
U-Type R Y Y R IR/L-55° X X Internal Laydown Threading l Inserts with a 55 ° Partial l Profile for General Industry di di Internal left-hand shown NUT Dimensions Tough 1 Hard 55° THREADING SCREW TPI TPI Designation di P min P max max min l R X Y IC228 IC928 IC50M IC250 IC508 IC808 IC908 IC1007 06IR/L A 55 3.97 0.50 1.25 48 20 6.00 0.05 0.5 0.6 • 08IR/L A 55 4.76 0.50 1.50 48 16 8.00 0.05 0.6 0.7 • • • 08UIRL U 55 4.76 1.75 2.00 14 11 8.00 0.10 0.9 4.0 • 11IR/L A 55 6.35 0.50 1.50 48 16 11.00 0.05 0.8 0.9 • • • • • 16IR A 55 9.52 0.50 1.50 48 16 16.00 0.05 0.8 0.9 • • • 16IR/L AG 55 9.52 0.50 3.00 48 8 16.00 0.05 1.2 1.7 • • • • • 16IRB AG 55 (1) 9.52 0.50 3.00 48 8 16.00 0.05 1.2 1.7 • 16IRM AG 55 (1) 9.52 0.50 3.00 48 8 16.00 0.05 1.2 1.7 • • • • • 16IR/L G 55 9.52 1.75 3.00 14 8 16.00 0.20 1.2 1.7 • • • • 16IRB G 55 (1) 9.52 1.75 3.00 14 8 16.00 0.20 1.2 1.7 • 16IRM G 55 (1) 9.52 1.75 3.00 14 8 16.00 0.20 1.2 1.7 • • • 22IR N 55 12.70 3.50 5.00 7 5 22.00 0.42 1.7 2.5 • • • 27IR Q 55 15.88 5.50 6.00 4.5 4 27.00 0.60 2.0 2.9 • • • • For insert identification system, see pages 489. • For threading between walls use GRIP-type inserts TIP-WT, GEPI-WT, TIPI-WT. • For detailed cutting data, see pages 536-546 (1) With pressed chipformer For tools, see pages: MGSIR/L (534) • SIR/L (531) 24 ±0.04 PENTA 24-WT Precision Ground Pentagonal External Threading Inserts R 2.4 55° with a Whitworth 55° Partial 4.0 Profile and Chipformer 1.8 max Dimensions Designation TPI max TPI min R IC908 PENTA 24-WT-0.05 48 14 0.05 • PENTA 24A-WT-0.05 (1) 48 14 0.05 • • TPImin=6.4/D(inch) D-nominal thread diameter (inch) (1) Flat rake (without a chipformer) For tools, see pages: PCADR/L (268) • PCADR/L-JHP (268) • PCHBR/L (269) • PCHPR/L (268) • PCHR/L-24 (265) • PCHR/L-24-JHP (266) ±0.025 17.7 Ref. TIP-WT Precision Ground Double-Ended 55° W Threading Inserts with a 55° R TIP inserts are 1.6 mm longer than GIP in the same pocket Partial Profile and Chipformer Dimensions Tough 1 Hard Designation W R ±0.03 TPI max TPI min (1) IC08 IC908 TIP 2WT-0.05 2.40 0.05 54 D/6.4 • • TIP 4WT-0.15 4.00 0.15 19 D/6.4 • • TIP 5WT-0.25 5.50 0.25 12 D/6.4 • • Toolholder seat needs to be modified according to insert profile to ensure clearance • Pitch max 0.187xD (1) D-Diameter of thread (inch) For tools, see pages: C#-GHDR/L (233) • CGHN 26-M (302) • CGHN 32-DGM (304) • CGHN 32-M (303) • CGHN-D (239) • CGHN-DG (239) • CGHN-S (239) • CGPAD (238) • CGPAD-JHP (238) • GHDR/L (short pocket) (233) • GHDR/L-JHP (short pocket) (234) • GHGR/L (235) • GHMPR/L (232) • GHMR/L (232) • GHSR/L (312) • GHSR/L-JHP-SL (313) 491