Stainless Steel Capped Composite Thru-Hulls

Attwood


Regular price $ 27.50

Lifetime Warranty

See Chart Below on Sizes for Part Number

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 11/4" 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: Thru-Hull connectors are designed for installation above the water line only.

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 Part Number
Thru-Hulls, Standard Length         
5/8" I.D. 1-7/8"  1.29"  1.54"  1"  3.36"  1-3/8"  1.40"  68555-1 
3/4" I.D. 1-7/8"   1.29"   1.54" 1"  3"  1-5/16"  1.40"   68554-1 
1" I.D. 1-7/8"   1.29"  1.54"   1"  3"  1-5/16"  1.40"   68556-1 
1-1/8" I.D. 1-7/8" 1.29"  1.54"   1.32"   2-7/8" 1-5/16"  1.40"   68557-1 
1-1/4" I.D. 2-3/8"  1.55"  1.54"   1.6"  3.96"  1-1/2"  1.40"   68550-1 
1-1/2" I.D. 2-3/8"   1.55"   1.54"   1.6"  6.09"  1-5/16"  1.40"   68551-1 
2" I.D. 3-1/4"  2.16"  2.09"  1.96"  4.94"  2-1/8"  1.80"   68552-1 
Thru-Hulls, Long Length         
5/8" I.D. 1-7/8"  1.29"  1.60"  1.27"  3.48"  1-3/8"  1.40"   68576-1 
3/4" I.D. 1-7/8"  1.29" 1.60"   1.27"  3.48"  1-3/8"  1.40"   68577-1 
1" I.D. 1-7/8"  1.29"  1.60"   0.75"  3.48  2.76"  1.40"   68582-1 
1-1/8" I.D. 1-7/8"  1.29"  1.60"   1.27"  3.75"  1-3/8"  1.40"   68578-1 
1-1/8" I.D. 1-7/8"  1.29"  1.60"   1.5"  3.75"  1-3/8"  1.40"   68579-1   
1-1/4" I.D. 2-3/8"  1.55"   1.54"  1.5"  3.92"  1-1/2"  1.40" 68580-1 
2" I.D. 2-3/8"  1.55"   1.54"  1.5"  3.92"  1-1/2"  1.40"   68581-1 
Scupper Valve         
I.D.  3-1/4" 2.16"  2.09"  1.96"  4.94"  2-1/8"  1.80"   68590-1 

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