Description
GROCO 1-1/4" Combo Bronze Thru-Hull w/Nut | Boat Supply Store
For new installations or repairs requiring versatile thread compatibility, this C83600 bronze thru-hull fitting ensures robust and corrosion-resistant integration into your vessel's plumbing system. It features a precisely machined 1-1/4" NPSM/NPT combination thread, allowing for connection with either straight or tapered pipe fittings, and is UL Listed 647B for assured safety and performance in harsh marine environments. Essential for maintaining bilge pump discharges, raw water intakes, or drain systems on offshore fishing boats operating in the Gulf of Mexico.
Key Features
- Durable C83600 Bronze construction resists saltwater corrosion
- Versatile NPSM / NPT combination thread for wider fitting compatibility
- Standard 1-1/4" size for common marine applications
- Certified UL Listed 647B for verified safety and performance
- Complete Includes a securing nut for immediate installation
- Reliable Engineered by GROCO for demanding marine conditions
- Corrosion-Resistant Ideal for wet, saline environments
- Seaworthy Built to withstand vessel movement and pressure
Specifications
| Product Specifications | |
|---|---|
| Size | 1-1/4" |
| Thread Type | NPSM / NPT Combo |
| Material | C83600 Bronze |
| UL Listing | UL Listed 647B |
| Model Suffix | Available with nut (-W) or without nut (-L) |
Who This Is For
Boat owners and marine mechanics undertaking plumbing installations or repairs requiring a durable, corrosion-resistant 1-1/4" bronze thru-hull fitting with adaptable NPSM and NPT thread connections. This fitting is suitable for DIY enthusiasts and professionals alike seeking a certified and reliable component for their vessel's water systems.
How It Compares
| Feature | GROCO 1-1/4" Combo Bronze Thru-Hull w/Nut | Perko |
|---|---|---|
| Thread Type | NPSM / NPT Combination | NPT |
| Thread Type | NPSM / NPT Combination | NPT |
| Material | C83600 Bronze | Bronze |
| Material | C83600 Bronze | Bronze |
| UL Listing | UL Listed 647B | Not Specified |
| UL Listing | UL Listed 647B | Not Specified |
| Size | 1-1/4" | 1-1/4" |
| Size | 1-1/4" | 1-1/4" |
Common Concerns Answered
Is this fitting more expensive than simpler options?
While the GROCO TH-1250-W may be priced higher than NPT-only fittings, its C83600 bronze construction and dual NPSM/NPT thread compatibility offer superior durability and installation flexibility, representing a long-term value for critical marine plumbing.
Are all sizes and thread types readily available?
It is advisable to confirm specific size and thread type availability for your project needs. The GROCO TH-1250-W is offered in 1-1/4" with a combo NPSM/NPT thread, and variations may exist for other models.
How does the price compare to competitors?
The $49.99 price point for the GROCO TH-1250-W is competitive within the premium bronze thru-hull fitting market, offering advanced features like dual thread compatibility and UL certification that may justify a slightly higher cost compared to basic NPT-only alternatives.
Frequently Asked Questions
What is the thread type of the GROCO TH-1250-W thru-hull fitting?
The GROCO TH-1250-W features a combination NPSM (National Pipe Straight Mechanical) and NPT (National Pipe Taper) thread.
What material is the GROCO TH-1250-W thru-hull fitting made from?
This thru-hull fitting is constructed from C83600 Bronze, a high-quality alloy known for its excellent corrosion resistance in marine environments.
What is the size of the GROCO TH-1250-W thru-hull fitting?
The GROCO TH-1250-W has a nominal size of 1-1/4 inches.
Is the GROCO TH-1250-W thru-hull fitting UL listed?
Yes, the GROCO TH-1250-W is UL Listed under certification number 647B.
What is the difference between the -W and -L models of this GROCO thru-hull fitting?
The '-W' designation indicates that the fitting includes a securing nut, while the '-L' designation signifies that the fitting is supplied without a nut.
