Female Pipe Rectus 21KA Nipple SKU Body Size Threads Material Length HF21SFIW02MXN 1/8 1/8-27 NPT Brass 1.14 HF21SFIW02GMXN 1/8 1/8-28 BSPP Brass 1.14 HF21SFIW04MXN 1/8 1/4-18 NPT Brass 1.33 HF21SFIW04GMXN 1/8 1/4-19 BSPP Brass 1.33