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Solid Carbide Twister® GP Center Drill
Designed to maintain accurate center holes on long production runs, or when precise centering is required. Solid carbide construction helps reduce tool changes when centering abrasive or difficult to machine materials.
  • 2 Flutes
  • Solid carbide
  • 60° Included angle
  • Straight helix
  • Uncoated, coating available upon request
  • Metric sizes manufactured to DIN 333A, except OAL on 0.5 and 0.8mm

Product Range

Tool No. EDP Diameter (D/D1) Diameter Dec Shank Diameter (D2) Overall Length (L1) Flute Length (L2) Coating Shank Type
.0197 40201970 40201 0.50mm .0197 3.15mm 31.5mm Uncoated Straight
.0197 40201970A 76293 0.50mm .0197 3.15mm 31.5mm ALtima® Straight
.0250 40202500 40205 00 .0250 1/8 1-1/2 Uncoated Straight
.0250 40202500A 12776 00 .0250 1/8 1-1/2 ALtima® Straight
.0250 40202500T 76294 00 .0250 1/8 1-1/2 TiN Straight
.0250 40202500C 17427 00 .0250 1/8 1-1/2 TiCN Straight
.0310 40203100 40209 0 .0310 1/8 1-1/2 Uncoated Straight
.0310 40203100A 78044 0 .0310 1/8 1-1/2 ALtima® Straight
.0310 40203100C 78045 0 .0310 1/8 1-1/2 TiCN Straight
.0310 40203100T 76295 0 .0310 1/8 1-1/2 TiN Straight
.0315 40203150 40213 0.8mm .0315 3.15mm 31.5mm Uncoated Straight
.0394 40203940 40217 1mm .0394 3.15mm 31.5mm Uncoated Straight
.0468 40204680 40221 1 .0468 1/8 1-1/2 Uncoated Straight
.0468 40204680A 76296 1 .0468 1/8 1-1/2 ALtima® Straight
.0468 40204680T 76297 1 .0468 1/8 1-1/2 TiN Straight
.0492 40204920 40225 1.25mm .0492 3.15mm 31.5mm Uncoated Straight
.0630 40206300 40229 1.6mm .0630 4mm 35.5mm Uncoated Straight
.0630 40206300A 78047 1.6mm .0630 4mm 35.5mm ALtima® Straight
.0781 40207810 40233 2 .0781 3/16 1-7/8 Uncoated Straight
.0781 40207810A 78048 2 .0781 3/16 1-7/8 ALtima® Straight
.0781 40207810T 76298 2 .0781 3/16 1-7/8 TiN Straight
.0787 40207870 40237 2mm .0787 5mm 40mm Uncoated Straight
.0984 40209840 40241 2.5mm .0984 6.3mm 45mm Uncoated Straight
.1093 40210930 40245 3 .1093 1/4 2 Uncoated Straight
.1093 40210930A 76299 3 .1093 1/4 2 ALtima® Straight
.1093 40210930T 76300 3 .1093 1/4 2 TiN Straight
.1240 40212400 40249 3.15mm .1240 8mm 50mm Uncoated Straight
.1240 40212400A 15842 3.15mm .1240 8mm 50mm ALtima® Straight
.1250 40212500 40253 4 .1250 5/16 2-1/8 Uncoated Straight
.1250 40212500A 76301 4 .1250 5/16 2-1/8 ALtima® Straight
.1250 40212500C 16098 4 .1250 5/16 2-1/8 TiCN Straight
.1575 40215750 40257 4mm .1575 10mm 56mm Uncoated Straight
.1875 40218750 40261 5 .1875 7/16 2-3/4 Uncoated Straight
.1875 40218750A 78049 5 .1875 7/16 2-3/4 ALtima® Straight
.1875 40218750T 76302 5 .1875 7/16 2-3/4 TiN Straight
.1968 40219680 40265 5mm .1968 12.5mm 63mm Uncoated Straight
.2187 40221870 40269 6 .2187 1/2 3 Uncoated Straight
.2187 40221870A 76303 6 .2187 1/2 3 ALtima® Straight
.2187 40221870T 76304 6 .2187 1/2 3 TiN Straight