YG-1Double-End High-Speed Steel Square End Mills

YG-1 Square End Mill: High Speed Steel, TiN Coated, Double End, 4 Flute, 1/8" Mill Dia

SKU 3G-OTH-250880

Also listed as: 12039 HN · 12039-HN

Brand

YG-1

Item

Square End Mill: High Speed Steel, TiN Coated, Double End, 4 Flute, 1/8" Mill Dia

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

YG-1

Manufacturer Part Number

12039HN 

Type

TiN Coated, Double End 

Mill Dia

1/8" 

Flute

4

LOC

3/8" 

Technical Documents

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YG-1 Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The YG-1 Square End Mill is a double-end high-speed steel square end mill with TiN coating, 4 flutes, a 1/8" mill diameter, and a 3/8" length of cut (MPN 12039HN). 3G Electric interprets this demand and sources the genuine YG-1 tool across 14 industrial departments — and we supply far more than is listed — with specialist depth in combustion, pumps and controls as a trust anchor.

Frequently Asked Questions

What is YG-1 12039HN square end mill used for?

The YG-1 12039HN is a double-end high-speed steel square end mill with TiN coating, designed for general-purpose milling of steel, cast iron, and non-ferrous materials. Its 4-flute design provides efficient chip evacuation and a smooth finish in slotting, profiling, and contouring applications.

What are the specifications of YG-1 12039HN end mill?

The YG-1 12039HN has a 1/8" mill diameter, 3/8" length of cut (LOC), 4 flutes, and a TiN coating. It is a double-end high-speed steel square end mill. The TiN coating increases hardness and wear resistance for longer tool life in ferrous and non-ferrous materials.

Where to buy YG-1 12039HN end mill worldwide?

3G Electric supplies the YG-1 12039HN double-end square end mill to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this TiN-coated, 4-flute, 1/8" diameter end mill.

How to select the right YG-1 end mill for my application?

Selecting the right YG-1 end mill depends on material, cut type, and finish requirements. For general-purpose steel milling, the 12039HN with TiN coating and 4 flutes offers good wear resistance. Match the mill diameter to your slot width and the length of cut to your depth needs. Consult YG-1's technical data for optimal speeds and feeds.

Used in

Common applications for YG-1

Die and mold machining — YG-1 cobalt ball end mills (e.g., MPN 43297CC) for contouring and finishing cavities in hardened tool steels.

Aerospace component production — YG-1 cobalt square end mills (e.g., MPN 04338) for milling titanium and nickel-based alloys.

Automotive part manufacturing — YG-1 HSS square end mills (e.g., MPN 07228) for high-volume machining of cast iron and steel components.

General fabrication — YG-1 double-end HSS end mills (e.g., MPN 13040) for slotting and profiling in mild steel and aluminum.

Roughing operations — YG-1 cobalt roughing end mills (e.g., MPN 60321) for rapid material removal in stainless steel and alloy steels.

Precision finishing — YG-1 TiN-coated HSS end mills (e.g., MPN 12059HN) for achieving tight tolerances on ferrous workpieces.

YG-1 Products

3G Electric supplies YG-1 double-end high-speed steel square end mills. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all YG-1 products →Contact our engineers →