AN919-3D - REDUCER, BOSS

NSN: 4730-00-684-7451, NIIN: 6847451
New Surplus, Sold Per Each

A Reducer, Boss is a threaded fitting used to connect two components with different thread sizes, allowing a larger port to adapt to a smaller one. Commonly used in hydraulic, pneumatic, and fluid systems, it ensures a secure, leak-tight connection while maintaining flow efficiency.

Specifications

Connection Style: Flared (Tube) First End
Connection Style: Flared (Tube) Second End
Connection Type: Threaded External Tube First End
Connection Type: Threaded External Tube Second End
Reducer Type: Concentric
Surface Treatment: Anodize Inside
Surface Treatment: Anodize Outside
Material: Aluminum Alloy
Nominal Overall Length: 1.359"
Seat Angle: 37.0° First End
Seat Angle: 37.0° Second End
Tube Outer Diameter Accomodated: 0.250" Second End
Tube Outer Diameter Accomodated: 0.312" First End
Thread Class: 3A First End
Thread Class: 3A Second End
Thread Series Designator: Unjf All Ends
Thread Size: 0.438" Second End
Thread Size: 0.500" First End

Part Number Info

Part Number: AN919-3D
Unpunctuated: AN9193D
NSN: 4730-00-684-7451
NIIN: 6847451

Potential Alternates: 7M637DA-3D, AA-919D3, 7M637, 1-01236D3, 105-02919-19003, 3117539, 30012D3, 7062-919D3, GA7062-919D3, 111050-919D3, 4730PL0143762, 4730PL1780982, C050-919D3, MS24399D4, 10203239, AS4841, AS5174, AS5174D0504, 5068-919D3, 2428141940, 8161761

Replaces Cancelled NSN: 4730-00-949-1770, 4730-00-187-3577

New Surplus: These parts are classified as new and unused, meaning they have not been installed or placed into service. However, they come without traceability or original manufacturer certifications, which might be required for certain high-level regulatory uses. Our company provides its own Certificate of Conformance (CoC) as a statement of assurance that the parts are in good working condition and have been sourced from reliable channels. These are ideal when the focus is on cost-effectiveness without compromising on quality.

Sold Per Each: This item is sold individually, with the price listed for a single unit. Perfect for purchasing the exact quantity needed without the requirement to buy in bulk. For larger quantities, consider reviewing any available bulk pricing options.

Alternate Part Numbers: Due to the nature of ever-evolving part numbering structure, multiple part numbers may meet the same specifications and performance standards. If only an alternate part number is available, we will contact you to confirm compatibility. We strongly recommend consulting the appropriate repair manuals to ensure accuracy before using an alternate part.

680393

680393 - Spring, NS, Sold Per Each