AN10 Bulkhead Lock Nut — 7/8" UNF, Alloy or Stainless Steel

A 7/8" UNF bulkhead lock nut for securing AN10 (-10 AN) bulkhead fittings through a panel, bulkhead, or firewall. Available in anodised alloy or stainless steel to suit your build requirements. The lock nut threads onto the bulkhead fitting from the reverse side of the panel, clamping the fitting securely in place for a leak-free, rattle-free installation.

Key Specifications

• Size: AN10 (-10 AN)
• Thread: 7/8" UNF
• Available Materials: Anodised alloy or stainless steel
• Application: Securing AN10 bulkhead fittings through panels and firewalls

Alloy vs Stainless Steel — Which to Choose?

• Alloy: Lightweight and anodised for corrosion resistance. Ideal for weight-sensitive builds and interior or protected locations where exposure to moisture is minimal.
• Stainless Steel: Maximum corrosion resistance. Recommended for underbody, engine bay, or any location exposed to water, road salt, or high temperatures.

Fitment & Compatibility

Designed for use with our AN10 Bulkhead Fitting (BRT008) and compatible with all standard AN10 7/8" UNF bulkhead fittings. Thread the lock nut onto the bulkhead fitting from the reverse side of the panel and tighten to secure. For other AN sizes, see our full range of AN bulkhead fittings and lock nuts.

Why Choose BRT Motorsport?

Quality AN fittings and hose for performance builds. Build clean, professional fluid lines with AN fittings from BRT Motorsport.