Product Information Material: Nylon/Nickel-Plated Brass Seal: Buna-N D seal Working Pressure: 290 PSI at ambient temperature Select a Product Part NumberMale ThreadMale Thread SizeTube OD 31030420Straight10-325/32" 31035611NPT1/8"1/4" 31035614NPT1/4"1/4" 31030411NPT1/8"5/32" 31036218NPT3/8"1/2" 31035618NPT3/8"1/4" 31036011NPT1/8"3/8" 31035311NPT1/8"1/8" 31030811NPT1/8"5/16" 31035320Straight10-321/8" 31030414NPT1/4"5/32" 31036014NPT1/4"3/8" 31030814NPT1/4"5/16" 31036018NPT3/8"3/8" 31036222NPT1/2"1/2" 31035308NPT1/16"1/8" 31036214NPT1/4"1/2"