FB-3400 Sparcraft Boom

NG2 Gooseneck Bracket for 14mm Pin: NG2-12: Cast aluminum Gooseneck Mast Bracket for use with FB3400-1 Gooseneck Assemblies fits a variety of NG and FM 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 14mm (9/16") hole on bottom side, and 22mm (7/8") hole at top. Use with any of the FB2-1 Vertical Gooseneck Pins and FB2-414 Gooseneck Toggle, below. SS Bracket Bushing, NG2-13, is required for use with this Gooseneck Bracket.
	NG2 Gooseneck Bracket Bushing: NG2-13: SS Bushing for use with NG2-12 Gooseneck Mast Bracket and FB2-1 Vertical Gooseneck Pins. SS Bushing is 22mm OD x 14mm ID x 15mm long.
FM2 Gooseneck Bracket for 14mm Pin: FM2-11T: Extruded aluminum Gooseneck Mast Bracket for use with FB3400-1 Gooseneck Assemblies fits a variety of NG and FM Mast Sections. Bracket is 4 3/8" (112mm) high x 3 1/2" (90mm) wide, and is fastened with eight (8) 3/16" or 1/4" (5 or 6mm) rivets and (2) 1/4" (6mm) FH screws. Bracket has a 14mm (9/16") hole for use with any of the FB2-1 Vertical Gooseneck Pins and FB2-414 Gooseneck Toggle, below. Note: There are other variations of this Gooseneck Bracket, differing only in the Mast Sections that they fit. All use the same Pins and Toggles.
	FB2 Gooseneck Pin Ass'y w/ Reef Hooks: FB2-1A: 14mm Vertical Gooseneck Toggle Pin Assembly is used to attach the FB2-412 or FB2-414 Gooseneck Toggles to NG2-12 and FM2-11 Mast Brackets. SS Gooseneck Pin Assembly has (2) integral 10mm Reef Hooks and includes Tack Shackle NB2-2, washer and 14mm SS Locknut. Unit is 14mm (9/16") diameter x 135mm (5 3/8") long (under head).
	FB2 Gooseneck Pin Ass'y w/ Shackle: FB2-1ARA: 14mm Vertical Gooseneck Toggle Pin Assembly is used to attach the FB2-412 or FB2-414 Gooseneck Toggles to NG2-12 and FM2-11 Mast Brackets. SS Gooseneck Pin Assembly includes Tack Shackle NB2-2, washer and 14mm SS Locknut. Unit is 14mm (9/16") diameter x 135mm (5 3/8") long (under head).
	FB2 Tack Shackle: NB2-2: SS Tack Shackle fits through hole in top of FB2-1 Vertical Gooseneck Toggle Pins. Shackle has 8mm (5/16") pin, throat width is 22mm (7/8").
	Screw Pin for NB2-2 Tack Shackle: NB2-2SP: Replacement Screw Pin only for NB2-2 Tack Shackle. Screw Pin has 8mm thread.
	FB2 Gooseneck Pin w/ Tack Pin & Loops: FB2-1ARL: 14mm Vertical Gooseneck Toggle Pin Assembly is used to attach the FB2-412 or FB2-414 Gooseneck Toggles to NG2-12 and FM2-11 Mast Brackets. SS Gooseneck Pin Assembly includes welded side loops, 8mm (5/16") Tack Pin, washer and 14mm SS Locknut. Unit is 14mm (9/16") diameter x 135mm (5 3/8") long (under head).

*NG3 Gooseneck Bracket for 16mm Pin: NG3-11:* Cast aluminum Gooseneck Mast Bracket for use with FB3400-1 and larger Gooseneck Assemblies on a variety of 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 and FB3-416 Gooseneck Toggle, below.
	FB3 Gooseneck Pin w/ Tack & Reef Hooks: FB3-1A: 16mm Vertical Gooseneck Toggle Pin Assembly is used to attach the FB3-416 Gooseneck Toggle to NG3-11 Mast Bracket. SS Gooseneck Pin has (2) integral 12mm Reef Hooks and includes captive Tack Pin, washer and 16mm SS Locknut. Unit is 16mm (5/8") diameter x 160mm (6 3/8") long (under head).
	FB3 Gooseneck Pin w/ Tack Pin & Loops: FB3-1ARL: 16mm Vertical Gooseneck Toggle Pin Assembly is used to attach the FB3-416 Gooseneck Toggle to Mast Bracket, NG3-11. SS Gooseneck Pin Assembly includes welded side loops, 10mm (3/8") Tack Pin, washer and 16mm SS Locknut. Unit is 16mm (5/8") diameter x 170mm (6 3/4") long (under head).

