Hertel 62748355 Jobber Drill 1/4 in 135 Deg Ticn Hss

Product Description

The HERTEL 62748355 is a 1/4 inch diameter jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. Built from heavy-duty high speed steel (HSS) with a titanium carbonitride (TiCN) coating, it delivers improved surface hardness and extended tool life compared to uncoated HSS. The 135-degree split point geometry reduces walking on entry and lowers thrust requirements, making it well suited for production drilling and repetitive hole cycles. With a 4 inch overall length and 2-3/4 inch flute length, it fits standard drill chucks and drill press setups common in trade and industrial environments. Licensed machinists, pipefitters, and sheet metal workers are the primary users.

This bit is used in residential and light commercial trade applications where consistent, clean holes are required in ferrous and non-ferrous materials. Typical install scenarios include drilling pilot holes for fasteners, conduit knockouts, pipe hangers, and structural attachments. The right-hand cutting direction and regular spiral flute configuration make it compatible with standard corded and cordless drill drivers as well as drill press setups. It meets NAS specification designations and is suited for hand-held power tool use in the field or bench work in a shop environment.

Key Features

• 1/4 inch (0.2500 inch) diameter with straight cylindrical shank for universal chuck compatibility
• 135-degree split point with web thinning reduces walking and lowers drilling thrust
• TiCN coating increases surface hardness and wear resistance over standard HSS
• Heavy-duty grade HSS construction handles demanding, repetitive holemaking cycles
• Regular spiral, 2-flute design promotes efficient chip evacuation
• Tapered web configuration and no coolant-through design suited for dry drilling applications

Compatibility

Designed as an OEM-style jobber drill bit replacement suitable for standard 3-jaw drill chucks accepting straight cylindrical shanks in the 1/4 inch size range.

Installation Notes

Install into a properly sized chuck and tighten securely before operation. Always wear appropriate eye protection when drilling. For best results, apply consistent feed pressure and allow the split point geometry to self-center before increasing speed. When drilling metal, use a cutting fluid or lubricant to manage heat buildup and extend bit life.