We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

CHICAGO-LATROBE Jobber Length Drill Bit: 21/64", 135° Split Point, TiCN-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: 21/64", 135° Split Point, TiCN-Coated HSS

The CHICAGO-LATROBE Jobber Length Drill Bit (21/64", MPN 43621) is a NAS-Spec high-speed steel drill bit for aerospace applications, featuring a 135° split point and TiCN coating. With a diameter of 0.3281 inches, it…

SKU 3G-OTH-190473

Brand
CHICAGO-LATROBE
Item
Jobber Length Drill Bit: 21/64", 135° Split Point, TiCN-Coated HSS
Category
NAS-Spec High-Speed Steel Jobber-Length Drill Bits for Aerospace
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
43621
Type
TiCN-Coated HSS, NAS 907 Type B
Split Point
135°

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The CHICAGO-LATROBE Jobber Length Drill Bit (21/64", MPN 43621) is a NAS-Spec high-speed steel drill bit for aerospace applications, featuring a 135° split point and TiCN coating. With a diameter of 0.3281 inches, it meets NAS 907 Type B standards for precision drilling in demanding industrial environments.

Frequently Asked Questions

What is the CHICAGO-LATROBE 43621 drill bit used for?

This jobber-length drill bit is designed for aerospace applications requiring NAS 907 Type B compliance. Its 135° split point reduces walking and thrust, while the TiCN coating extends tool life in high-speed steel drilling of hardened materials.

What are the specifications of the CHICAGO-LATROBE 43621 drill bit?

The CHICAGO-LATROBE 43621 is a jobber-length drill bit with a 21/64" diameter (0.3281 inches), 135° split point, TiCN-coated high-speed steel, and meets NAS 907 Type B standards. It is designed for precision drilling in aerospace-grade materials.

Where to buy CHICAGO-LATROBE 43621 drill bits worldwide?

3G Electric supplies the CHICAGO-LATROBE 43621 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.

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

Select based on material hardness and hole tolerance. The 43621's TiCN coating suits abrasive alloys, while the 135° split point aids self-centering. For NAS 907 Type B compliance, verify diameter and shank dimensions match your application.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
CHICAGO-LATROBE Jobber Length Drill Bit: 31/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43631)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 31/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43631)
CHICAGO-LATROBE Jobber Length Drill Bit: 19/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43619)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 19/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43619)
CHICAGO-LATROBE Jobber Length Drill Bit: 23/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43623)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 23/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43623)
CHICAGO-LATROBE Jobber Length Drill Bit: 9/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43609)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 9/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43609)
CHICAGO-LATROBE Jobber Length Drill Bit: 5/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43605)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 5/64", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43605)
CHICAGO-LATROBE Jobber Length Drill Bit: 7/32", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43614)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 7/32", 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43614)

More from CHICAGO-LATROBE

View all CHICAGO-LATROBE parts
CHICAGO-LATROBE Jobber Length Drill Bit: #16, 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45686)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: #16, 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45686)
CHICAGO-LATROBE Jobber Length Drill Bit: #18, 135° Split Point, TiN-Coated HSS, NAS 907 Type B (MPN 41688)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: #18, 135° Split Point, TiN-Coated HSS, NAS 907 Type B (MPN 41688)
CHICAGO-LATROBE Jobber Length Drill Bit: #47, 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43717)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: #47, 135° Split Point, TiCN-Coated HSS, NAS 907 Type B (MPN 43717)
CHICAGO-LATROBE Jobber Length Drill Bit: #13, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42683)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: #13, 135° Split Point, TiAlN-Coated HSS, NAS 907 Type B (MPN 42683)
CHICAGO-LATROBE Jobber Length Drill Bit: 2.1 mm, 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45812)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 2.1 mm, 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45812)
CHICAGO-LATROBE Jobber Length Drill Bit: 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45784)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45784)
CHICAGO-LATROBE Jobber Length Drill Bit: Letter R, 135° Split Point, TiN-Coated HSS, NAS 907 Type B (MPN 41788)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: Letter R, 135° Split Point, TiN-Coated HSS, NAS 907 Type B (MPN 41788)
CHICAGO-LATROBE Jobber Length Drill Bit: 5 mm, 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45843)
CHICAGO-LATROBE
CHICAGO-LATROBE Jobber Length Drill Bit: 5 mm, 135° Split Point, Black Oxide HSS, NAS 907 Type B (MPN 45843)