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OSG General Purpose Cobalt Roughing End Mill - General Purpose Cobalt Roughing End Mills
OSGGeneral Purpose Cobalt Roughing End Mills

OSG General Purpose Cobalt Roughing End Mill

The OSG Roughing End Mill is a general-purpose cobalt end mill with 8 flutes, fine pitch, a 2" mill diameter, 8" length of cut, and 11-3/4" overall length (MPN 4521300). 3G Electric interprets demand and delivers…

SKU 3G-OTH-269246

Brand
OSG
Item
General Purpose Cobalt Roughing End Mill
Part Number
4521300
Category
General Purpose Cobalt Roughing End Mills
Available to Order
Also known as:4521300OSG
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Technical Specifications

OSG
Manufacturer Part Number
4521300
Type
Fine Pitch
Mill Dia
2"
OAL
11-3/4"
Flute
8
LOC
8"

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Roughing End Mill is a general-purpose cobalt end mill with 8 flutes, fine pitch, a 2" mill diameter, 8" length of cut, and 11-3/4" overall length (MPN 4521300). 3G Electric interprets demand and delivers this genuine industrial cutting tool across 14 departments — with specialist depth in combustion, pumps, and controls as an authorised distributor — ensuring you get the right answer, not just a catalog.

Frequently Asked Questions

What is the OSG 4521300 roughing end mill used for?

The OSG 4521300 is a general-purpose cobalt roughing end mill designed for heavy material removal in industrial machining. Its 8-flute fine-pitch geometry provides efficient chip evacuation and reduced vibration, making it suitable for roughing operations on steel, stainless steel, and other ferrous alloys in manufacturing and tool-and-die applications.

What are the specifications of the OSG 4521300 roughing end mill?

The OSG 4521300 is a cobalt roughing end mill with 8 flutes and fine pitch. It has a 2-inch mill diameter, 8-inch length of cut, and 11-3/4-inch overall length. The manufacturer part number is 4521300. This tool is designed for general-purpose roughing in industrial machining environments.

Where to buy the OSG 4521300 roughing end mill worldwide?

You can source the OSG 4521300 roughing end mill through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for this OSG tool.

How to select the right OSG roughing end mill for your application?

Selecting the right OSG roughing end mill involves matching the tool diameter, flute count, and length of cut to your material and machine. For heavy roughing on steel, the 8-flute fine-pitch design of the 4521300 offers stability and chip control. Always verify shank compatibility and recommended speeds/feeds from OSG for optimal performance.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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OSG Products

3G Electric supplies OSG general purpose cobalt roughing end mills. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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