FB-3400 Boom Components The FB-3400 Boom is commonly used with a variety of FB2, FB3, and NB2 components, detailed below. The FB3400-1 Gooseneck can be used with 2 different Gooseneck Toggles, detailed below, to allow for connection to two different sizes of Gooseneck Brackets, See: Mast Attachment Components, above.

FB2 Gooseneck Toggle for 14mm Vertical Pin: FB2-414: Cast Aluminum Gooseneck Toggle is used on FB-3400 and other Booms to attach to NG2-12 and FM2-12 Gooseneck Brackets, using any of the FB2-1 Vertical Gooseneck Pins, above. Anodized Toggle is 2 3/4" (69mm) high x 1 1/2" (37mm) wide x 3 3/8" (86mm) long, with holes for 14mm vertical and horizontal pins on 2" (50mm) centers.
*FB2 HD Gooseneck Toggle for 14mm Vertical Pin: FB2-414HD:*
Heavy-duty Solid Aluminum Gooseneck Toggle is used on FB-810 and larger Booms to attach to NG2-12 and FM2-12 Gooseneck Brackets, using any of the FB2-1 Vertical Gooseneck Pins, above. Anodized, machined Toggle is 2 3/4" (69mm) high x 1 1/2" (37mm) wide x 3 1/2" (89mm) long, with holes for 14mm vertical and horizontal pins on 2" (50mm) centers.
*FB2 SS Gooseneck Toggle for 14mm Vertical Pin: FB2-414S:*
Stainless Steel Gooseneck Toggle is used on FB-3400 and other Booms to attach to NG2-12 and FM2-12 Gooseneck Brackets, using any of the FB2-1 Vertical Gooseneck Pins, above. Polished, investment cast SS Toggle is 2 3/4" (69mm) high x 1 1/2" (37mm) wide x 3 1/2" (89mm) long, with holes for 14mm vertical and horizontal pins on 2" (50mm) centers. Unit is marked 34503014074.

FB3 Gooseneck Toggle for 16mm Vertical Pin: FB3-416: Cast Aluminum Gooseneck Toggle is used on FB-3400 and other Booms to attach to NG3-11 and other Gooseneck Brackets, using any of the FB3-1 Vertical Gooseneck Pins, above. Anodized Toggle is 3 1/8" (80mm) high x 1 1/2" (39mm) wide x 3 3/4" (95mm) long, with holes for 16mm vertical and 14mm horizontal pins, on 2" (50mm) centers.
FB3 Gooseneck Toggle for 16mm Pin: FB3-416HD: Heavy-duty Solid Aluminum Gooseneck Toggle is used on FB-810 and other Booms to attach to NG3-11 and other Gooseneck Brackets, using any of the FB3-1 Vertical Gooseneck Pins, above. Anodized, machined Toggle is 3 1/4" (83mm) high x 1 1/2" (36mm) wide x 3 3/4" (95mm) long, with holes for 16mm vertical and 14mm horizontal pins, on 2" (50mm) centers.

