Precision Twist Drill 010216 Hss Drill Bit 1/4 in 12 Pack

Product Description

The PRECISION TWIST DRILL 010216 is a high-speed steel (HSS) drill bit engineered for demanding metal drilling applications in the trades. Sized at 1/4 inch with a 135-degree split point geometry, this bit starts on contact without center punching and reduces walking on hard surfaces. The Type B configuration and R10B style designation indicate a jobber-length format with a black oxide finish that provides mild corrosion resistance and reduced friction during operation. Each pack contains 12 bits, making this a practical shop or service-truck quantity for HVAC techs, plumbers, and electricians who go through bits regularly on the job.

This drill bit is suited for general-purpose drilling in steel, cast iron, copper, aluminum, and other metals encountered in mechanical and electrical trades. The 135-degree split point reduces thrust force and is particularly effective in harder materials where a conventional 118-degree point tends to walk or require excessive feed pressure. The black oxide finish helps extend bit life in repetitive drilling cycles. This 12-pack format is well suited to contractors, shop foremen, and service technicians stocking consumable tooling in bulk.

Key Features

• 135-degree split point starts on contact and reduces walking on metal surfaces
• High-speed steel construction withstands heat generated during metal drilling
• Black oxide finish for mild corrosion resistance and reduced friction
• 1/4 inch diameter in jobber-length R10B style for versatile reach
• 12 bits per pack for bulk stocking of consumable tooling

Compatibility

Designed as a general-purpose HSS jobber-length drill bit compatible with standard 3-jaw keyed or keyless drill chucks accepting 1/4 inch round shanks, including corded and cordless drill drivers and drill presses commonly used in HVAC, plumbing, and electrical installations.

Installation Notes

HSS drill bits should be installed in a properly sized chuck and tightened securely before operation. Always wear appropriate eye protection when drilling metal. Use cutting fluid or lubricant when drilling ferrous metals to extend bit life and reduce heat buildup. Inspect bits for chipping or dulling before each use and replace worn bits to maintain hole quality and operator safety.

Technical Specifications

• Material: High-Speed Steel (HSS)
• Diameter: 1/4 inch
• Point Angle: 135 degrees split point
• Style: R10B
• Type: PTD JL 135SP Type B
• Finish: Black Oxide
• Quantity per Pack: 12
• Unit of Measure: Pack

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 010216