Hertel 83238741 Drill Bit Letter F 135 Deg Hss Oxide

Product Description

The HERTEL 83238741 is a letter F screw machine length drill bit designed for high-speed drilling in metal and production machining applications. Built from high-speed steel (HSS) with an oxide coating, it features a 135-degree split point with web thinning for reduced thrust and faster starts without center punching. The straight cylindrical shank measures 0.2570 inches in diameter, matching the letter F decimal equivalent. At 2.625 inches overall length with a 1.4375-inch flute length, this short-length geometry provides added rigidity in screw machine, turret lathe, and CNC applications where chatter and deflection are concerns.

This drill bit is suited for production environments, job shops, and maintenance operations requiring consistent hole quality in steel, cast iron, aluminum, and similar materials. The screw machine length format is the standard choice when drilling in automatic screw machines, drill presses, or any setup where a compact, rigid bit is preferred over jobber length. The heavy-duty grade and NAS 907 specification make it appropriate for demanding industrial drilling cycles.

Key Features

• Letter F size: 0.2570 inches decimal equivalent for precise hole sizing
• 135-degree split point with web thinning reduces entry thrust and eliminates the need for center punching
• High-speed steel construction with oxide finish for surface hardness and basic lubricity
• Screw machine length (2.625 inches OAL) provides rigidity and reduced deflection versus jobber-length bits
• Regular spiral, 2-flute design with parallel web configuration for efficient chip evacuation
• Meets NAS 907 specification for dimensional and performance consistency in production use

Compatibility

Designed as an OEM-style replacement or standard tooling option for screw machines, turret lathes, and CNC drill stations using straight-shank drill bits in the 0.2500 to 0.3000 inch size range.

Installation Notes

Installation is performed by machinists and tool-and-die professionals using a standard drill chuck or collet sized for a 0.2570-inch straight shank. Ensure the chuck or collet is fully tightened and the shank is fully seated before operation. Always power down or engage the machine lockout before changing tooling. Verify spindle speed and feed rate are appropriate for the workpiece material before starting the cut.