*FB-3400 Gooseneck Ass'y w/ Sheaves & Cams: FB810-1AC:*
Cast aluminum Gooseneck Assembly for FB3 Booms incorporates provisions for internal outhaul and 3 internal reef lines. Internal lines run over delrin sheaves, and down past lever action cams. Cams can be removed to allow lines to go straight down to the deck, outboard sheaves can be used to run lines upward for use in Auto-Reef applications. Includes (4) sheaves, FB3-10, and (4) cams, NBA-14W. Order Horizontal Gooseneck Pin FB3-3A, and appropriate FB Toggle, separately.
*FB-3400 Gooseneck for Single-Line Reefing w/ Sheaves & Cams: FB810-1AR-C:*
Cast aluminum Gooseneck Assembly for FB3 Booms incorporates provisions for internal outhaul and topping lift or conventional reef line, and 2 internal Single-Line Reefing reef lines. Two (2) central lines run over delrin sheaves, and down past lever action cams. Two (2) outboard lines run under upper Sheaves and up through slots to sail. Cams can be removed to allow two (2) central lines to go straight down to the deck. Includes (2 each) sheaves, FB3-10, & FB3-10S, and (2) cams, NBA-14W. Order Horizontal Gooseneck Pin FB3-3A, and appropriate FB Toggle, separately.
	FB-3400 Gooseneck Ass'y w/ Sheaves only: FB810-1A: As *FB810-1AC, above, but with sheaves only for applications where lines are cleated on deck. Does not* include Cams which can be added later.
	FB-3400 Gooseneck Casting: FB810-1: Clear anodized Replacement Casting only, as used in all of the FB-3400 Gooseneck Assemblies listed above. Casting extends (maximum) 8 1/8" (205mm) forward of the boom tube. Distance from horizontal Pin hole to boom tube is 6 7/8" (175mm).
	FB3 Horizontal Gooseneck Bolt Ass'y: FB3-3A: Horizontal Gooseneck Pin Assembly is used to attach the FB3400-1 Gooseneck to FB2-414 or FB3-416 Gooseneck Toggle, above. Double-threaded Pin is 14mm (9/16") diameter x 102mm (4") long, and includes locknuts and washers.
	FB3 Eye Nut for German Mainsheet: FB3-3EN: Optional 14mm Eye Nuts are used in place of locknuts on FB3-3A Gooseneck Pin Assembly for use with German style Mainsheet Systems. SS Nut has welded 8mm eye for attachment of Mainsheet Block.
	FB3 Boom Sheave: NG2-4B12: Acetyl Sheave with integral Delrin bushing is 85mm (3 3/8") OD x 20mm (13/16") wide x 12mm (7/16") ID.
	FB3 Boom Sheave, Black: FB3-10B: Molded Black Delrin Sheave is 85mm (3 3/8") OD x 20mm (13/16") wide x 12mm (7/16") ID. As used on FB-810, FB-1700 and FB-3400 Boom ends.
	FB3 Boom Sheave - Heavy-duty Delrin: FB3-10D: Solid turned Delrin Sheave is used in place of NG2-4B12 in Heavy-duty applications. is 80mm (3 1/8") OD x 20mm (13/16") wide x 12mm (7/16") ID. sm80R21-12
	AutoReef Sheave for FB3 Gooseneck: FB3-10S: Turned Delrin Sheave is 60mm (2 3/8") OD x 20mm (13/16") wide x 12mm (7/16") ID. Two (2) Sheaves are used on FB3-12 axle in upper axle hole in the FB3400 Gooseneck for AutoReef applications. sm60R20-12
	Sheave Axle for FB-3400 Gooseneck: FB3-12: SS knurled Sheave Axle pin is 12mm (7/16") diameter x 122mm (4 3/4") long.
	Cam Axle for FB-3400 Gooseneck: FB3-13: SS knurled Cam Axle pin is 10mm (3/8") diameter x 117mm (4 9/16") long.
	*Gooseneck Cam - Wide: NBA-14W:* Gooseneck Cam lever used in FB3400 and larger goosenecks. Anodized extruded aluminum cam measures (max.) 2 3/4" long x 3/4" wide (70 x 19mm), and rides on 10mm (3/8") cam axle.

*Spar Cleat – 6 3/8": NGC-6:* Cast Aluminum Cleat is 160mm (6 3/8") long. Other Cleats have also been used on this boom section, and are listed separately. Other Isomat Cleats.
Exit Plate – Large Snap-in: NG2-7: Large Black plastic Snap-in Exit Plate eliminates line chafe, and accommodates a maximum of 5/8" line. Exit Plate measures 4 1/2" x 1 5/16" (115mm x 34mm), and installs in cut-out 1" x 4 1/4" (26mm x 112mm). Other Exit Plates have also been used on this boom section, and are listed separately. Other Isomat Exit Plates.
AutoReef Internal Shuttle Block: NB2-20: Cast aluminum Shuttle Block incorporates 2 Delrin Roller sheaves. Used in AutoReef single line reefing systems.
Mainsail Shelf Bracket: FB3-MSB: Mainsail Shelf Bracket Assembly is made from 1" OD Aluminum tube. Clear anodized Bracket is (maximum) 16" long x 6" high, and projects 9 1/2" from boom. Mounts w/ (9) 1/4" screws.

