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CHICAGO-LATROBE Jobber Length Drill Bit: Letter S, 135° Split Point - NAS-Spec High-Speed Steel Jobber-Length Drill Bits for Aerospace
CHICAGO-LATROBENAS-Spec High-Speed Steel Jobber-Length Drill Bits for Aerospace

CHICAGO-LATROBE Jobber Length Drill Bit: Letter S, 135° Split Point

SKU 3G-OTH-190262

Brand
CHICAGO-LATROBE
Item
Jobber Length Drill Bit: Letter S, 135° Split Point
Category
NAS-Spec High-Speed Steel Jobber-Length Drill Bits for Aerospace
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
42789
Type
TiAlN-Coated HSS
Split Point
135°
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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the CHICAGO-LATROBE Jobber Length Drill Bit 42789 used for?

This TiAlN-coated HSS drill bit is designed for aerospace and high-precision machining applications. Its 135° split point reduces walking and thrust, making it suitable for drilling hard materials like stainless steel and titanium alloys.

What are the specifications of the CHICAGO-LATROBE 42789 drill bit?

The CHICAGO-LATROBE 42789 is a Letter S jobber length drill bit with a 0.3480 inch diameter, 135° split point, and TiAlN coating on high-speed steel. It meets NAS specs for aerospace use.

Where to buy CHICAGO-LATROBE 42789 drill bits worldwide?

3G Electric supplies CHICAGO-LATROBE 42789 drill bits worldwide. We handle full logistics and customs clearance to deliver this NAS-spec aerospace drill bit to your facility, regardless of location.

How to select the right CHICAGO-LATROBE drill bit for aerospace materials?

For aerospace alloys, choose a TiAlN-coated HSS bit like the 42789 with a 135° split point to reduce walking. Match the diameter (0.3480 inch for Letter S) to your hole size and ensure the bit meets NAS specifications for critical applications.

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 nas-spec high-speed steel jobber-length drill bits for aerospace. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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