3/8in NPT Socket Head Pipe Plug 25/pkg Black

The 3/8in NPT Socket Head Pipe Plug 25/pkg Black from REDHORSE PERFORMANCE is an essential component for fluid system applications requiring reliable port closure. Designed for professionals and enthusiasts working with hydraulic, pneumatic, and fuel systems, this bulk pack of 25 plugs eliminates the need for repeated small purchases while maintaining consistent inventory levels. Socket head (Allen head) plugs are preferred in high-performance and racing environments where tool-friendly installation and compact profile are critical.

These 3/8 inch NPT plugs feature black anodized aluminum construction, offering corrosion resistance and durability across demanding environments. The Allen head design allows secure tightening using standard hex keys, preventing rounding and stripping common with slotted or Phillips alternatives. Aluminum construction keeps weight minimal while delivering sufficient strength for pressure-rated system applications. The NPT (National Pipe Tapered) thread standard ensures compatibility with virtually all North American hydraulic and pneumatic fitting systems.

Technicians, engine builders, and system integrators benefit from having a full set of 25 plugs on hand for custom installations, repairs, and port protection during assembly. The 932 Series from REDHORSE PERFORMANCE maintains tight tolerances and meets OEM performance standards, making these plugs suitable for use in race cars, marine engines, industrial hydraulic systems, and custom automotive builds. Installation is straightforward—simply thread into any 3/8 NPT female port until snug; do not over-tighten aluminum components into steel ports.