WATER SYSTEMS 29
attwoodmarine.com
Stainless Steel Capped Composite Thru-Hulls
Designed for the value conscious customer, these fittings provide the look of a Stainless Steel thru-hull at a fraction of the cost Corrosion Resistance Manufactured with high quality stainless steel caps and engineered composite bodies, these thru-hulls are designed to resist degradation as a result of chemical and saltwater exposure. Consistent Look To create a uniform look, Attwood has designed its 5/8" thru 1-1/2" barbed thru-hulls with a common exterior surface. Improved Installation Always keeping the builder in mind, each fitting incorporates several different types of assembly features that allow for “single operator” installation.
Caution: Stainless Steel Thru-Hull Connectors are designed for installation above the water line only.
B
C
B
C
A
E
Dia. B
D
E
Dia. B
F
A
D
Straight
90°
F
68555
A Hose Size
B Flange Dia.
C Thread O.D.
D Thread Length
E Barb Length
F Total Length
Installation Hole Saw Size
Max Hull Thickness OEM Part # Part #
Thru-Hulls, Straight 5/8" I.D. 1-7/8"
68555-1 68554-1 68556-1 68557-1 68551-1 68576-1 68577-1 68578-1 68579-1 68581-1
1.27" 1.27" 1.27" 1.27"
1.54" 1.54" 1.54" 1.54" 1.54" 1.54" 1.54" 1.54" 1.54" 1.54"
1" 1" 1"
3.39" 3.36" 3.39" 3.36"
1-3/8"
1.30" 1.30" 1.30" 1.30" 1.40" 1.30" 1.30" 1.30" 1.30" 1.30"
— — — — — — — — — —
3/4" I.D.
1-7/8" 1-7/8"
1-5/16" 1-5/16" 1-5/16"
1" I.D.
1-1/8" I.D. 1-7/8" 1-1/2" I.D. 2-3/8" Thru-Hulls, 90º 5/8" I.D.
1.3" 1.6"
1.5"
3"
1-1/2"
1-7/8" 1-7/8" 1-7/8"
1.27" 1.27" 1.27" 1.27"
0.875" 3.48"
1-5/16" 1-5/16" 1-5/16" 1-5/16"
68557
3/4" I.D.
1"
3.48"
1" I.D.
1.125" 3.75"
1-1/8" I.D. 1-7/8" 1-1/2" I.D. 2-3/8"
1.5" 1.5"
3.75" 4.45"
1.5"
1-1/2"
68576
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