Schedule 80 Steel Pipe Nipple, 1/4-18 Male NPT, 6.00 Inch Long

It has 1/4-18 Male NPT threads and it is a 6.00 inch long pipe nipple, so it matches that thread size and style.

Seamless pipe nipples hold up better under pressure because there's no weld seam that can weaken or fail over time. On a 1/4-inch line running at higher pressures, that matters more than people sometimes expect. The Schedule 80 wall thickness adds to that, giving you more material between the fluid and the outside compared to standard Schedule 40. For industrial work where pressure spikes happen, seamless is the right call.