Hertel S-84579051 Jobber Drill 3/64 Inch 135 Deg Hss

Product Description

The HERTEL S-84579051 is a high speed steel jobber drill bit designed for precision drilling in metal, wood, and composite materials across industrial and trade applications. Ground to a 135-degree split point with web thinning, this bit reduces walking on entry and requires less feed force than a standard 118-degree point. The oxide coating provides a mild lubricity layer and helps resist heat buildup during drilling. At 0.0469 inches (3/64 inch) in diameter with a 1-3/4 inch overall length and a 3/4 inch flute length, it is sized for tight-clearance work and small-diameter holes in sheet metal, electronics enclosures, and light structural components. The straight-cylindrical shank seats securely in standard drill chucks.

This bit is appropriate for use in hand drills, drill presses, and CNC drilling operations where small-diameter holes are required. The right-hand spiral flute and regular helix angle make it well suited for general-purpose drilling in ferrous and non-ferrous metals. Its heavy-duty grade classification and NAS 907 specification designation indicate it meets aerospace and industrial quality standards, making it a reliable choice for electricians, plumbers, HVAC technicians, and maintenance professionals who need consistent performance in small-bore drilling tasks.

Key Features

• 135-degree split point with web thinning reduces walking and lowers required feed force
• High speed steel construction provides hardness and wear resistance for metal drilling
• Oxide coating adds lubricity and mild heat resistance during operation
• Right-hand, regular-spiral, 2-flute design for efficient chip evacuation
• Straight-cylindrical shank compatible with standard 3-jaw drill chucks
• Meets NAS 907 specification for dimensional and performance consistency

Compatibility

Designed as an OEM-style replacement or stock drill bit for standard 3-jaw keyed and keyless chucks accepting straight-cylindrical shanks at 3/64 inch diameter.

Installation Notes

Ensure the drill chuck is fully tightened and the bit is seated flush before operation. Use appropriate cutting fluid or lubricant when drilling hardened steel to extend bit life and prevent heat damage. Electricians and HVAC technicians should follow applicable NEC or NFPA guidelines when drilling into panels or enclosures. Inspect the cutting edges for wear before each use and replace bits that show chipping or dulling to maintain hole-size accuracy.