Beijing Ward Yitong Technology Co., Ltd.
| Point Angle | 130° |
| Delivery Time | 4 weeks |
| Overall Size | 16.5×9.525×4.76mm |
| Flute Number | 3 Flutes |
| Hardness Hra | 91 |
| Helix Angle | 30° |
| Heat Resistance | Up to 1000°C |
| Payment Terms | T/T |
| Packaging Details | Carton with Bubble paper which is suitable for long-distance transport |
| Model Number | EX‑GDN |
| Brand Name | OSG |
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Product Specification
| Point Angle | 130° | Delivery Time | 4 weeks |
| Overall Size | 16.5×9.525×4.76mm | Flute Number | 3 Flutes |
| Hardness Hra | 91 | Helix Angle | 30° |
| Heat Resistance | Up to 1000°C | Payment Terms | T/T |
| Packaging Details | Carton with Bubble paper which is suitable for long-distance transport | Model Number | EX‑GDN |
| Brand Name | OSG | ||
| High Light | OSG EX-GDN TiN coated cobalt HSS twist drill ，deep hole drilling twist drill for carbon steel ，4×D length cobalt HSS drill with TiN coating | ||
The OSG EX‑GDN is a medium‑length cobalt high‑speed steel (HSS‑Co) drill from OSG (Japan), part of the EX‑GOLD series. It is designed for high‑speed, non‑step drilling up to 4× diameter in general carbon steel, alloy steel, and cast iron, even in small diameters. Featuring a TiN coating, 130° point angle, and 30° helix angle, it delivers good wear resistance, stable chip evacuation, and long tool life in general‑purpose CNC and manual drilling.
| Item | Parameter |
|---|---|
| Model | OSG EX‑GDN |
| Product Type | Medium‑Length Cobalt HSS Twist Drill |
| Series | EX‑GOLD (General‑Purpose Drilling) |
| Diameter Range | φ0.5 mm – φ3.9 mm한국OSG주식회사 |
| Flute Length | Medium (stub < ℓ < regular) |
| Overall Length | 39–65 mm (depending on diameter) |
| Point Angle | 130° |
| Helix Angle | 30° |
| Substrate | Cobalt High‑Speed Steel (HSS‑Co) |
| Coating | TiN (golden) |
| Shank Type | Straight (h7 tolerance) |
| Drill Diameter Tolerance | h8 |
| Oil Hole | None |
| Country of Origin | Japan |
As a versatile medium‑length drill for steel and cast iron, it combines cobalt HSS toughness, TiN wear resistance, and 4×D non‑step drilling capability for stable performance and low cost. OSG’s Japanese precision ensures consistent quality for general‑purpose production.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2005
Total Annual:
10000000-50000000
Employee Number:
>50
Ecer Certification：
Verified Supplier
For over 20 years, Trek Brand has been dedicated to the business of cutting tools. Our main focus is on wholesale distribution of renowned brands such as Walter, Hoffman, Mitsubishi, Taegutec, Tungaloy, OSG, and most importantly, China. We offer a comprehensive one-stop shopping experience for CNC c... For over 20 years, Trek Brand has been dedicated to the business of cutting tools. Our main focus is on wholesale distribution of renowned brands such as Walter, Hoffman, Mitsubishi, Taegutec, Tungaloy, OSG, and most importantly, China. We offer a comprehensive one-stop shopping experience for CNC c...
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