CLEVELAND C70366 60PC NAS907 Type J Heavy-Duty Cobalt Jobber Length Drill Set

The CLEVELAND C70366 is a cobalt jobber-length drill bit set rated for use in machine drilling applications. This set includes 60 pieces, ranging in size from #60 to #1 (1/16" to 1/2"), intended for drilling aluminum, stainless steel, steel, and titanium. The right-hand spiral drill bits feature split-point geometry (135°) and right-hand spiral flutes for chip evacuation. The set is supplied in a metal drill index for organized storage and includes bits with varying overall lengths to match specified drilling depths. The drill bits meet NAS 907 Type J standards, indicating compatibility with aircraft-grade material machining.

Key Features:

• - Material: Cobalt
• - Drill bit size range: #60 to #1 (1/16" to 1/2").
• - Point type: Split point with 135-degree angle.
• - Shank type and diameter: Straight shank from #60 to #1.
• - Drill length class: Jobber length, with overall lengths from 1 5/8" up to 3 7/8".
• - Depth-to-diameter ratio: 4xD
• - Included metal drill index case for storage.
• - Measurement system: Wire gauge.
• - Compliant with NAS 907 Type J standards for aircraft/aerospace applications.

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