28 WATER SYSTEMS
attwoodmarine.com
Stainless Steel Narrow Flange Thru-Hulls • Consistent exterior appearance throughout a range of barb sizes • Modern styling • Enhanced 316 Stainless Steel Alloy Caution: Stainless Steel Thru-Hull Connectors are designed for installation above the water line only.
67555
Thru-Hull
Scupper Valve
Install. Hole
A Hose Size
B Flange Dia.
C Thread O.D.
D Thread Length
E Barb Length
F Total Length
Max Hull Thick.
OEM Part # without Gasket
Saw Size
Thread NPSM
Part #
67556
Thru-Hulls, Standard Length 5/8" I.D.
67555-1 67554-1 67556-1 67557-1 67551-1 67552-1 67558-1 67561-1 67562-1
1-7/10" 1-3/10" 1-2/5"
1-1/8" 3"
1-5/16" 1" 1-5/16" 1" 1-5/16" 1" 1-5/16" 1"
7/8" 3/4" 7/8" 3/4"
— — — — — — — — —
3/4" I.D.
1-7/10" 1-3/10" 1-3/10" 1-1/4" 3"
1" I.D.
1-7/10" 1-3/10" 1-2/5"
1-1/8" 3"
1-1/8" I.D. 1-7/10" 1-3/10" 1-1/4"
1-1/8" 2-7/8" 1-3/5" 3-2/5"
1-1/2" I.D. 2-2/5"
1-7/8" 1-1/2" 2-3/8" 2.93"
2"
1-1/2" 1"
2" I.D.
3.13"
2.04"
6.09"
2-7/16" 2"
2.70"
Thru-Hulls, Long Length 3/4" I.D.
1-7/10" 1-3/10" 1-1/2"
1-1/8" 4-1/4" 1-1/8" 4-1/4"
1-5/16" 1" 1-5/16" 1"
— — —
67551
1-1/8" I.D. 1-7/10" 1-3/10" 1-1/2"
1-1/2" I.D. 2-2/5" Scupper Valve 1-1/2" I.D. 2-3/5"
1-7/8" 1-1/2"
1-7/16" 4-15/16" 2"
1-1/2"
67553-1
1-7/8" 2"
2"
5-3/4"
2-1/8"
1-1/2" 2-3/4"
—
67553
Stainless Steel Exhaust Thru-Hulls • Specifically designed for generator and engine exhaust applications • Features unique, modern styling that is both elegant and functional • Stainless steel scupper valve and an integrated stainless drip ring • Enhanced 316 Stainless Steel Alloy Caution: Stainless Thru-Hull Connectors are designed for installation above the water line only.
67581
Install. Hole
67582
A Hose Size
B Flange Dia.
C Thread O.D.
D Thread Length
E Barb Length
F Total Length
Max Hull Thick.
OEM Part # without Gasket
Saw Size
Thread NPSM
Part #
2.375" 2" – 11-3/4 1.125" 67581-1 2.375" 2" – 11-3/4 1.125" 67580-1
1-1/2" I.D. 3.18"
2.26" 2.26"
1.6" 1.6"
1.97" 2.23" 2.75"
4.58" 4.58"
— — — —
2" I.D.
3.18"
67583-1 67582-1
2-1/2" I.D. 4.60"
3.375" 1.8" 3.375" 1.8"
5.8" 5.8"
3.625" 3" – 8 3.625" 3" – 8
1.5" 1.5"
3" I.D.
4.60"
3"
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