Hertel 85704419 Jobber Drill Bit 1/8 Inch Hss Tin

Product Description

The HERTEL 85704419 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastic. Sized at 1/8 inch (0.1250 inch decimal), it features a 118-degree standard point angle with web thinning for easier penetration and reduced walking on entry. The bit is manufactured from high speed steel (HSS) and finished with a titanium nitride (TiN) coating to extend cutting life and reduce friction. Overall length is 2-3/4 inches with a 1-5/8 inch flute length. The straight-cylindrical shank seats directly in standard 3-jaw drill chucks. Right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole operations.

This bit is suited for light to medium drilling tasks encountered in HVAC, plumbing rough-in, electrical work, and general fabrication. Typical applications include drilling pilot holes in sheet metal, conduit hangers, mounting brackets, and structural framing members. The 1/8 inch diameter is a common pilot and clearance size for small fasteners and anchor points across residential and commercial trade work. Sold individually, with a minimum order quantity of 12 units per order.

Key Features

• 1/8 inch diameter with 0.1250 inch decimal equivalent for precise sizing
• 118-degree standard point angle with web-thinned, tapered web configuration for reduced entry force
• High speed steel construction for durability across a range of workpiece materials
• TiN coating reduces friction and extends cutting edge life compared to uncoated HSS
• Right-hand, regular spiral flutes with efficient chip evacuation
• Straight-cylindrical shank compatible with standard 3-jaw chucks and drill drivers

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard 3-jaw drill chuck or keyed chuck accepting a 1/8 inch straight shank.

Installation Notes

Install and remove drill bits only when the tool is powered off and the chuck is fully released. Secure the workpiece before drilling to prevent rotation or movement. Use appropriate cutting speed for the material being drilled — HSS bits run best at moderate RPM in metal and higher RPM in softer materials. Inspect the cutting edges before use and replace bits that show signs of wear or chipping to maintain hole quality and prevent breakage.