Great Midwest Yacht
sail boat
sail boat

MASTS

Great Midwest masts
 

Black or silver anodized. Includes diamond stays, butt casting, mast cap, gooseneck, spinnaker pole ring, hardware for side-exit main halyard. Does not include forestay or shrouds

Fully rigged 

- includes rope-to-wire main and jib halyards, 5/32" spinnaker halyard, six spreaders with end bolts, wire-hung topping lift block

black anodized

GF100
$1395.00

silver anodized

GF101
$1395.00
Kit mast 

- install your own main and jib halyards, spreaders, topping lift block

black anodized

GF105
$1125.00

silver anodized

GF106
$1125.00

Mast hardware - structural
 

Spreaders, diamonds, spreader sockets. The most commonly replaced mast items

Diamonds 

- full-hard stainless steeel wire, curved stainless steel tangs

set of six

GC110
$106.80

upper (pair)

GF113
$35.60

middle (pair)

GF112
$35.60

lower (pair)

GF111
$35.60
Spreaders 

- 3/8" OD quarter-hard stainless tubing (off-the-shelf tubing is way too bendy)

set of six - 2pc 12 " and 4pc 9" Includes 6 end adjustment bolts

GC120-1
$109.25

set of six - 2pc 12" and 4pc 9"

GC120
$102.00

upper - 12", each

GE122
$17.00

middle or lower - 9", each

GE121
$17.00
Spreader end bolts 

- 1/4-20 bolt and adjusting nut, set of six

GC125
$5.25
Spreader socket 

- thin-wall stainless steel tubing. Supports spreaders and anchors shroud and diamond tangs. Lengths are different for each spreader location

set of three

GC150
$32.00

upper

GE152
$11.00

middle

GE151
$11.00

lower

GE150
$11.00
Spreader socket installation tools 

- large-diameter steel ball (anvil) and steel punch to start flaring of socket

GC140
$20.50

Mast hardware - stainless
 

Halyard hook kit 

- mounts on side of mast. Used with rope-to-wire halyards to hook ball to mast and protect exit hole in mast from wearing. Includes fasteners. Can be used on gold masts with main or jib halyards with rope-to-wire splice.

GF115
$8.20

exit plate with fasteners, mast mounted

GC103
$4.95

halyard hook with fasteners, mast mounted

GC115F
$3.25
Gooseneck assembly 

- for aluminum masts. Bent straps are held to the mast with s/s rivets.

GF116
$29.50
Gooseneck assembly  - for wooden masts. Flat plate screws to mast's aft face.
GB116
$20.80
Gooseneck pin and square 

- replacement fits either wood or aluminum mast. Standard pin is 1 3/4" long to allow easier unshipping of boom

RL1/2
$16.00
Forestay hound 

- holds forestay to mast. Includes fasteners

GB115F
$18.55
Spinnaker pole eye with fasteners 

RF602F
$28.75

Castings
 

Deck plate, flat 

- top and bottom faces are parallel. Internal opening 2 x 3 1/8", includes fasteners

GE101F
$18.30
Deck plate, tapered 

-1/8" front-to-back milled taper to produce mast pre-bend under load, includes fsateners

GE102F
$24.70
Butt casting 

- cast aluminum, for masts without winches. Includes #10 bolt and nut to secure to mast

GB101FA
$22.50

Halyards
 

Halyards - rope-to-wire 

- 3/32" wire spliced to 3/16" line

Main halyard, GMW standard 

- exits side of mast and clips to fixed hook on side of mast. Two swaged balls near splice

GE140
$83.50
Jib halyard, cleats on fwd grating  

- secures with a cam cleat located on forward grating cap aft of mast

GX158
$75.25
Jib halyard, cleats on trunk  

- clips to sliding hook on side of centerboard trunk. One swaged ball near splice. Can be used on any mast

GE158
$76.25
Main halyard, gold mast 

- exits side of mast and clips to fixed hook on mast above gooseneck. Two swaged balls near splice. Requires drilling of mast

GX140
$81.25
Other halyards 

Spinnaker halyard 

- 5/32" prestretch

GB140
$24.50
Main halyard (older masts) 

- 1/16" wire. For gold-anodized or wood masts with winches

GE148
$45.00

Miscellaneous mast parts
 

Sheave boxes 

- cast zinc with nylon sheaves

single sheave. For main halyard

HA5
$16.75

double sheave. For jib & spinnaker halyards

HA7
$24.75
Topping lift hangar assembly 

- 3/32" wire supports Harken block from middle spreader

GF123
$29.20
Mast cap 

- flat aluminum plate,3 legs attach to mast with pop rivets

standard mast

GF122
$12.00

gold mast

GF122X
$15.00