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CHICAGO-LATROBE Jobber Length Drill Bit: #39, 135° Split Point, TiAlN-Coated HSS - 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: #39, 135° Split Point, TiAlN-Coated HSS

The CHICAGO-LATROBE Jobber Length Drill Bit (#39) is a NAS-Spec High-Speed Steel drill bit for aerospace applications, featuring a TiAlN-coated HSS construction with a 135° split point per NAS 907 Type B. With a…

SKU 3G-OTH-190025

Brand
CHICAGO-LATROBE
Item
Jobber Length Drill Bit: #39, 135° Split Point, TiAlN-Coated HSS
Category
NAS-Spec High-Speed Steel Jobber-Length Drill Bits for Aerospace
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
42709
Type
TiAlN-Coated HSS, NAS 907 Type B
Split Point
135°

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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CHICAGO-LATROBE Jobber Length Drill Bit (#39) is a NAS-Spec High-Speed Steel drill bit for aerospace applications, featuring a TiAlN-coated HSS construction with a 135° split point per NAS 907 Type B. With a diameter of 0.0995 inches (MPN 42709), this tool is designed for precision drilling in demanding industrial environments.

Frequently Asked Questions

What is the CHICAGO-LATROBE #39 jobber length drill bit used for?

This drill bit is designed for aerospace applications requiring NAS 907 Type B compliance. Its 135° split point reduces walking on curved surfaces, while the TiAlN coating extends tool life in high-temperature alloys. It is suitable for precision hole drilling in aircraft-grade materials.

What are the specifications of the CHICAGO-LATROBE 42709 drill bit?

The CHICAGO-LATROBE 42709 is a #39 jobber length drill bit with a 0.0995-inch diameter, 135° split point, and TiAlN-coated high-speed steel. It meets NAS 907 Type B standards for aerospace drilling. The split point geometry reduces thrust and improves hole accuracy.

Where to buy CHICAGO-LATROBE drill bits worldwide?

3G Electric supplies CHICAGO-LATROBE drill bits worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead times on the 42709 and other NAS-spec tooling.

How to select the correct jobber length drill bit for aerospace work?

Select a bit that meets NAS 907 Type B or equivalent specs, with a split point for precision and coating for heat resistance. Match the diameter to your hole tolerance. For high-strength alloys, TiAlN-coated HSS like the CHICAGO-LATROBE 42709 provides extended tool life.

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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Cross-referenced by specification & description
CHICAGO-LATROBE Jobber Length Drill Bit: #49, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42719)
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CHICAGO-LATROBE Jobber Length Drill Bit: #49, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42719)
CHICAGO-LATROBE Jobber Length Drill Bit: #38, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42708)
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CHICAGO-LATROBE Jobber Length Drill Bit: #38, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42708)
CHICAGO-LATROBE Jobber Length Drill Bit: #40, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42710)
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CHICAGO-LATROBE Jobber Length Drill Bit: #40, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42710)
CHICAGO-LATROBE Jobber Length Drill Bit: #48, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42718)
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CHICAGO-LATROBE Jobber Length Drill Bit: #48, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42718)
CHICAGO-LATROBE Jobber Length Drill Bit: #37, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42707)
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CHICAGO-LATROBE Jobber Length Drill Bit: #37, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42707)
CHICAGO-LATROBE Jobber Length Drill Bit: #34, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42704)
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CHICAGO-LATROBE Jobber Length Drill Bit: #34, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42704)

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