Cable Mounting & Accessories SMCG 1 NPT BLACK 9-5.5mm HOLE N/N SKN (5 pieces)

npt is a u.s. standard for tapered threads used on pipes and fittings threads are either straight or they are tapered straight threads are used for example on a nuttin bolt to join them together tapered threads however as on this pipe are used for sealing a connection for fittings and pipes that carry gases or liquids many of these fittings are used on our small aircraft in the form of connectors for our fuel filters gas colliders fuel tanks brake lines air lines etc they're also used for pipes in our house for carrying our water and natural gas the principle for tapered threads the NPT standard is the same for both it's been around since 1864 so it's time we became familiar with the principles ourselves here are the standard sizes for NPT fittings and what the threads actually look like sitting side-by-side starting from the left we have 1/8 inch very common in our aircraft 1/4 inch al