1/4" LONG COBALT THREADED - Brown Aviation Tool

Engineered for precision and endurance, the Brown Aviation Tool BAT11250 1/4" Long Cobalt Threaded Drill Bit is a professional-grade solution for demanding drilling applications. This specialized drill bit delivers exceptional performance and extended tool life when working with challenging materials, ensuring reliable results for technicians and mechanics.

Key Features

• Premium Cobalt Construction: Manufactured from durable cobalt alloy steel (often M42 8% cobalt), this drill bit offers superior hardness and heat resistance, making it ideal for tough materials.
• Threaded Shank Design: Features an industry-standard 1/4"-28 threaded shank for secure and positive attachment in compatible drill adapters, particularly effective in angle drills and confined spaces.
• NAS 965 Type "D" Compliant: Produced to stringent National Aerospace Standard (NAS) 965 Type "D" specifications, guaranteeing professional-grade quality and performance.
• 135° Split Point: The heavy-duty 135-degree split point ensures rapid penetration and prevents "walking" or wandering at the start of the hole, enhancing drilling accuracy.
• Extended Length: Designed with a "Long" profile, this drill bit provides the necessary reach for drilling in areas with limited access or through thicker components.
• Surface Treated: A surface treatment resists abrasion and minimizes material loading, further extending the drill bit's lifespan and maintaining cutting efficiency.

Applications

This 1/4" Long Cobalt Threaded Drill Bit is indispensable for professionals in aerospace, automotive, and industrial sectors. It excels in drilling through high-tensile strength materials such as stainless steel, titanium alloys, and high-strength composites commonly found in aircraft structures and heavy machinery. Its threaded shank is particularly beneficial for use with aircraft angle drills, enabling precise hole creation in tight quarters for structural repairs, fastener installations, and other critical maintenance tasks where standard drill bits cannot reach.