AN Bulkhead Nuts - Stainless Steel

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AN Stainless Steel Bulkhead Nuts for Panel-Mounted Fittings

Designed for securing compatible AN bulkhead fittings through panels, brackets and firewalls, our AN stainless steel bulkhead nuts provide a strong and durable method of retaining bulkhead fittings in position.

Precision machined from stainless steel for excellent strength and corrosion resistance, they are available in AN3 and AN4 thread sizes for use with compatible AN bulkhead fittings.

Why Choose Our AN Bulkhead Nuts?

Stainless Steel Construction

Manufactured from stainless steel for excellent strength, durability and corrosion resistance in automotive, motorsport and other fluid system applications.
AN3 & AN4 Thread Sizes

Available in two AN thread sizes:
- AN3 – 3/8"-24 UNF
- AN4 – 7/16"-20 UNF
Secure Bulkhead Mounting

Threads onto the rear of a compatible AN bulkhead fitting to clamp it securely against a panel, bracket or firewall.
Compact Installation

Provides a simple mechanical fixing for AN bulkhead fittings where a removable and serviceable panel-mounted connection is required.

What is an AN Bulkhead Nut?

An AN bulkhead nut is used to secure a compatible AN bulkhead fitting through a panel or bracket. The bulkhead fitting passes through the mounting hole and the nut is tightened from the opposite side, clamping the fitting securely against the panel.

Choosing the Correct AN Bulkhead Nut

Choose the nut that matches the AN size of the bulkhead fitting. AN3 uses a 3/8"-24 UNF thread, while AN4 uses a 7/16"-20 UNF thread.

Product Type: Bulkhead Nut For securing compatible AN bulkhead fittings through panels and brackets
Material: Stainless Steel Strong, durable and corrosion-resistant
Thread Type: AN / UNF Available in AN3 and AN4

Available AN stainless steel bulkhead nut thread sizes
Product Code	AN Size	Thread
NUT-BUL-SS-AN3	AN3	3/8"-24 UNF
NUT-BUL-SS-AN4	AN4	7/16"-20 UNF

AN Bulkhead Fittings
Brake Systems
Clutch Systems
Firewall Connections
Panel Mounting
Motorsport

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

Frequently Asked Questions

What are AN bulkhead nuts used for?
AN bulkhead nuts are used to secure compatible AN bulkhead fittings through panels, brackets and firewalls. The nut threads onto the fitting from the opposite side of the panel and clamps it securely in position.
What AN sizes are available?
The stainless steel bulkhead nuts are available in AN3 and AN4. AN3 uses a 3/8"-24 UNF thread and AN4 uses a 7/16"-20 UNF thread.
How do I choose the correct AN bulkhead nut?
Match the nut to the AN size and thread of your bulkhead fitting. Use the AN3 nut with compatible 3/8"-24 UNF bulkhead threads and the AN4 nut with compatible 7/16"-20 UNF bulkhead threads.
What are the AN bulkhead nuts made from?
They are precision machined from stainless steel for excellent strength, durability and corrosion resistance.
Does an AN bulkhead nut seal the fluid connection?
No. The bulkhead nut mechanically secures the fitting to the panel or bracket. The fluid connection is sealed separately by the corresponding fitting and its specified sealing method.