# Huge stock | # In house development | Knowledge

without VAT/Customs duty may apply

Information about SPD AN fittings and AN hose.

SPD – The brand

When you see the SPD brand, you can be sure that you get a quality product that is not released on the market before it's tested. SPD products are developed by the Speeding team from start to finish with active drivers and technicians to have up to date products.

The different steps before a product comes on the market:

Idea ->
Drawing ->
Prototypes ->
Testing ->
Manufacturing ->
Final checks->
Finished product->
Stock keeping.

What is AN?

What are AN fittings and AN hose?

AN is an abbreviation of "Army Navy", a US standard derived from World War II. AN uses a 37-degree cone, the same as JIC which is an industry standard. These can be used together but do not provide equally good seal as AN to AN for many reasons, although it works in some applications.

AN measures outer diameter of the hose in 1/16 "step where an1 in theory is 1/16" and an8 is 1/2 "and an16 is 1".

What we focus on is the inner diameter of the hose, angle of the fittings and the design of the press sleeve. The focus of others often lies on the outer diameter (dimension) and to make as cheap product as possible to make profit so the sealing areas suffer.

SPD works a lot with the new technologies available today to get this right from the start and above all consistently throughout the assortment of ALL connectors.

AN fittings

SPD AN fittings come with 5-year warranty.

All fittings are hard anodized, making them highly resistant to external impact. SPD AN fittings are excellent for use with fluids and gas such as gasoline, methanol, ethanol (E85 / E100), diesel, oil, cooling water, steering servo and brake fluid.

Mostly, the fittings are made of aluminum alloy, but we also have stainless steel and "plain steel"

AN fittings are a collective name for the various "building blocks" that match each other. 

SPD has a wide range of AN fittings  and now we will describe the differences: 

Hose ends

There are three main categories for hose ends. One common for hose with rubber core, one for PTFE hose with plastic core and one for Push On rubber hose without outer steel braid.

The hose ends called PTFE fits PTFE AN hose and can not be used for the ordinary hose with rubber core and contrariwise.

The PTFE hose ends also have an olive that surround the plastic hose as a sealing joint. This olive is not reusable but must be replaced if one occasionally disassembles a PTFE hose end from the hose.

All hose ends, both PTFE and standard, have replaceable press sleeves. These are available in different colors.black, red, purple and gold and should not be mixed up with olives. These two work together.

 

Hose ends for hose with rubber core

Hose ends for rubber core AN hose are available in three versions in size AN4-AN20 with associated hose in both steel braided and nylon braided. 

-Hose end

The classic hose end that fits on a rubber core hose to get AN thread that fits the rest of the AN system. 

-Hose end Full flow

Same as above but with bigger inside diameter. A good alternative to standard hose ends if there are many fittings in a system and you want the best flow. Full flow hose ends are often used in oil systems.

-Hose end Forged

Forged hose ends that can withstand tough environments. The body between the press sleeve and the thread is forged and has a more rigid and robust construction. Often, these are used under the car, for example, gearbox and rear diff where it is a tough environment. 

 

Hose ends PTFE for hose with plastic core

Hose ends PTFE for hose that fits  plastic core is also available in three variants from AN3 to AN16 in both steel braid and nylon braid.

-Hose end PTFE

The classic PTFE hose end that fits on a plastic core hose to get AN thread that fits the rest of the AN system. 

-Hose end Full flow PTFE

Same as above but with bigger inside diameter. A good alternative to standard hose ends if there are many fittings in a system and you want the best flow. Full flow hose ends are often used in oil systems.

-Hose end Forged PTFE

Forged PTFE hose ends that can withstand tough environments. The body between the press sleeve and the thread is forged and has a more rigid and robust construction. Often, these are used under the car, for example, gearbox and rear diff where it is a tough environment. 

 

Hose ends for Push On hose

Hose ends Push On avalible in size from AN4-AN12 for rubber hose, called Push On hose. 

If the fuel or liquid gets more than 70 degrees of working temperature, always lock the hose clamp with a Push On AN fitting because the hose expands a bit at higher temperatures. 

Some more categories beloning to to the AN fitting system:

Tube fitting

Adapter

Joint

Plug

Banjo och banjobolt

Quick connection

Bulkhead fitting

Check valve

Weld connection

Pneumatic connection

AN hose

There are different types of AN hoses that are made for different purposes. Below you can read more about the different hoses and which one to choose depending on the application.

SPD AN hose comes with a full 3 year warranty when using the correct hose for the specified application.

The SPD An hose range covers the use of most media such as gasoline, methanol, ethanol (E85 / E100), diesel, oil, cooling water, servo fluid and brake fluid. You choose hose depenging on application. 

AN hose is a collective name for the different hoses available. These can be divided into three groups.

PTFE AN-hose, AN-hose and Push On hose

 

PTFE AN-hose (Plastic core)

Steel braided PTFE hose

The steel braided PTFE hose has a plastic core with two layers of steel braid. This makes the hose very wear resistant. 

Nylon braided PTFE hose

The nylon braided PTFE hose has a plastic core with a layer of steel braid and an outer layer of black nylon braid. This makes the hose lighter and more flexible than a steel braided PTFE hose that has two layers of steel braid. The black nylon spun braid also gives a nice look. 

An hose (Rubber core)

Steel braided hose with rubber core

The steel braided hose has a rubber core with two layers of steel braid. This makes the hose very wear resistant. 

Nylon braided hose with rubber core

The nylon braided hose has a rubber core with a layer of steel braid and an outer layer of black nylon braid. This makes the hose lighter and more flexible than a steel braided hose that has two layers of steel braid. The black nylon spun braid also gives a nice look. 

Push On hose (Rubber hose)

The only? rubber hose that can handle all fuels - eg ethanol (E85).

This hose is also is available in AN5 to fit original barbs in cars and engines that are 8mm.

Push On hose is a flexible hose that is made to fit the push-on hose ends and an fittings, but can also be used with a hose clamp for most applications with barb.

Assembly

N.B

1. Cut the hose wit a plier. NEVER saw the hose as rubber particles will get caught in the hose and later in filters, injectors and fuel pumps with problems as a result.

2. It is important that the steel braid is not caught in the threads between the fitting and press sleeve. It will damage the thread.. 

Hose with rubber core:

1. Pull the press sleeve over the hose.

2. Lubricate the hose opening and push the fitting in to the hose as deep aas you can.

3. Screw the press sleeve and the coupling together using tools. Check that the fitting does not slide out of the hose when assembled. You can mark the hose with a pencil or tape to be sure this will not happen.

Hose with plastic core (PTFE):

1. Pull the press sleeve over the hose.

2. Fold out the outer part of the steel braid with a tool and make sure the opening on the plastic core is round.

3. Slide the olive on the plastic core until it receives the "heel" at the bottom of the olive.

4. Press the entire "pipe" on the an fitting into the hose and press sleeve. Screw the press sleeve and the an fitting together using tools.

N.B

The olive cannot be reused if disassembled.

Who uses SPD AN fittings.

SPD products are found on all types of motor vehicles and are used in all types of motorsport such as drifting, rally, rally cross and track racing. Everything from entry classes to local championship, European championship and World championship level uses SPD products.

The aircraft industry also uses SPD products as they do not want to take any chances with quality.