Hertel 85704443 Jobber Length Drill Bit 5/32 Inch Hss Tin

Product Description

The HERTEL 85704443 is a jobber-length twist drill bit designed for general-purpose metal drilling in trade and industrial applications. Ground from high speed steel (HSS) and finished with a titanium nitride (TiN) coating, it delivers extended surface hardness and heat resistance compared to uncoated HSS. The bit measures 5/32 inch (0.1562 inch decimal) in diameter with a 3-1/8 inch overall length and a 2-inch flute length. The 118-degree standard point angle suits a wide range of common materials. Weighing 0.17 pounds, this is a single-piece unit sold individually. HVAC technicians, plumbers, electricians, and general contractors keep this size on hand for sheet metal, bracket, and structural drilling tasks.

The HERTEL 85704443 fits standard jobber-length drill applications across residential and light commercial settings. The 5/32-inch diameter is a common size for pilot holes, conduit bracket mounting, sheet metal work, and equipment panel penetrations. The straight cylindrical shank seats in standard 3-jaw keyed or keyless chucks on hand drills, drill presses, and right-angle drill attachments. The right-hand spiral flute configuration clears chips efficiently during through-hole drilling in steel, aluminum, copper, and similar metals encountered on typical service calls.

Key Features

• TiN coating increases surface hardness and extends bit life compared to bare HSS
• 118-degree standard point angle for general-purpose drilling in metal and light materials
• Web-thinned, tapered web design reduces thrust force required at entry
• Right-hand spiral flute with regular helix promotes efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• Jobber-length geometry balances reach and rigidity for everyday trade use

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard 3-jaw keyed or keyless chuck accepting a 5/32-inch straight cylindrical shank. Suitable for hand drills, drill presses, and right-angle drill drivers used in HVAC, plumbing, electrical, and mechanical service work.

Installation Notes

Secure the shank fully in the chuck and verify it is centered before drilling. Always wear eye protection when drilling metal, as TiN-coated HSS bits generate fine chips and heat at higher speeds. Use appropriate cutting fluid or lubricant when drilling through ferrous materials to preserve coating life and edge integrity. Ensure work material is clamped or secured before applying drilling pressure.