Sgs 66412 Screw Machine Drill Bit 3/16 in Solid Carbide

Product Description

The SGS 66412 is a screw machine length drill bit designed for high-performance drilling in metal, composite, and universal workpiece materials. Built from micrograin solid carbide and finished with a Ti-NAMITE-X coating, this bit delivers extended tool life and heat resistance in demanding applications. The 135-degree split point reduces walking on entry and lowers thrust requirements compared to conventional 118-degree points. At 2.5984 inches overall length with a 0.9449-inch flute, the stub-length geometry provides added rigidity, making it well suited for CNC machining centers, drill presses, and manual operations where chatter and deflection must be minimized. Licensed machinists and tooling technicians are the primary users.

The SGS 66412 fits production drilling environments where tight tolerances and consistent hole quality are required. The 3/16-inch diameter and straight-cylindrical shank accept standard drill chucks and collet holders. Coolant-through capability makes it compatible with machining centers equipped with internal coolant delivery, reducing heat buildup and chip evacuation time during deep-hole passes. This bit is suited for job shops, manufacturing facilities, and maintenance operations working with a broad range of materials, per the universal primary workpiece material rating.

Key Features

• Micrograin solid carbide construction for high wear resistance and rigidity
• Ti-NAMITE-X coating improves lubricity and extends tool life in abrasive materials
• 135-degree web-thinned split point reduces entry thrust and self-centers on contact
• Coolant-through design compatible with internal coolant machining centers
• 4-margin geometry improves hole roundness and surface finish
• Screw machine length provides enhanced rigidity over jobber-length equivalents

Compatibility

Designed as a high-performance replacement drill bit for CNC machining centers, drill presses, and manual drilling operations accepting a 0.2300-inch straight-cylindrical shank. Conforms to DIN 6537 specification. Fits drill chucks and collet systems designed for standard straight-shank tooling in the 3.50 to 5.00 mm diameter range.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician familiar with cutting tool handling. Secure the shank fully within the chuck or collet to the minimum grip depth before operation to prevent pullout. When using coolant-through capability, verify that the machine spindle and toolholder are rated for internal coolant delivery and that coolant pressure is set per machine manufacturer guidelines. Inspect the cutting edges for chipping or wear before each use; solid carbide tooling is brittle and should not be dropped or subjected to impact loading.