Threading Insert for Oil Pipe Ordering Code System Threading Inserts for Oil Pipe Helter Series API Round Inserts R 8 E R 1 3 S 15 T - P3.1 TTIM45 Type Designation Pitch ( tpi ) I .C H L B C d Y Picture 2 3M4 5 6 7 8 9 10 11 12 R 8 ER 2.3 B 10 T 8 10.170 17.09 0.320 6 4.5 4.2 5° Clamping Thread Insert Hand of Edqes of Teeth of Insert Shape Insert Thread Characteristic R 8 ER 2.3 B 1 OF 8 10.170 17.09 0.320 6 4.5 4.2 5° method standard Pitch type insert a insert edge or used for size profile parameters Carbide grades m of insert machine tools x R 8 ER 2.3 B 10 T- N 8 10.170 17.09 0.010 6 4.5 4.2 5° 0 3 R 8 ER 2.3 B 10 F - N 8 10.170 17.09 0.010 6 4.5 4.2 5° 0) Calmping Method of Insert Thread Standard Pitch R 8 R 1 0 ER 2.4 B 1 0 10 10.170 17.09 0.010 6 4.5 4.2 5° R 10 ER 2.4 B 10 - N 10 10.170 17.09 0.010 6 4.5 4.2 5° m R : For API Round x V: Vertical style 4: 4 TPI 5: 5 TPI 6: 6 TPI 0 B : For API Buttress None: Horizontal style 8: 8 TPI 10: 10 TPI 3 G : For API Line Type Q) R 8 NR 2.3 B 1 0 8 10.170 17.09 0.320 6 4.5 4.2 10 ° Insert Type Hand of Insert Edges of Insert E R 1 3 0 X 3 03 E: External R : Right hand . Use figured 2> 3 4 respectively to represent the number of N : Insertnal L : Left hand cutting edge . R 1 0 NR 2.4 B 10 10 10.170 17.09 0.010 6 4.5 4.2 10 ° 3 7 0 i 3 Teeth of Edge Insert Shape or Used for Machine Tools 0) 3 S S: Square and rectangle API Round Inserts for Colinet Machine Tools P: a Parallelogram Type Designation R 8 ER 1.3 S 15 F - 2.1 Pitch ( tpi ) 8 A 15.760 H 15.540 L 5.980 B 4.76 d 4 a 6° A 15 ° X Picture L Ev R 8 ER 1.3 S 15 F - 2.2 8 15.760 15.860 4.393 4.76 4 6° 15 ° Use figured 2 ^ 3 4 — 8 . T: Triangle R 8 ER 1.3 S 15 T- KX 8 15.875 15.750 4.388 5.00 4 5 ° 30 12 ° i respectively to represent R 8 ER 1.3 S 15 T-LB 8 15.930 15.750 4.400 5.00 4 6° 12 ° the number of simultaneous cutting teeth on each cutting edge Biforate A R 8 ER 1.3 S 20 T- 2.1 8 20.000 15.600 10.200 4.76 4 6° B: Butterfly R 8 ER 1.3 S 20 T- 2.2 8 20.000 15.900 8.610 4.76 4 6° m X 0 / Prism Q) R 10 ER 1.3 S 15 10 15.760 15.450 4.400 4.76 4 6° i Thread Profile Characteristic Parameters Carbide Grades R 10 ER 1.3 S 15 - 2.1 10 15.760 15.160 15.760 4.76 4 6° i 10 R 10 ER 1.3 S 15 - 2.2 10 15.760 15.450 4.400 4.76 4 6° T P3.1 TTIM45 T: Thread profile angle 12 ° F: Thread profile angle 15 ° A D : BCSG V 384: V-0.038R Taper 1:4 V 386: V-0.038 R Taper 1:6 V404: V-0.040 Taper 1:4 TTIP 30 TTIM45 V 504: V-0.050 Taper 1:4 V 506 : V-0.050 Taper 1:6 V 558: V-0.055 Taper 1:8 V 656 : V-0.065 Taper 1:6