CHICAGO-LATROBE Screw Machine Drill Bit: 21/64", 135° Split Point
The CHICAGO-LATROBE Screw Machine Drill Bit (MPN 51818) is a 21/64" general purpose cobalt screw-machine length drill bit with a 135° split point and TiN-coated cobalt construction. It is designed for precision…
SKU 3G-OTH-409545
Need installation or engineering help?
Ask a question
Product Description
The CHICAGO-LATROBE Screw Machine Drill Bit (MPN 51818) is a 21/64" general purpose cobalt screw-machine length drill bit with a 135° split point and TiN-coated cobalt construction. It is designed for precision drilling in industrial applications, with a diameter of 0.3281 inches.
Frequently Asked Questions
What is a CHICAGO-LATROBE 51818 screw machine drill bit used for?
The CHICAGO-LATROBE 51818 is a general-purpose cobalt screw-machine-length drill bit used for precise, short-hole drilling in hard materials. Its 135° split point reduces walking, and the TiN coating extends tool life in production machining across industries like automotive and aerospace.
What are the specifications of the CHICAGO-LATROBE 51818 drill bit?
The CHICAGO-LATROBE 51818 is a TiN-coated cobalt screw-machine-length drill bit with a 21/64" (0.3281") diameter and a 135° split point. It is designed for general-purpose drilling in tough materials, offering wear resistance and reduced thrust force.
Where to buy CHICAGO-LATROBE 51818 drill bits worldwide?
3G Electric supplies CHICAGO-LATROBE 51818 drill bits worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this TiN-coated cobalt bit to your facility, ensuring you get the right tool for your application.
How to select the correct screw machine drill bit for my application?
Select a screw machine drill bit like the CHICAGO-LATROBE 51818 based on material hardness, hole depth, and finish requirements. For hard materials, choose cobalt with TiN coating and a 135° split point to reduce walking. Match diameter (21/64") and length to your machine's capacity.
Used in
Common applications for CHICAGO-LATROBECHICAGO-LATROBE Products
3G Electric supplies CHICAGO-LATROBE general purpose cobalt screw-machine length drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









