CLEVELAND C70369 21PC NAS907 Type C Heavy-Duty Screw Machine Dril Set Cleveland

The CLEVELAND C70369 Screw Machine Drill Bit Set includes 21 fractional inch drill bits ranging from 1/16 inch to 3/8 inch in diameter. Made from heavy-duty high speed steel, these drill bits feature a split point tip with a 135-degree angle and spiral flutes for right-hand cutting. The set is manufactured to NAS 907 Type C specifications and is intended for drilling the following metallic materials: austenitic stainless steel, aluminum, carbon steel, die steel, iron-based alloys, and tool steel. The bits have a screw-machine length and are bright (uncoated) finished, provided in a metal drill index case for organized storage.

Key Features:

• - Number of drill bits: 21 with sizes from 1/16" to 3/8" by 64ths.
• - Drill bit material: Heavy-duty high speed steel.
• - Point type: Split point with a 135° angle for improved centering and reduced walking.
• - Flute type: Spiral with helix angles between 21° and 34°.
• - Shank type and shape: Straight shank ranging from 1/16" to 3/8" in diameter.
• - Drill length class: Screw-machine length, with drilling lengths from 0.625" up to 1.813".
• - Application: Suitable for drilling metallic materials within the materials listed in the description
• - Includes a metal index case for bit organization.
• - Cutting direction: Right hand.
• - Depth-to-diameter ratio: 4x diameter.
• - Measurement system: Fractional inch.

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