Grade Grade ISO-threading (internal) ISO-threading (external) UN-threading (internal) HARDWARE 60° P 60° P 60° P hardware desc 1 hardware desc 3 hardware desc 4 hardware desc 5 hardware desc 6 hardware desc 7 12 12 12 21 4.7 21 4.7 21 4.7 UN-threading (external) NPT-threading NPTF-threading 60° P 60° P 1:16 60° P 1:16 12 12 12 21 4.7 21 4.7 21 4.7 BSPT-threading W-threading 55° P 1:16 55° P 12 12 21 4.7 21 4.7 Designation Pitch IN1030 IN2030 Designation Pitch IN1030 IN2030 ISO-threading (internal) LYEU21240UN-X 24 LYEU21100IS 1 LYEU21200UN-X 20 LYEU21150IS 1.5 LYEU21180UN-X 18 LYEU21175IS 1.75 LYEU21160UN-X 16 LYEU21200IS 2 LYEU21140UN-X 14 LYEU21250IS 2.5 LYEU21120UN-X 12 LYEU21300IS 3 LYEU21100UN-X 10 LYEU21350IS 3.5 NPT-threading ISO-threading (external) LYEU21140NT 14 LYEU21100IS-X 1 LYEU21115NT 11.5 LYEU21150IS-X 1.5 NPTF-threading LYEU21200IS-X 2 LYEU21140NF 14 LYEU21250IS-X 2.5 LYEU21115NF 11.5 LYEU21300IS-X 3 BSPT-threading UN-threading (internal) LYEU21140BT 14 LYEU21240UN 24 LYEU21110BT 11 LYEU21200UN 20 W-threading LYEU21180UN 18 LYEU21200BW 20 LYEU21160UN 16 LYEU21190BW 19 LYEU21140UN 14 LYEU21160BW 16 LYEU21120UN 12 LYEU21140BW 14 LYEU21100UN 10 LYEU21110BW 11 LYEU21080UN 8 =P =M =K =N =S =H LYEU21070UN 7 UN-threading (external) HARDWARE Driver Screw DS-T15T IS21 573