MetalMast 6641 Mast Section


MM 6641 Mast Section MM 6641 Mast Section - Clear Anodized: RR-X8349CA-___: MM 6641 Mast Section - Raw: RR-X8349R-___: MetalMast MM 6641 Section Mast Tube is stocked in a variety of lengths (listed above) fully anodized or raw (mill finish), it can also be cut to shorter lengths. To order, specify length. Sections can also be milled for the sailgate or other components, painted finishes and other lengths are available on special order, Please specify. If you require a complete Mast Assembly, you can select from components below and contact us with specifications.

MM 6641 Standard Mast Hardware Listed below are parts specific to the MetalMast MM 6641 Mast Section. For more generic parts, see categories listed under Spar Parts. There are many parts for specific configurations that are not listed here. If you require MetalMast MM 6641 Mast Components not listed here please contact us with details.

*SS Masthead Ass'y w/ Tangs & Spinnaker Crane: MM 6641M-H1S:*
SS Masthead Assembly for MM 6641 Mast Section fits over tube end and incorporates (4) 3" OD aluminum sheaves, PP-S10A9-B7, for internal or external wire or rope halyards, and (2) 7/16" Pins for Headstay and Backstay attachment. Includes integral Spinnaker Bail and 1/4" Clevis Pin for attachment of topping lift. Unit also incorporates tangs (with 5/16" Pin holes) for upper shrouds, welded eye for flag halyards, and 5/8" OD x 6" long tube for light attachment. Masthead Assembly is 12" long x (maximum) 7 1/8" wide, and attaches to the mast with (8) 3/16" screws. As used on Pearson 26 and others. PP-21646 30		k
*SS Masthead Ass'y w/ Tangs & Offset Spinnaker Crane: MM 6641M-H1S-OC:*
SS Masthead Assembly for MM 6641 Mast Section fits over tube end and incorporates (4) " OD aluminum sheaves, PP-S10A9-B6, for internal or external wire or rope halyards, and (2) SS Toggles with 5/8" Pins for Headstay and Backstay attachment. Includes 5/16" Clevis Pins for attachment of topping lift and Triatic Stay, and a (Port) Offset Spinnaker Crane pre-drilled for optional Spinnaker Bail, *SP-083, (order separately). Masthead Assembly is 13 1/2" long (excluding Spinnaker Crane) x (maximum) 5 1/16" wide, and attaches to the mast with (4) 1/4" screws. As used on Pearson .* PP-22
*Masthead Ass'y, Single Channel: MM 6641M-H1M-2:* Aluminum Masthead Assembly for MM 6641 Mast Section fits tube end and incorporates (2) 2" OD aluminum sheaves, K-198-8AB6. Two sheaves allow for external Mizzen or internal Mizzen and Mizzen Staysail halyards. Unit features (3) SS bushed holes with 3/8" ID for attachment of Triatic stay, Backstay, and (external) Mizzen Staysail Halyard Block, as well as 1/4" hole for attachment of topping lift. Masthead Assembly is 11 1/8" long x (maximum) 4 1/8" wide, and attaches to the mast with (4) 1/4" screws. As used on Pearson 365K Mizzen, 424K Mizzen, and others. PP-22078SS		k
*Masthead Ass'y for Masthead Rig: MM 6641M-H2A:* Aluminum Masthead Assembly for MM 6641 Mast Section fits tube end and incorporates (4) 2" OD aluminum sheaves, K-10861-B6, for internal or external wire or rope halyards, and (2) SS Toggles with 7/16" Pins for Headstay and Backstay attachment. Includes 5/16" Clevis Pin for attachment of topping lift, and is pre-drilled for optional Spinnaker Bail, *SP-083, (order separately). Masthead Assembly is 10 1/2" long x (maximum) 4 3/8" wide, and attaches to the mast with (4) 1/4" screws. As used on some Pearson 26's*, and others. PP-22022MM
*Masthead Ass'y, Double Channel for Mizzen: MM 6641M-H2AM:* Aluminum Masthead Assembly for MM 6641 Mast Section fits tube end and incorporates up to 4 (2 included) 2" OD aluminum sheaves, K-10861-B6, for internal or external wire or rope halyards, and (2) SS Toggles with 7/16" Pins for Triatic stay and Backstay attachment. Includes 5/16" Clevis Pin for attachment of topping lift. Masthead Assembly is 10 1/2" long x (maximum) 4 3/8" wide, and attaches to the mast with (4) 1/4" screws. As used on Pearson 365K Mizzen, 424K Mizzen, and others. PP-22025MM

