Description
Milton 604 3/8″ MNPT × 1/2″ Hose Barb Swivel End is a high-quality brass swivel-end hose fitting designed for professional pneumatic systems. Featuring a 3/8″ male NPT thread and a 1/2″ internal hose barb, the Milton 604 3/8″ MNPT × 1/2″ Hose Barb Swivel End delivers durable, secure hose connections ideal for air compressors, reels, and shop environments.
Constructed from precision-machined brass with a swivel design, the Milton 604 3/8″ MNPT × 1/2″ Hose Barb Swivel End allows the hose to rotate under pressure, reducing kinks and extending hose life. This swivel-end fitting provides convenience during tool changes and data air-line routing.
Designed for use with ½″ I.D. rubber or thermoplastic hoses, the barb provides a tight grip—securely sealed with a ferrule or clamp for leak-tight service. The bronze brass construction resists corrosion and wear in demanding conditions, ideal for daily shop use.
H2 Key Features
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3/8″ male NPT thread screws into hoses or tool manifolds 
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1/2″ internal barb grips hose ID securely 
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Brass construction resists corrosion and heat 
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Swivel design gives 360° rotation to prevent kinks 
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Compact: ~1.76″ length, 0.07 lb per fitting 
H2 Technical Specifications
| Feature | Specification | 
| Model | 604 | 
| Thread | 3/8″ male NPT | 
| Hose Barb I.D. | 1/2″ | 
| Material | Machined brass | 
| Connection Style | Swivel hose barb end | 
| Overall Length | ~1.76 in (~4.5 cm) | 
| Weight | ~0.07 lb (~32 g) | 
| Origin | Made in USA | 
 
 
H2 Applications
Use the Milton 604 3/8″ MNPT × 1/2″ Hose Barb Swivel End for:
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Custom shop air hoses and compressor whip assemblies 
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Quick-release tool connections on reels and carts 
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Navigation between compressor, regulator, or lubrication units 
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OEM machinery requiring replaceable hose components 
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Portable repair kits and service carts 
H2 Installation & Maintenance
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Slide hose onto barb—use heat if needed for stiff hoses. 
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Secure with clamp or crimp ferrule for leak-tight seal. 
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Thread 3/8″ NPT end into your system; tighten with wrench. 
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Rotate swivel to align hose; check for twisting. 
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Periodically inspect for wear; replace when brass shows kinks. 
H2 Benefits
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Swivel design extends hose life and prevents kinks 
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Robust brass handles shop conditions 
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Secure grip with or without clamps 
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Standard 3/8″ NPT fits popular air tools and regulators 
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Lightweight and compact—easy to stock and transport 
H2 Why Choose Milton 604?
Backed by Milton’s reputation, the Milton 604 3/8″ MNPT × 1/2″ Hose Barb Swivel End offers premium solid brass structure, convenient swivel performance, and secure hose connection, making it a staple for professionals seeking reliable pneumatic hose assemblies.
 
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