
DIN 338 Fully Ground HSS Twist Drill Bit (Bright Finish)
Precision fully ground HSS twist drill engineered to DIN 338 standard with 135° split point for effortless self-centering and fast penetration in steel and alloy metals.

DIN 340 HSS Long-Length Straight Shank Twist Drill Bit
SKU: NT-DRL-105
Est. 1998 · Unit 9F-H, East Building, Haijing Center, NO.144(M) Huangpu AVE, Guangzhou, China
Extended reach DIN 340 long-series twist drill bit with parabolic chip flute geometry, engineered for deep-hole drilling through bushings and deep structural components.
| Standard | DIN 340 RN |
|---|---|
| Material | HSS M2 (6542) / HSS 4341 |
| Diameter Range | 1.5mm (0.06") – 16.0mm (1/16" – 5/8") |
| Flute Geometry | Parabolic Deep Evacuation Flute |
| size | model | length | fluteLength |
|---|---|---|---|
| 4.0mm (5/32") | NT-DRL-105-040 | 119mm (4-11/16") | 78mm (3-1/16") |
| 6.0mm (15/64") | NT-DRL-105-060 | 139mm (5-1/2") | 91mm (3-9/16") |
| 8.0mm (5/16") | NT-DRL-105-080 | 165mm (6-1/2") | 109mm (4-5/16") |
| 10.0mm (25/64") | NT-DRL-105-100 | 184mm (7-1/4") | 121mm (4-3/4") |
Injection mold water-cooling line drilling, Deep structural channel sections and hollow tube drilling, Jig and fixture bushing guided drilling
Process-by-requirement custom OEM/ODM manufacturing confirmed against buyer drawings prior to production.
Select individual or multiple dimensional models below to append directly to your B2B RFQ requisition.
| size | model | length | fluteLength | RFQ Requisition | |
|---|---|---|---|---|---|
| 4.0mm (5/32") | NT-DRL-105-040 | 119mm (4-11/16") | 78mm (3-1/16") | ||
| 6.0mm (15/64") | NT-DRL-105-060 | 139mm (5-1/2") | 91mm (3-9/16") | ||
| 8.0mm (5/16") | NT-DRL-105-080 | 165mm (6-1/2") | 109mm (4-5/16") | ||
| 10.0mm (25/64") | NT-DRL-105-100 | 184mm (7-1/4") | 121mm (4-3/4") |
Injection mold water-cooling line drilling, Deep structural channel sections and hollow tube drilling, Jig and fixture bushing guided drilling
Extended reach DIN 340 long-series twist drill bit with parabolic chip flute geometry, engineered for deep-hole drilling through bushings and deep structural components.
Manufacturing processes and technical parameters are tailored according to customer requirements. Tell us your target material, dimensions, drawings, and order quantity, and we configure the construction, bond/alloy grade, and finishing to match.
We support flexible FOB and CIF delivery at any port in China (including Guangzhou, Shenzhen, Ningbo, Shanghai, Qingdao, Tianjin, and Xiamen) with 100% pre-shipment inspection before dispatch.
Yes. Custom laser marking, color finishes, private-label retail or industrial packaging, and barcode labeling are agreed with you before production.
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Precision fully ground HSS twist drill engineered to DIN 338 standard with 135° split point for effortless self-centering and fast penetration in steel and alloy metals.

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