• Drive Type: Internal hex socket (Allen drive) recess for tightening with a hex wrench.
• Threading: External tapered or straight pipe/machine threads (such as NPT, BSP, or metric sizes).
• Finish: Zinc-coated with a passivated surface treatment for corrosion resistance.
• Common Uses: Sealing ports in engines, hydraulic manifolds, pneumatic systems, plumbing, and fluid-handling assemblies.