CHICAGO-LATROBE 54128 29PC 135 Degree Heavy-Duty Screw Machine Length Drill Set

The CHICAGO-LATROBE 54128 Screw Machine Drill Bit Set contains 29 high speed steel drill bits designed for fractional inch measurements ranging from 1/16 inch to 1/2 inch. These bits have a P3 split point with a 135-degree point angle and two flutes for drilling materials compatible with high speed steel drill bits and the bit specifications listed (e.g., HSS with TiN finish, P3 split point, 135° point angle). The set includes a metal index for organization and features screw-machine length bits with straight shanks and a spiral flute design, configured for right-hand rotation for right-hand cutting operation.

Key Features:

• - Drill bits sized from 1/16" to 1/2" in 64ths increments.
• - High speed steel construction with titanium nitride (TiN) finish.
• - Split point (P3) drill bits with a 135-degree point angle.
• - 2-flute spiral design with helix angles between 21° and 34°.
• - Grade for machining applications using the specified bit types and operating conditions appropriate for HSS drill bits with TiN finish and the listed point and flute geometry.
• - Straight shank type suitable for screw machine length drilling.
• - Metal drill index case included for bit storage and organization.
• - Non-coolant through design requiring external coolant if used.

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