FB-3400 Boom Bails The FB-3400 Boom is designed for use with NB2 and FB3 Boom and Vang Bails, detailed below.
NB2 Boom Bail Ass'y: NB2-15A: SS Articulating Boom Bail fits in integral slot in underside of FB-3400 and other boom sections. Bail is made from 10mm rod. Formed plate is 3.2mm thick and measures 4 3/4" (120mm) long x 1 3/16" (30mm) wide. Fastens with (2) 1/4" (6mm) rivets.
	NB2 Boom Bail: NB2-15R: SS formed rod bail only, as used in NB2 Boom Bail Assembly NB2-15A, above. Bail is made from 10mm (3/8") rod, and is 2 3/4" (70mm) long x (maximum) 1 15/16" (50mm) high.
	NB2 Boom Bail Plate: NB2-15BP: SS formed plate only, as used in NB2-15A Boom Bail Assemblies. Plate is 3.2mm thick and measures 4 3/4" (120mm) long x 1 3/16" (30mm) wide. Fastens with (2) 1/4" rivets.
NB2 Boom Bail Ass'y - Heavy-duty: NB2-15AW: As NB2-15A (above), but Bail is reinforced with a welded crossbar. This heavy-duty option prevents the bail from compressing in extreme circumstances and is used primarily on larger boats.
	NB2 Heavy-duty Boom Bail: NB2-15RW: SS formed rod Bail only, reinforced with a welded crossbar as used in NB2 Heavy-duty Boom Bail Assembly NB2-15AW, above. Bail is made from 10mm (3/8") rod, and is 2 3/4" (70mm) long x (maximum) 1 15/16" (50mm) high.
FB3 Heavy-duty Fixed Mainsheet Bail: FB3-15T: Heavy-duty Fixed mainsheet Bail has a 22mm (7/8") hole for Block attachment. Heavy-duty triangle is 8mm (5/16") thick, welded to 4mm slide plate. Unit is 6 1/4" (160mm) long x 1 3/16" (30mm) wide and fastens with (4) 1/4" rivets. As used on Catalina 440, 470, Island Packet 440, 445, 465, 485, Tartan 4400, and others.
FB3 Heavy-duty Cast Mainsheet Bail: FB3-15TC: Cast Heavy-duty Fixed mainsheet Bail has large slot (24x12mm) for Block attachment. Smooth, cast, burr-free Bail is ideal for use with strop blocks and soft shackles. Base Plate is 10mm thick, unit is 6 1/4" (160mm) long x 1 3/16" (30mm) wide and fastens with (4) 1/4" rivets.

*NB2 Boom Vang Lug for 1/2" Pin: NB2-16-12:* SS Boom Vang Attachment Lug fits in integral slot in underside of NB2 and FB2 Boom sections and has 1/2" (12.6mm) hole for attachment of Vangs from a variety of manufacturers. Slide plate (3mm) is 6 1/2" long, and is welded to 5mm (3/16") thick Triangle, hole center is 32mm (1 1/4") from Boom bottom. Unit slides into track and fastens with (4) 1/4" (6mm) rivets. Used with NG1 Isovang, and a variety of others.

*NB2 Boom Vang Lug for 14mm Pin - Pneuvang: NB2-16-14C:*
Heavy-duty Cast SS Boom Vang Attachment Lug fits in integral slot in underside of NB2 and FB2 Boom sections and has 14mm (9/16") hole for attachment of Sparcraft Pneuvang, Size 4 and smaller. Investment Cast SS Vang Attachment Lug is 255mm (10") long x 29mm (maximum) wide, hole center is 38mm (1 1/2") from Boom bottom, Lug is 6.4mm wide at Pin hole. Unit slides into track and fastens with (6) 1/4" (6mm) rivets.
*NB2 Boom Vang Lug for 14mm - Pneuvang #5: NB2-16-145C:*
Heavy-duty Cast SS Boom Vang Attachment Lug fits in integral slot in underside of NB2 and FB2 & FB3 Boom sections and has 14mm (9/16") hole with wide Lug for attachment of Sparcraft Pneuvang, Size 5. Investment Cast SS Vang Attachment Lug is 255mm (10") long x 29mm (maximum) wide, hole center is 38mm (1 1/2") from Boom bottom, Lug is 8mm wide at Pin hole. Unit slides into track and fastens with (6) 1/4" (6mm) rivets.

