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OSG HP421-3125-BN Carbide Ball End Mill - Carbide Ball End Mills for Stainless Steel & Super Alloys
OSGCarbide Ball End Mills for Stainless Steel & Super Alloys

OSG HP421-3125-BN Carbide Ball End Mill

The OSG Ball End Mill is a carbide, TiAlN-coated, 2-flute end mill with a 5/16" mill diameter, 13/16" length of cut, and 2-1/2" overall length (MPN HP421-3125-BN).

SKU 3G-OTH-220810

Also listed as: HP4213125BN · HP421 3125 BN

Brand
OSG
Item
HP421-3125-BN Carbide Ball End Mill
Part Number
HP421-3125-BN
Category
Carbide Ball End Mills for Stainless Steel & Super Alloys
Available to Order
Also known as:HP421-3125-BNOSG
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Technical Specifications

OSG
Manufacturer Part Number
HP421-3125-BN
Type
TiAlN Coated
Mill Dia
5/16"
OAL
2-1/2"
Flute
2
LOC
13/16"

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

Product Description

The OSG Ball End Mill is a carbide, TiAlN-coated, 2-flute end mill with a 5/16" mill diameter, 13/16" length of cut, and 2-1/2" overall length (MPN HP421-3125-BN).

Frequently Asked Questions

What is the OSG HP421-3125-BN ball end mill used for?

The OSG HP421-3125-BN is a carbide ball end mill designed for precision contouring, slotting, and profiling in stainless steels and super alloys. Its TiAlN coating and 2-flute geometry provide heat resistance and chip evacuation, making it suitable for aerospace, medical, and mold-making applications.

What are the specifications of the OSG HP421-3125-BN ball end mill?

This OSG ball end mill has a 5/16" mill diameter, 13/16" length of cut, and 2-1/2" overall length. It features a TiAlN coating, 2 flutes, and is made from carbide. The manufacturer part number is HP421-3125-BN. It is engineered for stainless steel and super alloy machining.

Where to buy the OSG HP421-3125-BN ball end mill worldwide?

3G Electric supplies the OSG HP421-3125-BN ball end mill to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG tooling and provide end-to-end support for procurement and shipping.

How to select the correct ball end mill for stainless steel?

For stainless steel, choose a carbide ball end mill with a TiAlN coating for heat resistance and a 2-flute design for chip clearance. Match the mill diameter and length of cut to your operation depth. The OSG HP421-3125-BN is a proven choice for these materials. Consult your application parameters for optimal results.

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 carbide ball end mills for stainless steel & super alloys. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Carbide ball end mill with TiAlN coating and 2 flutes. Mill diameter 3/16", length of cut 5/8", overall length 2". Designed for contouring, slotting, and profiling in stainless steel and super alloys

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