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SUBORUI 1/4 Inch HSS Fully Ground Titanium Coated Metal Hex Shank Twist Drill Bit ISO Certified Customizable OEM
Product Description
Hex Shank METAL DRILL BITS
- Fully-ground manufacturing process
- Right-hand cutting, type N flute
- 5% Cobalt alloy composition
- 135° conical section self-centering point
- Cross-ground finish compliant with DIN 1412 C (from Ø 3.0 mm)
- Precision diametral tolerance h8
- Optimized for high-strength materials above 800 N/mm²
- Suitable for special alloys and solder-resistant steel
- Engineered for 304 Stainless Steel drilling
- Compatible with all rotary and percussion drilling machines
- Designed for mechanical processing and stationary machinery
Technical Specifications
| Product Name | Hex Shank HSS Drill Bits |
| Material | M35 (Cobalt 5%), M42 (Cobalt 8%), HSS M2, HSS 4241, HSS 4341 |
| Surface Finish | Black Oxide / Titanium / Bright / Black & Gold / Amber |
| Point Angle | 118° / 135° |
| Process | Fully Ground, Milled, Rolled |
| Standard | DIN 338, DIN 340, DIN 1897, DIN 1869, Jobber Length, Aircraft Extension |
| Point Type | 118 Degree Regular Point (1-3mm), 135 Degree Split Point (3-20mm), Turbomax Point, Chip Breaker Point, Pilot Point, Point For Weld Spot |
| Shank Type | Straight Shank, Reduced Shank, 1/2 Reduced Shank, Tri-Flats Shank, DIN 3126.C Hex Shank, DIN 3126.E Hex Shank, Double R Hex Shank, Morse Taper Shank, Threaded Hex Shank |
| Size Range | 1 - 20 mm, 1/16" - 1", A - Z, 1# - 90# |
| Package Options | Skin Card, Sticker, Slide Card, Blister Card, Double Blister Card, Color Label Bag, PVC Bag, Plastic Box, Hang Bag, Poly Bag, Sandwich Packaging |
| Delivery Time | 3 - 30 days according to order quantity |
Main Product Variations & Length Standards
DIN 338
Jobber Standard
DIN 340
Long Series
DIN 1897
Stub Length
DIN 1869
Extra Long Series
Aircraft Extension
Deep Hole Drilling
Double End Drill Bit
Dual Cutting Edge
Surface Finish Treatments
Bright
Polished Ground
Amber
Straw Finish
Black & Gold
High Durability
Titanium
TiN Coated
Black Oxide
Anti-Corrosion
Titanium & Bright
Dual Performance
Available Shank Types
Tri-Flats Shank
Non-Slip Grip
Hex Shank
Quick-Release Standard
Double R Hex Shank
Impact Rated
Reduced Shank
Chucked Versatility
1/2 Reduced Shank
Large Diameter Drilling
Morse Taper Shank
Industrial Lathe / Press
Frequently Asked Questions (FAQ)
What metals and materials are suitable for these drill bits?
These drill bits, manufactured with M35 (5% Cobalt) or M42 (8% Cobalt), are specifically designed to drill tough, tensile materials exceeding 800 N/mm². They perform exceptionally well in 304 stainless steel, alloy steels, solder-resistant metals, cast iron, and hard non-ferrous metals.
What are the advantages of the 135° split point over a 118° regular point?
The 135° split point features self-centering capability to prevent "walking" or slipping on smooth metal surfaces without needing a center punch. It requires less feed thrust and cuts into hard metals faster with reduced heat buildup compared to a standard 118° point.
What types of machines can accommodate these hex shank bits?
The standard 1/4" hex shank (DIN 3126 standard) is compatible with cordless impact drivers, battery-powered screwdrivers, magnetic drill stands, conventional hand rotary drills, and automated industrial machining centers.
How does surface coating affect drill bit performance?
Different surface finishes enhance specific characteristics: Titanium (TiN) coating dramatically reduces friction and resists extreme cutting heat; Black Oxide provides premium corrosion resistance and lubricant retention; Bright finish offers precise tolerances for general machining.
Can you provide custom branding, sizing, and packaging?
Yes, we offer complete OEM and ODM customization services. Custom specifications include laser-etched logos, bespoke dimensional lengths, fractional or metric sizes, and dedicated retail packaging like blister cards, plastic cases, or custom color boxes.
What is your typical lead time for wholesale orders?
Production and delivery timelines generally range between 3 to 30 days depending on the final order quantity, custom packaging needs, and specific material grades requested.
