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OSG Square End Mill: Carbide, TiAlN Coated, 4 Flute, 1/4" Mill Dia, 3/8" LOC - Pencil-Neck Carbide Square End Mills for Hardened Materials
OSGPencil-Neck Carbide Square End Mills for Hardened Materials

OSG Square End Mill: Carbide, TiAlN Coated, 4 Flute, 1/4" Mill Dia, 3/8" LOC

The OSG Square End Mill is a carbide, TiAlN-coated, 4-flute pencil-neck end mill for hardened materials, with a 1/4" mill diameter, 3/8" LOC, and 4" OAL (MPN HP411-2500). 3G Electric sources this and other precision…

SKU 3G-OTH-404063

Also listed as: HP4112500 · HP411 2500

Brand
OSG
Item
Square End Mill: Carbide, TiAlN Coated, 4 Flute, 1/4" Mill Dia, 3/8" LOC
Category
Pencil-Neck Carbide Square End Mills for Hardened Materials
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Technical specs
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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

OSG
Manufacturer Part Number
HP411-2500
Type
TiAlN Coated
Mill Dia
1/4"
OAL
4"
Flute
4
LOC
3/8"

Technical Documents

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

Product Description

The OSG Square End Mill is a carbide, TiAlN-coated, 4-flute pencil-neck end mill for hardened materials, with a 1/4" mill diameter, 3/8" LOC, and 4" OAL (MPN HP411-2500). 3G Electric sources this and other precision cutting tools across 14 industrial departments, with specialist expertise in combustion, pumps, and controls to ensure you get the right solution.

Frequently Asked Questions

What is an OSG square end mill used for?

An OSG square end mill is used for precision milling of hardened materials, such as tool steels and die steels. Its TiAlN coating and 4-flute design provide heat resistance and chip evacuation for finishing and semi-finishing operations in mold, die, and aerospace applications.

What are the specifications of the OSG HP411-2500 end mill?

The OSG HP411-2500 is a carbide square end mill with TiAlN coating, 4 flutes, 1/4" mill diameter, 3/8" length of cut, and 4" overall length. It is designed for hardened materials and features a pencil-neck geometry for deep cavity machining.

Where to buy OSG HP411-2500 end mills worldwide?

3G Electric supplies the OSG HP411-2500 end mill to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this precision carbide tool for hardened materials.

How to select the right OSG end mill for hardened steel?

For hardened steel, choose an OSG end mill with TiAlN coating for heat resistance and a 4-flute design for finish quality. Match the mill diameter to your feature size and ensure the length of cut exceeds your depth. Use rigid setups and appropriate speeds/feeds for the material hardness.

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 pencil-neck carbide square end mills for hardened materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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