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OSG 4521100 General Purpose Cobalt Roughing End Mill - General Purpose Cobalt Roughing End Mills
OSGGeneral Purpose Cobalt Roughing End Mills

OSG 4521100 General Purpose Cobalt Roughing End Mill

The OSG Roughing End Mill is a general-purpose cobalt roughing end mill with 8 flutes, fine pitch, a 2" mill diameter, 6" length of cut, and 9-3/4" overall length (MPN 4521100). 3G Electric interprets your demand for…

SKU 3G-OTH-269198

Brand
OSG
Item
4521100 General Purpose Cobalt Roughing End Mill
Category
General Purpose Cobalt Roughing End Mills
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
4521100
Type
Fine Pitch
Mill Dia
2"
OAL
9-3/4"
Flute
8
LOC
6"

Technical Documents

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

Product Description

The OSG Roughing End Mill is a general-purpose cobalt roughing end mill with 8 flutes, fine pitch, a 2" mill diameter, 6" length of cut, and 9-3/4" overall length (MPN 4521100). 3G Electric interprets your demand for this OSG tool and delivers it across 14 industrial departments — with specialist depth in combustion, pumps and controls as a trust anchor, not a limit.

Frequently Asked Questions

What is the OSG 4521100 roughing end mill used for?

The OSG 4521100 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 high-temperature alloys in manufacturing and tool-and-die applications.

What are the specifications of the OSG 4521100 roughing end mill?

The OSG 4521100 is a cobalt roughing end mill with an 8-flute fine-pitch design. It has a 2-inch mill diameter, 6-inch length of cut, and 9-3/4-inch overall length. The manufacturer part number is 4521100. This tool is built for aggressive material removal in general-purpose industrial machining.

Where to buy the OSG 4521100 roughing end mill worldwide?

You can source the OSG 4521100 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 or stainless steel, the 4521100 with 8 flutes and fine pitch offers stability and chip control. Always verify shank compatibility and recommended speeds/feeds from OSG for optimal performance.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Roughing End Mill: Cobalt, 6 Flute, Fine Pitch, 1-3/4" Mill Dia, 4" LOC, 6-1/2" OAL (MPN 4514500)
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OSG Roughing End Mill: Cobalt, 6 Flute, Fine Pitch, 1-3/4" Mill Dia, 4" LOC, 6-1/2" OAL (MPN 4514500)
OSG Roughing End Mill: Cobalt, TiCN Coated, 5 Flute, Fine Pitch, 1" Mill Dia, 3" LOC, 5-1/2" OAL (MPN 4560708)
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OSG Roughing End Mill: Cobalt, TiCN Coated, 5 Flute, Fine Pitch, 1" Mill Dia, 3" LOC, 5-1/2" OAL (MPN 4560708)
OSG Roughing End Mill: Cobalt, TiCN Coated, 5 Flute, Fine Pitch, 1" Mill Dia, 2" LOC, 4-1/2" OAL (MPN 4560508)
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OSG Roughing End Mill: Cobalt, TiCN Coated, 5 Flute, Fine Pitch, 1" Mill Dia, 2" LOC, 4-1/2" OAL (MPN 4560508)
This OSG roughing end mill is made of cobalt steel and features 8 flutes. It has a 2-inch mill diameter, 4-inch length of cut, and 7-3/4-inch overall length. Designed for heavy material removal in industrial machining, it is suitable for roughing operations on steel, stainless steel, and other ferrous alloys in manufacturing and tool-and-die applications
OSG
This OSG roughing end mill is made of cobalt steel and features 8 flutes. It has a 2-inch mill diameter, 4-inch length of cut, and 7-3/4-inch overall length. Designed for heavy material removal in industrial machining, it is suitable for roughing operations on steel, stainless steel, and other ferrous alloys in manufacturing and tool-and-die applications
OSG Roughing End Mill: Cobalt, 3 Flute, Fine Pitch, 1/4" Mill Dia, 3/4" LOC, 2-1/2" OAL (MPN 4509100)
OSG
OSG Roughing End Mill: Cobalt, 3 Flute, Fine Pitch, 1/4" Mill Dia, 3/4" LOC, 2-1/2" OAL (MPN 4509100)
OSG Roughing End Mill: Cobalt, 3 Flute, Fine Pitch, 5/16" Mill Dia, 3/4" LOC, 2-1/2" OAL (MPN 4509400)
OSG
OSG Roughing End Mill: Cobalt, 3 Flute, Fine Pitch, 5/16" Mill Dia, 3/4" LOC, 2-1/2" OAL (MPN 4509400)

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Cobalt roughing end mill with TiCN coating and fine-pitch geometry for heavy material removal in ferrous metals. Six flutes and 1-1/4" diameter support high-feed roughing operations in mold, die, and general machining. Length of cut is 2", overall length 4-1/2"
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Cobalt roughing end mill with 3/16" diameter, 1/2" length of cut, and 2-3/8" overall length. Features 4 flutes with fine pitch design for aggressive material removal in ferrous and non-ferrous metals. Suitable for roughing operations in general machining applications
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