GROCO THXL-1250-WS Steel Hull Fitting Nut 742985174894 1-1/4

( Brand: Groco ), ( Part Type: Fitting ), ( Manufacturer Part Number: THXL-1250-WS ), ( UPC: 742985174894 )

Review GROCO 1-1/4 Inch Stainless Steel Extra Long Thru hull Fitting Nut

The Groco THxl-1250-WS 1-1/4 inch Steel Thru-Hull Fitting Nut is a crucial component in the plumbing system of boats, ensuring a secure and watertight connection between the thru-hull fitting and the hull. This nut, manufactured by Groco, a leading name in marine plumbing components, is made of robust and durable 1018 steel, ensuring long-lasting performance and resistance to corrosion.

The THxl-1250-WS nut has a 1-1/4 inch thread size, making it suitable for use with various marine plumbing applications. Its smooth, uniform threads ensure easy and reliable installation, while its large, flat bottom provides a stable and secure sealing surface. The nut's corrosion-resistant zinc coating, in compliance with ASTM B633, adds an extra layer of protection against the harsh marine environment.

The Groco THxl-1250-WS nut features a unique, patented design with a built-in gasket retainer, allowing for the installation of the Groco gasket (sold separately) without the need for additional retaining clips. This design simplifies the installation process and eliminates the need for extra hardware, making it a more efficient and cost-effective solution for boat owners.

The nut's large, easy-to-grip knob provides a comfortable and firm grip, allowing for easy and efficient tightening and securing of the thru-hull fitting. Its hexagonal shape ensures that the use of a wrench is not required, enabling the nut to be tightened by hand.

In summary, the Groco THxl-1250-WS 1-1/4 inch Steel Thru-Hull Fitting Nut is a high-quality, corrosion-resistant, and efficient solution for securing thru-hull fittings on boats. Its durable construction, unique design features, and ease of use make it an essential addition to any boat's plumbing system.

The Groco THxl-1250-WS 1-1/4 inch steel thru-hull fitting nut is a common component used in marine applications for securing thru-hull fittings. Here are some pros and cons that may help you make an informed decision before purchasing this product:

1. Durability: This nut is made of heavy-duty steel, making it robust and long-lasting. It can withstand the harsh marine environment and the pressure of water flowing through the thru-hull.

2. Corrosion Resistance: The steel material of this nut is coated with a special zinc-rich epoxy coating that provides excellent protection against corrosion, ensuring the nut maintains its integrity over time.

3. Security: The Groco THxl-1250-WS nut features a heavy-duty, self-aligning, and locking design, which ensures a secure connection between the thru-hull fitting and the hull, preventing any potential leaks.

4. Easy Installation: The nut comes with a large, knurled surface that makes it simple to grip and turn with your hands, making the installation process easier.

5. Versatility: This nut is suitable for a wide range of thru-hull applications, including seacocks, through-hull fittings, and other marine accessories.

1. Weight: Compared to other materials like plastic or brass, steel is denser and heavier, which may make it more difficult to handle and install, especially for those working alone.

2. Cost: The Groco THxl-1250-WS nut is more expensive than other materials, such as plastic or brass, due to its durability and corrosion resistance.

3. Size: The nut has a larger diameter than some other options on the market, which may require you to purchase larger hoses or adapters.

In conclusion, the Groco THxl-1250-WS 1-1/4 inch steel thru-hull fitting nut offers exceptional durability, corrosion resistance, and security compared to other materials. However, it comes with a higher cost and larger size, which may be a disadvantage for some users. If you are looking for a reliable and long-lasting solution for securing your thru-hull fittings, this nut is an excellent investment. Alternatively, if cost and size are a major concern, you may want to consider other materials like plastic or brass.

part # thxl1250 prices

• $62.99-$74.16

specifications vesselvent:

• brand: Groco
• part type: Fitting
• manufacturer part number: THXL-1250-WS
• upc: 742985174894

returns vesselvent:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

payments vesselvent:

• wallet: Google-pay
• credit card: Visa
• other

offer vesselvent:

• options: Ship-to-home
• sold: 0
• started: November 11, 2025
• quantity: 5
• availability: In Stock

shipping vesselvent:

• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• cost: $0.00
• class: Standard
• carrier: FedEx
• transit: 3-6 Days

seller vesselvent:

• rating: 97.8%
• # reviews: 767

general vesselvent:

• condition: New
• Parts Accessories > Boat Parts > Plumbing Ventilation

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