximum), with a 35mm (1 3/8") grip length and an 8mm (5/16") hole for shackle pin or Block bolt.

 

NG3 Mast Step Block Pin Ass'y w/ Toggle - 14mm: NG3-21PTA:
Special 14mm SS Block Pin Assembly includes standard 14mm Pin, NG3-21, and cast SS Toggle with a 5/16" Pin for attachment of shackle or block. Removable Toggle is attached with a separate 8mm Pin (included), and has 5/8" (17mm) inside jaw clearance. Unit fits in integral recessed hole in Isomat Steps and Collars with 14mm mounting holes. Block Pin is installed from underside of Mast Step Casting, Mast Step must be removed to install Block Pins.

 

Block Pin Toggle only for 14mm Pin: NG3-21TA:
Special cast SS Toggle for use with standard 14mm SS Block Pin, NG3-21, is attached with an 8mm Pin (included). Toggle has a 5/16" Pin for attachment of shackle or block, and a 5/8" (17mm) inside jaw clearance. As used in Assembly NG3-21PTA, above.

 

NG2 Mast Step Bail: NG2-20:
SS Formed Bail is used for attachment of Boom Vang or/and standard blocks for leading halyards aft. Fits in integral slots in NG46 and larger Mast Steps. Bail is installed from underside of Mast Step Casting, Mast Step must be removed to install Bail(s). Bail is made from 10mm (3/8") rod, and is 2 3/4" (70mm) long x (maximum) 1 15/16" (50mm) high.

 

NG2-20

 

NG-86 Mast Base Halyard Turning Blocks
A variety of Mast Base Turning Blocks and Block Studs are used with the NG-86 Mast Steps and Deck Collars, See Isomat Mast Base Turning Blocks.

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