Graco 103605 Gb Coupling Hose
$19.10
In Stock
The Graco 103605 GB Coupling Hose securely connects a 5/16" hose to a 1/4" NPS(f) port, ensuring a leak-free, durable connection for various Graco systems.
- Part Number: 103605 (103-605)
- Connection: 5/16" hose to 1/4" NPS(f)
- Application: Airless sprayers, lubrication & fluid systems
- Material: Metal construction for strength and durability
- Category: Hose Fittings & Connectors
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Hose Coupling Specs & Compatibility
Compatible Machines
General-use hose coupling — verify hose size and thread before ordering- Graco systems using 5/16" hose transitioning to 1/4" NPS(f) thread
- Common across many Graco airless paint sprayer hose assemblies (model-specific confirmation required)
- Suitable for Graco fluid transfer, lubrication, and hose-reel applications with matching sizes
Product Overview
The Graco 103605 GB Coupling Hose is a compact, reliable hose coupling designed to connect a 5/16" hose to a 1/4" NPS(f) threaded port. Using genuine Graco fittings helps maintain system integrity, leak resistance, and performance across spraying and fluid-handling setups.
Key Features
- Genuine Graco coupling for durable, leak-resistant connections
- 5/16" hose side to 1/4" NPS(f) thread interface
- Compact profile for tight installations and quick service swaps
- Compatible with many Graco airless and fluid-handling systems (size match required)
Technical Specifications
| Part Number | 103605 (may appear as 103-605) |
|---|---|
| Type | Hose Coupling / Hose Fitting |
| Hose Side | 5/16" hose (typical) |
| Thread Side | 1/4" NPS(f) – female |
| Material | Metal construction (engineered for fluid systems) |
| Category | Graco Hose Fittings & Connectors |
| Cross-Reference | Bedford Precision 12-301 (for reference) |
Notes on Fitment
- Because this is a general-purpose hose coupling, specific model lists are not always published.
- Confirm your machine’s hose I.D. and receiving thread: 5/16" hose → 1/4" NPS(f).
- Check your unit’s parts manual or exploded view to verify the exact coupling part number.
Installation Tips
- Depressurize the system completely before service.
- Inspect hose end and port threads; replace worn components.
- Tighten to manufacturer-recommended torque; do not overtighten.
- Pressure-test the system and check for leaks after installation.
Frequently Asked Questions
It fits machines whose hose interface is 5/16" hose to 1/4" NPS(f). Check your sprayer’s parts list or hose kit spec to confirm the exact coupling part number.
The female side is 1/4" NPS(f) (National Pipe Straight, female). Verify your port is NPS and not NPT before ordering.
Yes, 103605 is a genuine Graco coupling. A common cross-reference is Bedford Precision 12-301 for comparison.
Depressurize, inspect threads, seat the coupling squarely, tighten to spec, and perform a leak check under working pressure. Replace damaged hoses or ports before reuse.
Choose a coupling that matches your hose I.D. and port thread. Graco offers a range of hose fittings & connectors for other size transitions.
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