Spreaders The MetalMast MM 6641 Mast Section is normally used with SP-091 (1 5/16" OD) Round, and RR SP375 Airfoil Spreaders, common Spreader Bases are listed below. For Spreader details, or to order replacement Spreaders, See Rig-Rite Spreader Sections.
*Cast Spreader Base for 1 5/16" Round Spreader: PP SBR-2018L:* Rectangular Spreader Base for 1 5/16" OD Spreader. Cast Aluminum Spreader Base attaches to Mast with (2) 1/2" bolts on 3 15/16" (or 4") centers, lower bolt is also used to attach lower shroud Tang(s). Spreader is held in socket by 1/8" cotter Pin (included). Unit is 6" long x 3" wide, base is slightly contoured for use with a variety of Mast Sections. As used on Pearson 26, and others.
*SS Spreader Bracket w/ 5/8" Pin: MM 6641M-SB-PY10:*
SS Spreader Bracket Assembly for MM 6641 Mast is used with Rig-Rite SP375 Spreaders. Unit is 3 3/8" high x 3 3/8" wide with a 5-degree vertical lift and attaches to mast with (7) 1/4" RH screws. Bracket features a 5/8" vertical clevis Pin for attachment of Spreader, Spreader is normally supplied with a contoured inboard end with a welded bushing having a 5/8" ID. As used on Pearson 365K and 424K Mizzen Masts.		k

*Hinged Mainsail Gate Assembly: MM MG-H1:* Hinged Mainsail Gate assembly fits a variety of older MetalMast Sections. Gate is (maximum) 1 3/4" high x 2 1/4" wide. Base is 1 3/4" wide x 11/16" high and projects (maximum) 1/2" from Mast surface. Base attaches to Mast with (2) #6 FH screws on 5/16" vertical centers. Extruded Aluminum Gate is easily distinguished from others of its type by the attachment holes being vertical and the fact of its being Extruded. Used on a variety of Spars built in the 1960's through the 1980's.
*Hinged Mainsail Gate Assembly - Pearson: MM MG-HP1:* Special Cast Hinged Mainsail Gate assembly used by Pearson Yachts. Gate is (maximum) 1 3/4" high x 2 7/8" wide. Base is 2 1/8" wide x 1/2" high and projects (maximum) 1/2" from Mast surface. Base attaches to Mast with (2) #10 (3/16") RH screws on 1/2" horizontal centers. Cast Aluminum Gate is secured with a 3/16" fastpin. Factory original, finished in Awlgrip Light Gray. As used on Pearson 365K and 424K Mizzen Masts, and many Pearson 26's.		k
*3/4" Sail Slide Stop: K-10424:* SS Spring Pin Sail Slide Stop fits all mast sections with track for 3/4" internal flat slides. Superior design allows Slide Stop to remain captive in mast track. Gate cutout (1 3/4" high) is made just 1" above SS Gooseneck bracket. Spring pin fits in 1/4" hole drilled at top of cutout, unit slides down beneath Gooseneck Bracket when Spring pin is pulled. This design allows sail slides to come as close as possible to the gooseneck while remaining in track, and eliminates problems associated with slides snagging while going past a normal sail gate. Unit is 2 1/2" long x 3/4" wide with a 1/4" spring pin. 74-66 6106
Gooseneck Bracket: MM 6641M-GB1: SS Gooseneck Bracket for MM 6641 Mast Section has 1/2" vertical Pin hole, for use with standard Gooseneck Toggle up to 2 1/2" high. Base is 5" vertical x approximately 4 3/4" wide, and attaches to the mast with (10) 1/4" RH fasteners. Commonly used with Combination Toggle/Tack/Reef Hook Assembly, RR-8349M-GTA, below. Can also be used as Vang Bracket with addition of Vang Toggle.		RR-8349-GB1
	Vertical Gooseneck Pin: RR 8349M-GB1P: SS Gooseneck Vertical Pin for use with Gooseneck Bracket, *RR-8349M-GB1.* SS Clevis Pin is 1/2" diameter x 3" grip length.
Gooseneck Toggle Assembly w/ Tack & Reef Hooks: RR 8349M-GTA:
Combination Toggle/Tack/Reef Hook assembly features SS Tack/Reef Hook assembly bolted to cast Aluminum Toggle (RR 45-148M-W) and includes 1/2" Tack fastpin, *K-10718.* Toggle takes *1/2" vertical and* horizontal pins. White painted Toggle is 2 5/16" high x 1 3/8" wide (15/16" wide @ Horizontal pin hole) x 3 7/8" (maximum) long, pin holes are on 2 1/2" centers. Toggle fits a variety of Mast Brackets designed for a 2 5/16" Toggle with a 1/2" vertical pin. As used on Sabre 42.** RR 45-148MRAW
	Gooseneck Toggle w/ Recess - 2 5/16" High: RR 45C-148M-W: Cast Aluminum Gooseneck Toggle is 2 5/16" high and accommodates 1/2" vertical and horizontal pins. White painted Toggle is 2 5/16" high x 1 3/8" wide (15/16" wide @ Horizontal pin hole) x 3 7/8" (maximum) long, pin holes are on 2 1/2" centers. Toggle features 2nd 1/2" vertical hole (1 1/4" aft) with milled Recess for non-pivoting attachment of Tack/Reef Hook assembly.
	Large SS Reef Hook/Tack Assembly for 1/2" Vertical Bolt: PP 54-22S:
	Heavy-duty Stainless Steel Reef Hook/Tack Assembly mounts under head of 1/2" Vertical Bolt. Dual Reef Hook Assembly is 3 1/4" wide (at top), 1 3/8" wide (at bottom), 3 1/4" high, and has 1" clearance for Tack. Assembly is formed from 1" x 3/16" SS Strap and includes 1/2" SS Tack Fastpin, K-10718.

