CHICAGO-LATROBEGeneral Purpose Cobalt Screw-Machine Length Drill Bits

CHICAGO-LATROBE Screw Machine Drill Bit: 4.2 mm, 135° Split Point

The CHICAGO-LATROBE Screw Machine Drill Bit (MPN 49010) is a 4.2 mm general purpose cobalt screw-machine length drill bit with a 135° split point and straw/bronze cobalt finish. Key specification attr1233209 is 0.1654.

SKU 3G-OTH-409563

Brand

CHICAGO-LATROBE

Item

Screw Machine Drill Bit: 4.2 mm, 135° Split Point

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

49010

Type

Straw/Bronze Cobalt 

Split Point

135° 

View Full Spec Sheet

Technical Documents

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CHICAGO-LATROBE Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the CHICAGO-LATROBE 49010 screw machine drill bit used for?

The CHICAGO-LATROBE 49010 is a general-purpose cobalt screw-machine length drill bit used for precision drilling in metalworking. Its 135° split point reduces walking and thrust, making it suitable for automated lathes and CNC machines. The straw/bronze cobalt finish provides heat resistance and durability for ferrous materials.

What are the specifications of the CHICAGO-LATROBE 49010 drill bit?

The CHICAGO-LATROBE 49010 is a 4.2 mm diameter screw-machine length drill bit with a 135° split point and straw/bronze cobalt finish. It has a decimal equivalent of 0.1654 inches. The cobalt construction offers enhanced hardness and heat resistance for drilling tough metals.

Where to buy CHICAGO-LATROBE 49010 drill bits worldwide?

3G Electric supplies the CHICAGO-LATROBE 49010 drill bit worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this item to support your manufacturing operations.

How to select the correct CHICAGO-LATROBE screw machine drill bit?

Select the CHICAGO-LATROBE 49010 for drilling holes 4.2 mm in diameter in ferrous metals. The 135° split point is ideal for CNC and automatic machines, reducing thrust and preventing walking. For deeper holes, consider jobber-length bits. Always match the bit material to the workpiece hardness.

Used in

Common applications for CHICAGO-LATROBE

Aerospace assembly — Chicago-Latrobe NAS 907 Type B aircraft-extension drill bits for drilling fastener holes in aluminum and titanium skins.

Metal fabrication — Chicago-Latrobe reduced-shank drill bit sets for enlarging holes in structural steel using magnetic drill presses.

Maintenance repair — Chicago-Latrobe left-hand cobalt jobber-length drill bits for removing broken bolts in machinery.

Tool and die making — Chicago-Latrobe jobber-length drill bit sets with 135° split point for precision hole drilling in hardened steels.

Automotive repair — Chicago-Latrobe spiral-flute screw extractors for removing seized fasteners in engine blocks or exhaust systems.

General manufacturing — Chicago-Latrobe HSS jobber-length drill bits for production drilling in mild steel and cast iron.

CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE general purpose cobalt screw-machine length drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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