15PC 135 Degree Heavy-Duty Cobalt Screw Machine Drill Set Chicago-Latrobe 559 Straw HSS-CO 1/16-1/2x1/32

The CHICAGO-LATROBE 69856 Screw Machine Drill Bit Set includes 15 cobalt steel drill bits intended for drilling through materials compatible with cobalt steel drill bits (as applicable to the user’s material and application). These heavy duty bits feature a screw machine length and a split point design with a 135-degree angle for drilling tasks using split-point (135°) geometry for positioning, suitable for drilling using fractional inch sizes ranging from 1/16" to 1/2". The set is supplied in a metal drill index case. The drill bits have a straight shank and spiral flute, operating with a right-hand cutting direction and requires external coolant application during use. This set includes fractional inch drill sizes from 1/16" to 1/2".

Key Features:

• Material: made from cobalt steel for enhanced durability.
• Size range: 1/16" to 1/2" in fractional inch increments.
• Point type: split point with 135-degree angle for reduced walking during drilling (split-point, 135°).
• Drill length class: screw machine length for machining applications using this drill length class.
• Shank type: straight shank for use with drill chucks that accept a straight shank (based on chuck specifications).
• Flute type: spiral flute for chip evacuation.
• Cutting direction: Right hand.
• Coolant fed: Non-coolant through, requiring external coolant application.
• Includes a metal drill index case for storage and organization.
• Depth to diameter ratio: 4x diameter.
• Tap sizes corresponding to drill sizes included in the set.