*NB2 Boom Vang Lug for 5/8" (16mm) Pin: NB2-16-16:* SS Boom Vang Attachment Lug fits in integral slot in underside of NB2 and FB2 & FB3 Boom sections and has 5/8" (16mm) hole for attachment of Vangs from a variety of manufacturers. Slide plate (3mm) is 6 1/2" long, and is welded to 5mm (3/16") thick Triangle, hole center is 32mm (1 1/4") from Boom bottom. Unit slides into track and fastens with (4) 1/4" (6mm) rivets.
*FB3 Boom Vang Lug for 5/8" (16mm) Pin: FB3-16-16:* Heavy-duty SS Boom Vang Attachment Lug has a 5/8" (16mm) hole in a 5mm (3/16") thick triangle welded *through* 5mm slide plate specially milled to fit integral slot in underside of NB2 and FB2 & FB3 Boom sections. Unit is 10" (255mm) long x 1 3/16" (30mm) wide, hole center is 32mm (1 1/4") from Boom bottom. Lug slides into track and fastens with (6) 1/4" (6mm) rivets. As used with Sparcraft Pneuvang and others.

*NB2 Boom Vang Lug for 22mm (7/8") Pin: FB3-16C-22:* Heavy-duty Cast SS Boom Vang Attachment Lug fits in integral slot in underside of NB2 and FB2 & FB3 Boom sections and has 22mm (7/8") hole for attachment of NG2 Isovang. Investment Cast SS Vang Attachment Lug is 255mm (10") long x 29mm (maximum) wide, hole center is 65mm (2 1/2") from Boom bottom. Unit slides into track and fastens with (6) 1/4" (6mm) rivets. Longer, stronger Cast unit replaces earlier welded version, NB2-16-22.

Outhaul Cars Sparcraft Booms sometimes use an Outhaul Car that fits in its' integral Track, listed below. Note that Booms used with Furling Masts sometimes use upgraded Outhaul Systems with special Track and Ball-bearing Outhaul Cars, See: Sparcraft Booms for Furling Masts.
NB2 Outhaul Car: NB2-18A: SS Outhaul Car Assembly is 92mm (3 5/8") long. Car rides on 4 delrin wheels and features a 12mm (7/16") clew attachment pin and a 10mm (3/8") pin for attachment of the outhaul pennant.
	NB2 Outhaul Car Wheel: NB2-18W: Delrin Wheel for NB2 Outhaul Car is 19mm (3/4") OD x 10mm (3/8") wide x 10mm (3/8") ID.
	NB2 Outhaul Car Axle: NB2-18X: SS Outhaul Car Axle is 10mm (3/8") OD x 24mm (15/16") long.

FB2 Outhaul Car, Short: FB2-18AS: Aluminum Outhaul Car Assembly is 100mm (4") long. Car rides on 4 Torlon rods to minimize friction, and features a 8mm (5/16") removable shackle for attachment of the clew and outhaul pennant.
	Torlon Rods for FB2 Short Outhaul Car: FB2-18ASR: Torlon Rod Set for Short FB2 Outhaul Car includes (4) 6.5mm Torlon rods x 100mm (4") long.
FB2 Outhaul Car, Short - Double: FB2-18ASD: Heavy-duty Outhaul Car Assembly is 230mm (9") long. Car consists of (2) FB2-18AS Short Outhaul Cars, above, joined with a SS coupler, and features a 16mm (5/8") Pin for attachment of the clew and an 14mm (9/16") Pin for attachment of the outhaul pennant.
	FB2 Short Outhaul Car Coupler: FB2-18DC: Heavy-duty SS Coupler Assembly is used to connect two FB2-18AS Outhaul Cars, above, for high load applications. SS Coupler Assembly attaches to Car shackles with 12mm (7/16") Pins, and features a 16mm (5/8") Pin for attachment of the clew and a 14mm (9/16") Pin for attachment of the outhaul pennant. Heavy-duty welded SS Channel is made from 5mm stock and is 230mm (9") long x 36mm (1 7/16") wide.
FB2 Outhaul Car, Long: FB2-18AL: Aluminum Outhaul Car Assembly is 150mm (6") long. Car rides on 4 Torlon rods to minimize friction, and features a 8mm (5/16") shackle for attachment of the clew and outhaul pennant. This item is no longer available and is shown here for identification only.
	Torlon Rods for FB2 Long Outhaul Car: FB2-18ALR: Torlon Rod Set for Long FB-2 Outhaul Car includes (4) 6.5mm Torlon rods x 150mm (6") long.

