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CHICAGO-LATROBE Jobber Length Drill Bit: #4, 135° Split Point, Straw/Bronze Cobalt - NAS-Spec Cobalt Jobber-Length Drill Bits for Aerospace
CHICAGO-LATROBENAS-Spec Cobalt Jobber-Length Drill Bits for Aerospace

CHICAGO-LATROBE Jobber Length Drill Bit: #4, 135° Split Point, Straw/Bronze Cobalt

The CHICAGO-LATROBE Jobber Length Drill Bit #4 is a NAS-Spec Cobalt drill bit for aerospace applications, featuring a 135° split point and Straw/Bronze Cobalt finish per NAS 907 Type B. With a diameter of 0.2090…

SKU 3G-OTH-200131

Brand
CHICAGO-LATROBE
Item
Jobber Length Drill Bit: #4, 135° Split Point, Straw/Bronze Cobalt
Category
NAS-Spec Cobalt Jobber-Length Drill Bits for Aerospace
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Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
47738
Type
Straw/Bronze Cobalt, 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 #4 is a NAS-Spec Cobalt drill bit for aerospace applications, featuring a 135° split point and Straw/Bronze Cobalt finish per NAS 907 Type B. With a diameter of 0.2090 inches (MPN 47738), it is designed for precision drilling in demanding industrial environments.

Frequently Asked Questions

What is the CHICAGO-LATROBE Jobber Length Drill Bit #4 used for?

This CHICAGO-LATROBE drill bit is designed for aerospace applications requiring NAS 907 Type B compliance. Its 135° split point and cobalt construction make it suitable for drilling hard metals like stainless steel and titanium in precision manufacturing.

What are the specifications of the CHICAGO-LATROBE 47738 drill bit?

The CHICAGO-LATROBE 47738 is a #4 jobber length drill bit with a 0.2090 inch diameter, 135° split point, and straw/bronze cobalt finish. It meets NAS 907 Type B standards for aerospace drilling tasks.

Where to buy CHICAGO-LATROBE NAS 907 drill bits worldwide?

3G Electric supplies CHICAGO-LATROBE NAS 907 Type B drill bits worldwide. We handle full logistics, customs clearance, and delivery to your facility, ensuring you receive genuine aerospace-grade tooling without supply chain delays.

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

Select based on material hardness and hole tolerance. For aerospace alloys, choose a 135° split point cobalt bit like the CHICAGO-LATROBE 47738. Match the diameter to your fastener or reaming allowance, and confirm NAS 907 compliance for critical assemblies.

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 cobalt 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
CHICAGO-LATROBE Jobber Length Drill Bit: #5, 135° Split Point, Straw/Bronze Cobalt, NAS 907 Type B (MPN 47739)
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CHICAGO-LATROBE Jobber Length Drill Bit: #34, 135° Split Point, Straw/Bronze Cobalt, NAS 907 Type B (MPN 47768)
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CHICAGO-LATROBE Jobber Length Drill Bit: #2, 135° Split Point, Straw/Bronze Cobalt, NAS 907 Type B (MPN 47736)

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