CHICAGO-LATROBE 69889 15PC 135 Degree Heavy-Duty Screw Machine Lngth Drill Set

Including 15 high speed steel bits, the CHICAGO-LATROBE 69889 is a screw machine drill bit set rated for use with fractional inch dimensions (sizes 1/16 in. to 1/2 in.). These screw-machine length drill bits have a straight shank and a P3 split point geometry for drilling materials when used within the specified cutting parameters for the selected material. The set includes sizes ranging from 1/16 inch to 1/2 inch, comes with a metal index case for storage. The bits are screw-machine length with a black oxide finish and meets the NAS 907 Type C standard. This set is intended for screw-machine length drilling applications in the specified size range.

Key Features:

• - Number of drill bits: 15 pieces spanning sizes 1/16" to 1/2".
• - Material: High speed steel with a heavy duty machining grade.
• - Point type: P3 split point geometry with a 135-degree point angle.
• - Flute design: Two-flute spiral with helix angles from 21° to 34°.
• - Shank type: Straight shank for tool holding compatibility with straight-shank drill bit holders/chucks.
• - Drill bit length: Screw-machine length for drilling applications requiring screw-machine length bits.
• - Finish: Black oxide coating.
• - Measurement system: Fractional inch dimensions.
• - Drill bit case type: Metal index for bit organization and storage.
• - Cooling: Not suitable for internal coolant; coolant is applied externally.

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