3/8" x 24 UNF Alloy Blanking Plug – AN3

A precision-machined anodised alloy blanking plug with a 3/8" x 24 UNF male thread — the standard thread for AN3 (-3 AN) brake fittings. Unlike a blanking cap (which fits over a male fitting), this plug threads directly into a female port to seal it. Perfect for blocking unused female ports on brake bias bars, master cylinders, bulkhead fittings, and brake line tee pieces.

When Do You Need One?

• Sealing unused female ports on brake bias bars or master cylinders
• Blanking off redundant ports during brake system reconfiguration
• Pressure testing — plug one end while testing the other
• Protecting open female fittings during storage or transit

Product Details

• Thread: 3/8" x 24 UNF male (AN3 / -3 AN)
• Material: Anodised aluminium alloy
• Fitment: Male thread plug — fits into female AN3 ports
• Sold individually
• Supplied by BRT Motorsport — brake line and fitting specialists. Fast UK dispatch.