T-H Marine is the leading supplier of plastic thru-hull fittings in the U.S.A., recognized for their high-quality materials and innovative designs. These fittings are ideal for OEM boat builders, ensuring durability and a secure fit.
- Standard 90-degree thru-hulls feature a unique finished head and pass-around nut for easier installation.
- Dual nut thru-hulls offer flexibility for various mounting thicknesses and are perfect for topside installations.
- Spaner head thru-hulls allow for convenient installation in hard-to-reach areas by tightening from the top.
Features
T-H Marine – #1 Plastic Thru-Hull Supplier in the U.S.A.
Our molded Thru-Hull fittings are used by more OEM boat builders than any other brand.
All T-H Marine Thru-Hull Fittings are made of the highest quality virgin material to ensure consistent size, extra durability and attractive appearance. All materials are UV stabilized to provide longevity. T-H Marine has worked with major hose manufacturers to guarantee that our hose barbs have the exact specifications to fit hose securely so that your installations will be trouble free.
- STANDARD 90 DEGREE THRU-HULLS- Our standard 90 degree fittings feature a unique finished head and a pass-around nut for easier and more attractive installation, an innovation that T-H Marine developed.
- DUAL NUT THRU-HULLS (TH-90 / TH-92)- Traditional two nut 90 degree fittings. Allows for variety of mounting thicknesses. May be used where installtion must be done from the topside with a traditional nut.
- SPANER HEAD THRU-HULLS, 3/4″ and 111/8″ (TH-7590S, TH-1290S)- For those hard to reach applications that may or may not require low clearance. This spaner head thru-hull allows for installation and tightening from the top with a finished head nut.
| OEM/BULK | Product Name | Packaged |
|---|---|---|
| TH-1590 | Thru Hull – 90 Deg. – 1 1/2″ Hose – Black | TH-1590-DP |
| TH-1592-DP | Thru Hull – 90 Deg. – 1 1/2″ Hose – White | TH-1592-DP |
| TH-1590CP | Thru Hull – 90 Degree – 1-1/2″ Hose – Chrome Plated | TH-1590CP-DP |
| TH-1502S2 | Thru Hull – Blue 90 Deg. – White Head – 1 1/2″ Hose | TH-1502S2-DP |
| TH-1502S2N | Thru Hull – Blue 90 Deg. – White Head – 1 1/2″ Hose – w/ jam nut | TH-1502S2N-DP |
Standard Pack:
OEM – Bulk 50/Box
Distributor Packaged – 12/Box
Specs
| Black Part # | White Part # | Chrome Part # | A | B | C | D (hose) | E |
| TH-1590 | TH-1592 | TH-1590CP | 2-7/8″ | 4-1/4″ | 1-5/8″ | 1-1/2″ | 2″ |
| N/A | TH-1502S2 | N/A | 2-7/8″ | 3″ | 3/4″ | 1-1/2″ | 1-7/8″ |
| N/A | TH-1502S2N | N/A | 2-7/8″ | 3-3/4″ | 3/4″ | 1-1/2″ | 1-7/8″ |




























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