48-89-2313 Thunderbolt Cobalt Drill Bit, 1/4 In., 4 In. Oal

The Milwaukee 48-89-2313 Thunderbolt Cobalt Drill Bit is engineered for specialty drilling in hard metals, including stainless steel and other demanding materials. This 1/4-inch jobber bit delivers precision and durability for both cordless and corded drill users who need reliable performance on tough jobs. Cobalt alloy construction provides exceptional resistance to heat and wear, delivering up to 10 times longer life compared to standard black oxide bits.

The 135-degree split point tip delivers a precision start and prevents walking for fast, accurate holes. The aggressive variable helix design promotes rapid chip removal, limiting heat buildup to keep the bit sharp longer. Ideal for tough applications in hard metals, this bit combines cobalt durability with core resilience to handle continuous use without breaking.

Features and Benefits

• Cobalt Alloy Construction: Provides unmatched durability and heat resistance for specialty drilling in hard metals, delivering up to 10 times longer life than black oxide bits.
• 135-Degree Split Point Tip: Delivers a precision start and prevents walking for fast, accurate holes.
• Variable Helix Design: The aggressive 35-degree helix angle transitioning to 15 degrees promotes rapid chip removal and limits heat buildup, keeping the bit sharper longer.
• Jobber Bit Profile: The 1/4-inch diameter and 4-inch overall length design suits a wide range of twist drilling applications.
• Thunderbolt Core Technology: The bit's core design adds resilience and prevents breaking, ensuring reliable performance through continuous use.

Specifications

• Brand: Milwaukee
• Model: 48-89-2313
• Diameter: 1/4 inch
• Overall Length: 4 inches
• Shank Diameter: 1/4 inch
• Material: Cobalt alloy
• Flute Type: Twist, 3-flute
• Tip Style: 135-degree split point
• Helix Angle: Variable (35 degrees to 15 degrees)

Descriptions are AI-generated. For accurate measurements, please call the store to confirm.