Female Pipe European Interchange Nipple SKU Body Size Threads Material Length HFRF-254-04FP-S 1/4 1/4-18 NPT Steel 1.42 HFRF-254-04FP 1/4 1/4-18 NPT Brass 1.42 HFRF-254-04GFP-S 1/4 1/4-19 BSPP Steel 1.42 HFRF-254-04GFP 1/4 1/4-19 BSPP Brass 1.42 HFRF-254-06FP-S 1/4 3/8-18 NPT Steel 1.48 HFRF-254-06FP 1/4 3/8-18 NPT Brass 1.48 HFRF-254-06GFP-S 1/4 3/8-19 BSPP Steel 1.48 HFRF-254-06GFP 1/4 3/8-19 BSPP Brass 1.48 HFRF-374-06FP-S 3/8 3/8-18 NPT Steel 1.50 HFRF-374-06FP 3/8 3/8-18 NPT Brass 1.50 HFRF-374-06GFP-S 3/8 3/8-19 BSPP Steel 1.50 HFRF-374-06GFP 3/8 3/8-19 BSPP Brass 1.50 HFRF-374-08FP-S 3/8 1/2-14 NPT Steel 1.71 HFRF-374-08FP 3/8 1/2-14 NPT Brass 1.71 HFRF-374-08GFP-S 3/8 1/2-14 BSPP Steel 1.71 HFRF-374-08GFP 3/8 1/2-14 BSPP Brass 1.71