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CHICAGO-LATROBE Jobber Length Drill Bit: 21/64", 135° Split Point, Straw/Bronze Cobalt - Left-Hand Cobalt Jobber-Length Drill Bits
CHICAGO-LATROBELeft-Hand Cobalt Jobber-Length Drill Bits

CHICAGO-LATROBE Jobber Length Drill Bit: 21/64", 135° Split Point, Straw/Bronze Cobalt

The CHICAGO-LATROBE Jobber Length Drill Bit (MPN 46521) is a 21/64" left-hand cobalt jobber-length drill bit with a 135° split point and straw/bronze cobalt finish. It is designed for drilling applications requiring…

SKU 3G-OTH-251077

Brand
CHICAGO-LATROBE
Item
Jobber Length Drill Bit: 21/64", 135° Split Point, Straw/Bronze Cobalt
Category
Left-Hand Cobalt Jobber-Length Drill Bits
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
46521
Type
Straw/Bronze Cobalt, Left Hand
Split Point
135°

Technical Documents

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

Product Description

The CHICAGO-LATROBE Jobber Length Drill Bit (MPN 46521) is a 21/64" left-hand cobalt jobber-length drill bit with a 135° split point and straw/bronze cobalt finish. It is designed for drilling applications requiring left-hand rotation, with a diameter of 0.3281 inches.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the CHICAGO-LATROBE 46521 drill bit used for?

The CHICAGO-LATROBE 46521 is a left-hand cobalt jobber-length drill bit used for drilling into hard metals such as stainless steel and alloy steels. Its 135° split point reduces walking and improves cutting accuracy, making it ideal for maintenance, toolmaking, and production environments where reverse rotation is needed.

What are the specifications of the CHICAGO-LATROBE 46521 drill bit?

The CHICAGO-LATROBE 46521 is a jobber-length drill bit with a 21/64" diameter (0.3281 inch), 135° split point, and straw/bronze cobalt finish. It is a left-hand design, suitable for drilling in reverse rotation. The cobalt construction provides heat resistance and durability for hard-metal applications.

Where to buy CHICAGO-LATROBE 46521 drill bits worldwide?

3G Electric supplies the CHICAGO-LATROBE 46521 left-hand cobalt 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 any country.

How to select the correct left-hand drill bit for reverse drilling?

Select a left-hand drill bit like the CHICAGO-LATROBE 46521 when you need to drill in reverse rotation, often used to extract broken fasteners. Match the diameter (21/64") to your hole size and choose cobalt for hard metals. The 135° split point helps start the hole 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 left-hand cobalt jobber-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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Compatible alternatives & equivalents

Cross-referenced by specification & description
CHICAGO-LATROBE Jobber Length Drill Bit: 23/64", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46523)
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CHICAGO-LATROBE Jobber Length Drill Bit: 23/64", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46523)
CHICAGO-LATROBE Jobber Length Drill Bit: 19/64", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46519)
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CHICAGO-LATROBE Jobber Length Drill Bit: 19/64", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46519)
CHICAGO-LATROBE Jobber Length Drill Bit: 25/64", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46525)
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CHICAGO-LATROBE Jobber Length Drill Bit: 25/64", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46525)
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CHICAGO-LATROBE Jobber Length Drill Bit: 5/16", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46520)
CHICAGO-LATROBE Jobber Length Drill Bit: 13/32", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46526)
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CHICAGO-LATROBE Jobber Length Drill Bit: 13/32", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46526)
CHICAGO-LATROBE Jobber Length Drill Bit: 11/32", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46522)
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CHICAGO-LATROBE Jobber Length Drill Bit: 11/32", 135° Split Point, Straw/Bronze Cobalt, Left Hand (MPN 46522)

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