Attwood Marine 98085QG Stainless Steel Thru-Hull Short Straight Barbed – 1 Inch Inner Diameter User Guide
Stainless Steel Thru-Hulls & Scupper Valve Fittings
Polish your image with these beautiful, durable stainless steel fittings. Each Thru-Hull and Scupper Valve is available with a new silicone gasket and are backed by Attwood’s trusted Lifetime Warranty! Why specify plastic parts when these fittings will last the life of the boat?
Rugged Stainless Construction
- Cast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance
- We polish all visible areas to a mirror finish, then passivate each part for additional protection
- Thick steel sidewalls withstand continual stress and hose flexing.
Faster, Simpler Installation
- A channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal
- All models have wrench flats or an end notch to hold as a gripping surface. One installer can tighten all connections from inside the hull
- Barbed tail ends provide plenty of room to hold multiple clamps
Stainless Steel Straight Thru-Hulls, Barbed
- Standard Thread model has full-length thread for thick hulls and easy tightening
- Short Thread is a more compact size. Allows installation near corners and in confined areas.
Caution: Stainless Steel Scupper Valves are designed for installation above the water line only.
| A Hose Size | B Flange Dia. | C Thread O.D. | D Thread Lengt | E Barb Length | F Total Length | Install. Hole Saw Siz | hread NPSM | Max Hull Thick. | OEM Part # without Gas | Part |
| Short Length | ||||||||||
| 5/8″ I.D. | 1-7/8″ | 1″ | 1″ | 1″ | 2-1/4″ | 1-1/8″ | 3/4″ | 5/8″ | 66540-1 | 66540-3 |
| 3/4″ I.D. | 1-7/8″ | 1″ | 1″ | 1″ | 2-1/2″ | 1-1/8″ | 3/4″ | 5/8″ | 66541-1 | 66541-3 |
| 1″ I.D. | 2-1/4″ | 1-3/8″ | 1-1/8″ | 1″ | 2-1/2″ | 1-1/2″ | 1″ | 5/8″ | 66542-1 | 66542-3 |
| 1-1/8″ I.D. | 2-1/4″ | 1-3/8″ | 1-1/4″ | 1″ | 2-1/2″ | 1-1/2″ | 1″ | 5/8″ | 66543-1 | 66543-3 |
| 1-1/4″ I.D. | 2-1/4″ | 1-5/8″ | 1-1/4″ | 1″ | 2-5/8″ | 1-3/4″ | 1-1/4″ | 5/8″ | 66544-1 | 66544-3 |
| 1-1/2″ I.D. | 3″ | 1-7/8″ | 1-1/4″ | 1-1/2″ | 3-1/8″ | 2″ | 1-1/2″ | 5/8″ | 66545-1 | 66545-3 |
| Standard Length | ||||||||||
| 5/8″ I.D. | 1-7/8″ | 1″ | 2″ | 1-1/4″ | 3-3/4″ | 1-1/8″ | 3/4″ | 1-1/16″ | 66546-1 | 66546-3 |
| 3/4″ I.D. | 1-7/8″ | 1″ | 2″ | 1-1/4″ | 3-3/4″ | 1-1/8″ | 3/4″ | 1-5/8″ | 66547-1 | 66547-3 |
| 1″ I.D. | 2-1/4″ | 1-3/8″ | 2-1/4″ | 1-1/4″ | 3-7/8″ | 1-1/2″ | 1″ | 1-3/4″ | 66548-1 | 66548-3 |
| 1-1/8″ I.D. | 2-1/4″ | 1-3/8″ | 2-3/8″ | 1-1/4″ | 3-7/8″ | 1-1/4″ | 1″ | 1-3/4″ | 66549-1 | 66549-3 |
| 1-1/4″ I.D. | 2-1/4″ | 1-5/8″ | 2-1/2″ | 1-1/4″ | 4-1/4″ | 1-3/4″ | 1-1/4″ | 1-7/8″ | 66550-1 | 66550-3 |
| 1-1/2″ I.D. | 3″ | 1-7/8″ | 2-1/2″ | 1-1/4″ | 4-1/8″ | 2″ | 1-1/2″ | 1-7/8″ | 66551-1 | 66551-3 |
| 2″ I.D. | 3″ | 2-3/8″ | 2-1/2″ | 1-3/4″ | 4-5/8″ | 2-1/2″ | 1-1/2″ | 2″ | 66552-1 | — |
- 66540G
- 66542
- 66546G
- 66548
attwoodmarine.com
