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  • Cleveland 3780-6 Cobalt Steel Aircraft Maintenance Drill Bit, Short Flute, 6" Overall Length, Uncoated (Bright), Round Shank, 135 Degree Split Point
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Cleveland 3780-6 Cobalt Steel Aircraft Maintenance Drill Bit, Short Flute, 6" Overall Length, Uncoated (Bright), Round Shank, 135 Degree Split Point

Available in multiple versions


Price: $12.98 - $55.05
Product Specifications
Brand Name Cleveland
Material Type Cobalt Steel
Finish Types Uncoated (Bright)
Cutting Angle 135  Degrees
Cutting Direction Right-Hand
Drill Point Conventional Point
Flute Type Fast Spiral
Shank Type Round
UNSPSC Code 20121600

The Cleveland 3780-6 series aircraft maintenance short-flute extended-lengt... Read full product description



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Product Features

  • Aircraft maintenance drill bit meets NAS 907 Rev. 14 and ANSI standards
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
  • Uncoated (bright) finish is an untreated surface that can be used on a range of materials
  • Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
  • Short flutes and extended length allow accurate drilling in hard-to-reach areas

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B004P8JR98
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

The Cleveland 3780-6 series aircraft maintenance short-flute extended-length drill bit is made from cobalt steel with an uncoated (bright) finish and has a 135-degree split point for penetrating without a pilot hole on a range of materials. The drill bit has a 6" overall length with short flutes to accurately drill in hard-to-reach areas. It meets National Aerospace Standards (NAS) 907 Rev. 14 for aircraft maintenance and American National Standards Institute (ANSI) standards. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. The uncoated finish has no additional surface treatment or coating. A self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips that reduce clogging compared to a 118-degree point. The drill bit has a fast spiral (also called a high helix angle) with a high cutting angle and wider flutes than a standard drill for increased chip removal. Compared to a standard drill bit, the drill bit has a thicker web for increased strength and rigidity. The round shank accommodates most drill chucks.

Drill bits are cutting tools used to make holes in a range of materials using machines such as handheld portable drills, machining centers, and lathes. Drill bits come in a variety of lengths and types, the most common of which is the twist drill bit. The round, twisted shaft of the twist drill bit typically has two cutting edges and flutes. The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges. Jobber length twist drill bits, the most common length of twist drill bit, offer a good compromise of length and reach for the widest range of materials and applications. Mechanic's length twist drill bits (also called maintenance length) are a little shorter than jobber length and less prone to deflection when drilling. Short length twist drill bits (also called stub or screw-machine length) are the shortest and stiffest twist drill bits, helping to reduce the chance of deflection or breakage when drilling. Reduced shank twist drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with a 1/4", 1/2", or 3/4" drill chuck to create large holes. Long length twist drill bits (also called taper length) are a little longer than jobber length, allowing for deeper holes and longer reach. Extra-long length twist drill bits (also called extension) are longer than long length twist drill bits for greater reach or for drilling deeper holes.

Cleveland manufactures tools for drilling, threading, and milling applications. The company, headquartered in Seneca, SC, meets International Organization for Standardization (ISO) standard 9001.


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