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CHICAGO-LATROBE Jobber Length Drill Bit: 5/16", 135° Split Point - 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: 5/16", 135° Split Point

The CHICAGO-LATROBE Jobber Length Drill Bit (MPN 47720) is a 5/16" NAS-Spec Cobalt Jobber-Length Drill Bit for Aerospace, featuring a 135° split point and Straw/Bronze Cobalt construction. With a diameter of 0.3125…

SKU 3G-OTH-200013

Brand
CHICAGO-LATROBE
Item
Jobber Length Drill Bit: 5/16", 135° Split Point
Category
NAS-Spec Cobalt Jobber-Length Drill Bits for Aerospace
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
47720
Type
Straw/Bronze Cobalt
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 47720) is a 5/16" NAS-Spec Cobalt Jobber-Length Drill Bit for Aerospace, featuring a 135° split point and Straw/Bronze Cobalt construction. With a diameter of 0.3125 inches, this bit is designed for demanding aerospace applications. 3G Electric interprets customer demand and delivers this genuine industrial tool across 14 departments — and far more — with specialist depth in combustion, pumps and controls as a trust anchor, not a limit.

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 47720 drill bit used for?

The CHICAGO-LATROBE 47720 is a NAS-spec cobalt jobber-length drill bit designed for aerospace applications. Its 135° split point reduces walking and drilling force, making it suitable for hard metals like stainless steel and titanium. The straw/bronze cobalt finish provides heat resistance and extended tool life.

What are the specifications of the CHICAGO-LATROBE 47720 drill bit?

The CHICAGO-LATROBE 47720 is a 5/16" (0.3125 inch) jobber-length drill bit with a 135° split point and straw/bronze cobalt finish. It meets NAS specifications for aerospace use. The cobalt construction enhances hardness and heat tolerance for demanding drilling tasks.

Where to buy CHICAGO-LATROBE 47720 drill bits worldwide?

3G Electric supplies the CHICAGO-LATROBE 47720 drill bit worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this NAS-spec cobalt drill bit.

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

For aerospace drilling, choose a NAS-spec cobalt bit like the CHICAGO-LATROBE 47720 with a 135° split point to prevent walking on hard surfaces. Match the diameter (5/16") to your hole size and ensure the cobalt finish suits high-heat materials. Always use proper cutting fluid and speeds for cobalt tooling.

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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