FB-3400 Outhaul Ass'y Complete: FB810-2A: Cast aluminum Outhaul Assembly for FB3 Booms incorporates provisions for internal outhaul and 3 internal reef lines. Assembly includes (4) Sheaves, NG2-4B12, and 12mm knurled sheave axle. Bail on aft upper side allows for topping lift attachment. Unit projects (maximum) 5 1/2" (140mm) from tube end.
	FB-3400 Outhaul Casting: FB810-2: Clear anodized replacement Casting only, as used in the FB-3400 Outhaul Assembly, above.
	FB3 Boom Sheave: NG2-4B12: Acetyl Sheave with integral Delrin bushing is 85mm (3 3/8") OD x 20mm (13/16") wide x 12mm (7/16") ID.
	FB3 Boom Sheave, Black: FB3-10B: Molded Black Delrin Sheave is 85mm (3 3/8") OD x 20mm (13/16") wide x 12mm (7/16") ID. As used on FB-810, FB-1700 and FB-3400 Boom ends.
	FB3 Boom Sheave - Heavy-duty Delrin: FB3-10D: Solid turned Delrin Sheave is used in place of NG2-4B12 in Heavy-duty applications. Sheave is 80mm (3 1/8") OD x 20mm (13/16") wide x 12mm (7/16") ID. sm80R21-12
	Sheave Axle for FB-3400 Outhaul: FB3-13L: SS knurled Sheave Axle pin is 12mm (7/16") diameter x 117mm (4 9/16") long.

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Spars, Rigging, and Hardware for Sailboats

Sparcraft FB-3400 Boom Measurements (OD): 10 7/8" x 5 1/8" (276mm x 130mm) Wall Thickness: .140" (3.6mm) Weight/ft.: 5.84 lbs. Weight/M: 8.71 kg Moments of inertia: Ixx = 78.81", Iyy = 17.42" Moments of inertia: Ixx = 3280cm4, Iyy = 725cm4 Circumference: 28 1/2" (724mm) Sail slides: 1/2" round slugs (A018, A118) or 1/2" boltrope Lower Track: 31mm x 4.8mm (1 7/32" x 3/16") Alloy: 6005-T6 Standard Lengths: 29' 6" (9M) Common Boom usage F3400: Beneteau 57, Oceanis 523; Clipper 54; Gulet 24MK; JV 51, 53, 54, 59; Koopman 18.6; Kreuzer Cat 14.4; Lagoon ; Nissen 50; Tartan ; Tayana 64*; and numerous larger Catamarans.


FB-3400 Boom Section FB-3400 Boom Section is stocked in a variety of lengths fully anodized. Sections can be ordered bare (unmachined), or cut to shorter lengths with or without milling for other components. Painted finishes and other lengths are available on special order. If you require a complete Boom Assembly, select from components below and contact us with specifications. If you require components not listed below please contact us with details. All FB-3400 Boom Ends have provisions for 4 internal lines. Note that Booms used with Furling Masts sometimes use upgraded Outhaul Systems with special Track and Ball-bearing Outhaul Cars, See: Booms for Furling Masts.

FB-3400 Boom - Mast Attachment Components FB-3400 Booms are connected to a variety of Mast Sections using only a different Toggle to allow for attachment to two sizes of Gooseneck Brackets, detailed below.