Vang Bracket for Rigid Vang – Special: A variety of semi-custom Brackets, or Bracket/Toggle combinations are available to fit rigid (or solid) vangs produced by a number of manufacturers. Please specify vang manufacturer, model and size.
Electrical Access Plate: RR 72-99: Electrical Access Plate is designed to allow access to internal electrical plugs above the mast step, without having to unstep the mast. Saves much in frustration and money by allowing you to check mast wiring connections with the mast up. SS Plate is 4 1/2" x 2" and is designed to cover a 3" x 1 1/4" vertical slot in the side of the mast, just above the top of the mast step. Plate is slightly curved to fit a variety of mast sections and attaches with (4) 1/4-20 RH machine screws (included).
Mast Step: MM 6641M-S1: Mast Step for MetalMast 6641 Oval Mast Section (6.62" x 4.12") fastens to keel or deck and is undrilled to adapt to any mounting hole configuration. Cast Aluminum Mast Step is (maximum) 6 1/4" long x 4 1/8" wide with Light Gray Awlgrip finish. As used on Pearson 26, Pearson 365K and 424K Mizzen Masts, and others.		k
Mast Step: MM 6641M-S26P: Mast Step for MetalMast 6641 Oval Mast Section (6.62" x 4.12") fastens to keel or deck and is undrilled to adapt to any mounting hole configuration. Cast Aluminum Mast Step is (maximum) 7" long x 4 1/2" wide. Unit is marked P-26. Fits MM 6641 Mast Section, and other variations of this section. As used on Pearson 26, and others. PP-22184?		k
Electrical Wire Slide: K-10908: Electrical Wire Slides - 10 Pack: K-10908P: Nylon slides fits MetalMast and other Mast Sections with US standard 1/4" wire slide tracks. Slides are attached to wiring harness at 2-3 foot intervals with tie wraps. Prevents wires from slapping, and from fouling internal halyards.		k

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