AN Bleed Nipples - Stainless Steel

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Rubber Dust Cover Cap +£0.54

£3.30

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AN3 Stainless Steel Bleed Nipple for Brake & Clutch Systems

Our AN3 stainless steel bleed nipple provides a durable and corrosion-resistant solution for bleeding air and old fluid from compatible brake, clutch and hydraulic components.

Precision CNC machined in the UK from 303/304 stainless steel, the nipple features a 3/8"-24 UNF thread commonly referred to as AN3 and is designed for applications requiring this specific bleed nipple thread and dimensions.

Why Choose Our AN Bleed Nipple?

AN3 Thread

Features a 3/8"-24 UNF thread for compatible AN3 threaded brake, clutch and hydraulic components.
Stainless Steel Construction

Manufactured from 303/304 stainless steel for excellent strength, durability and corrosion resistance.
Precision CNC Machined

Manufactured in the UK with precise dimensions for consistent thread engagement and fitment in compatible components.
Suitable for Brake & Clutch Systems

Suitable for compatible brake calipers, master cylinders, clutch cylinders and other hydraulic components using a 3/8"-24 UNF bleed nipple thread.
Optional Dust Cover

Add a bleed nipple dust cover cap to help protect the bleed nipple from dirt, moisture and road debris between servicing.

What Does a Bleed Nipple Do?

A bleed nipple provides a controlled outlet for removing trapped air and old hydraulic fluid from a brake or clutch system. During bleeding, the nipple is opened to allow fluid and air to escape before being closed again to seal the hydraulic circuit.

Check Compatibility Before Ordering

Always confirm the thread and physical dimensions required by your component before ordering. This bleed nipple uses a 3/8"-24 UNF thread and should only be fitted to components designed for the corresponding bleed nipple size and seating arrangement.

Material: 303/304 Stainless Steel Excellent strength and durability
Finish: Natural Stainless Steel Corrosion-resistant
Thread Type: AN3 / 3/8"-24 UNF For compatible AN threaded hydraulic components
Manufactured In: United Kingdom Precision CNC machined

AN3 stainless steel bleed nipple thread and dimensions
Product Code	Thread	Overall Length	Length Below Hex Head	Spanner Size
NIP-SS-AN3	3/8"-24 UNF AN3	30.5mm	17.5mm	10mm

Brake Calipers
Brake Master Cylinders
Clutch Master Cylinders
Clutch Slave Cylinders
Hydraulic Systems

Brake Fluid
Clutch Fluid
Hydraulic Fluid

Bleed Nipple Caps

Helps protect the bleed nipple from dirt, moisture and road debris between servicing.

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

Frequently Asked Questions

What thread does the AN3 bleed nipple use?
The AN3 bleed nipple uses a 3/8"-24 UNF thread.
Where can an AN3 bleed nipple be used?
It can be used with compatible brake, clutch and hydraulic components designed for a 3/8"-24 UNF bleed nipple, including some brake calipers, master cylinders and clutch cylinders.
Is every 3/8"-24 UNF bleed nipple interchangeable?
Not necessarily. The thread must match, but the overall dimensions and sealing arrangement must also be suitable for the component. Always compare the replacement nipple with the original or the component manufacturer's specification.
What is the AN bleed nipple made from?
It is precision CNC machined in the UK from 303/304 stainless steel for excellent strength, durability and corrosion resistance.
What size spanner does the AN3 bleed nipple use?
The AN3 bleed nipple uses a 10mm spanner. It measures 30.5mm overall, with a length of 17.5mm below the hex head.
Do you sell a dust cover for the AN3 bleed nipple?
Yes. Our optional bleed nipple dust cover cap helps protect the nipple from dirt, moisture and road debris between servicing.