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

SKU 3G-OTH-190522

Brand
CHICAGO-LATROBE
Item
Jobber Length Drill Bit: Letter H, 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
42778
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 42778 used for?

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

What are the specifications of the CHICAGO-LATROBE 42778 drill bit?

The CHICAGO-LATROBE 42778 is a Letter H jobber length drill bit with a 0.2660 inch diameter, 135° split point, and TiAlN-coated high-speed steel construction. It meets NAS specifications for aerospace applications.

Where to buy CHICAGO-LATROBE 42778 drill bits worldwide?

3G Electric supplies CHICAGO-LATROBE 42778 drill bits worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this aerospace-grade tool.

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

For aerospace drilling, choose a TiAlN-coated HSS bit like the CHICAGO-LATROBE 42778 with a 135° split point. This coating extends tool life in hard alloys, while the split point ensures accurate starts without a center punch.

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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