AN Male to Imperial Male Restricted Adapters - Stainless Steel

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£16.56

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AN Male to Imperial Male Restricted Adapters - Stainless Steel

Control fluid flow between two different connection standards with our AN Male to Imperial Male Restricted Adapters - Stainless Steel. Each adapter combines an AN4 7/16"-20 UNF convex male connection with a 7/16"-24 concave male connection and incorporates a precision restriction through the adapter.

Why Choose Our Stainless Steel Restricted Adapters?

Integrated Flow Restriction

Available with a 0.7 mm, 1.0 mm or 1.2 mm internal restriction for applications where the flow of fluid through the connection needs to be limited.
AN4 to 7/16"-24 Connection

Converts from an AN4 7/16"-20 UNF convex male connection to a 7/16"-24 concave male connection while maintaining a compact in-line installation.
Convex and Concave Sealing Seats

Both connections seal against their corresponding mating seats rather than on the straight threads.
303/304 Stainless Steel

Offers excellent strength and durability for demanding automotive and motorsport applications.
Natural Stainless Steel Finish

The corrosion-resistant natural finish provides a clean, durable connection without an additional coating.
Precision CNC Machined in the UK

Manufactured in the United Kingdom for accurate threads, sealing surfaces and restriction sizes.

Choose the Correct Restriction for Your Application

The restriction controls the amount of fluid that can pass through the adapter, so the correct size depends on the requirements of the component and fluid system. Always follow the component manufacturer's flow or restriction requirements rather than selecting a restriction by thread size alone.

Adapter Type: AN Male to Imperial Male Restricted Adapter Integrated flow restriction
Material: 303/304 Stainless Steel Excellent strength and durability
Finish: Natural Stainless Steel Corrosion-resistant
Manufactured In: United Kingdom Precision CNC machined

Connection 1: AN4 Male - Convex 7/16"-20 UNF thread
Connection 2: 7/16"-24 Male - Concave Imperial straight thread
Sealing Method: Mating Seat Threads provide retention rather than the fluid seal

Restriction Type: Fixed Internal Restriction Limits fluid flow through the adapter
Available Sizes: 0.7 mm / 1.0 mm / 1.2 mm Select according to the requirements of the component and application

Available stainless steel AN male to imperial male restricted adapters
Product Code	AN Connection	Imperial Connection	Restriction
ADP-MM-AN-IMP-RES-SS-AN4CVX-716X24CCV-07	7/16"-20 UNF Convex Male AN4	7/16"-24 Concave Male	0.7 mm
ADP-MM-AN-IMP-RES-SS-AN4CVX-716X24CCV-10	7/16"-20 UNF Convex Male AN4	7/16"-24 Concave Male	1.0 mm
ADP-MM-AN-IMP-RES-SS-AN4CVX-716X24CCV-12	7/16"-20 UNF Convex Male AN4	7/16"-24 Concave Male	1.2 mm

Select the restriction to suit the application. The required restriction depends on the component and fluid system. Always follow the component manufacturer's requirements where specified.

Turbo Oil Feeds
Oil Systems
Fuel Systems
Flow-Control Applications
Custom Hose Installations

Free repair or replacement for two years from the date of purchase. Learn more

Frequently Asked Questions

What is a restricted adapter used for?
A restricted adapter incorporates a smaller internal passage to limit fluid flow through the connection. The required restriction size depends on the component and application.
What restriction sizes are available?
Choose from 0.7 mm, 1.0 mm or 1.2 mm internal restrictions.
Which restriction size should I choose?
Use the restriction specified for the component and application. A smaller restriction limits flow more than a larger restriction, but the correct size should be determined by the requirements of the system rather than the connection size alone.
What connections do these adapters have?
One end has an AN4 7/16"-20 UNF convex male connection and the other has a 7/16"-24 concave male connection.
Is the 7/16"-24 connection AN4?
No. AN4 uses a 7/16"-20 UNF thread. The 7/16"-24 connection has a different thread pitch and the two should not be confused or interchanged.
How do the connections seal?
The straight threads provide retention while the convex and concave mating seats provide the fluid seal.
Do I need thread sealant?
No. Thread sealant should not be required because these connections seal against their mating seats rather than on the straight threads.
Can these be used as turbo oil restrictors?
They can be used in a compatible fluid system where an in-line restriction of the specified size is required. For turbocharger oil feeds, always use the restriction specified by the turbocharger manufacturer for the particular turbo, oil pressure and installation.
What are the adapters made from?
They are precision CNC machined from 303/304 stainless steel for excellent strength and durability.
Where are these adapters manufactured?
They are precision CNC machined in the United Kingdom.