Titan USA CD30243 #43 Screw Machine Drill Bit, 135 deg Point, HSS, Black Oxide, 12 PK

The Titan USA CD30243 is a high-speed steel screw machine (stub length) drill bit with a 135-degree split point and black oxide finish, packed 12 per package. Screw machine length drills are shorter and more rigid than jobber length, making them the preferred choice for CNC machining centers, turret lathes, screw machines, and any application where tool overhang must be minimized to prevent deflection and chatter. The shorter flute length improves chip control and reduces the tendency to walk, especially in interrupted cuts and cross-hole drilling. The 135-degree split point self-centers on contact, reducing the need for a center punch and lowering thrust requirements compared to a conventional 118-degree point. Black oxide finish adds lubricity and corrosion resistance for longer tool life in everyday shop conditions. Multi-pack packaging delivers the economy production environments require when consuming stub length drills at volume.

• Stub (screw machine) length provides superior rigidity vs. jobber length — minimizes deflection and chatter
• Preferred for CNC machining centers, turret lathes, and screw machines where overhang must be controlled
• Shorter flute length improves chip control and reduces walking in interrupted cuts
• 135-degree split point self-centers on contact — less thrust and no center punch required
• Black oxide finish improves lubricity and corrosion resistance over unfinished HSS
• Multi-pack value pricing suits high-consumption production environments