Top DIN 338 Drill Bit Manufacturer | Secure YOUR Supply

Tired of bad quality and delay shipments?

When you source hardware tools, inconsistent quality and delayed factory deliveries destroy your profit. Your wholesale buyers demand precision, durability, and reliability. If your current supplier delivers brittle drill bits or misses shipping deadlines, your brand reputation is broken. You need a real factory that understands the B2B import business.

We are a direct manufacturer of DIN 338 twist drill bits, producing from 0.2mm to 20mm in HSS, HSS-G, M2, and Cobalt M35/M42. We provide OEM branding, custom packaging, and stable bulk supply for global distributors.

I understand how a single bad batch can cost you customers. That's why we focus on consistent manufacturing quality, strict material verification, and reliable delivery schedules. Let me explain how our factory capabilities can secure your supply chain and protect your brand.

Why You Need a Reliable DIN 338 Drill Bit Manufacturer to Secure Your Supply

In the competitive hardware market, your supply chain is your biggest advantage. Choosing the right source factory means the difference between steady retail reorders and costly customer returns.

You must partner with a factory that maintains sufficient raw material stock and a proven quality system. We maintain large HSS steel inventory and follow a strict 7-step QC process to ensure zero complaints and on-time delivery.

A reliable supply chain protects your business from raw material to shipment. We build quality checks into every stage so you can trust every container leaving our facility.

Guarantee Your Inventory with Our Sufficient B2B Wholesale Stock

Stockouts mean lost sales¹ for your business. When your distributors need DIN 338 drill bits, you cannot afford to wait months for production. We maintain a massive raw material inventory of high-speed steel (HSS) and a highly efficient production schedule. This ensures that even when global steel supply unstable, your bulk orders keep moving successfully. You get a continuous, reliable flow of inventory to keep your warehouses stocked and your retail partners satisfied.

How Our Strict 7-Step Quality System Protects Your Brand Reputation

Your brand name is etched on the tools. If a drill bit snaps on the first use, your customer blames you. We protect your reputation through a serious 7-step quality control system:

1. Raw Material Inspection: We strictly test incoming steel for correct alloy composition.
2. Length & Diameter Verification: Ensuring every batch meets strict DIN 338 h8 tolerances.
3. Hardness Testing: Post-heat treatment checks guarantee optimal HRC levels.
4. Torsion Testing: Measuring the twisting force to prevent breakage under heavy loads.
5. Concentricity Checks: Guaranteeing straight, wobble-free drilling for your end-users.
6. Surface Finish Inspection: Ensuring uniform coatings (TiN, Black Oxide) with zero defects.
7. Final Packaging Audit: Verifying your custom labels and boxes before container loading.

Tenyu Tool's 15+ Years of Expertise: Ensure Your On-Time Deliveries

With 15+ years of experience in the foreign trade hardware industry, we understand the complexities of international logistics. We know that missing a sailing schedule losts your money. Our deep expertise in manufacturing optimization means we accurately quote lead times. You get precise production schedules, transparent updates, and seamless communication, ensuring your containers arrive exactly when you expect them.

Discover Your Complete Range of DIN 338 Specifications (0.2mm - 20mm)

Your market requires variety. Whether your clients are drilling soft plastics or hardened stainless steel, you need a complete product. We manufacture the full spectrum of DIN 338 straight shank twist drill bits.

You must offer the right material grade and finish for each application. HSS-G M2 with a 135° split point is best for professional metalworking, while HSS-R rolled bits suit general construction work.

Choosing the correct grade for your market protects your profits. We help you select the optimal combination of material, coating, and point angle for your target customers.

DIN 338 Drill Bit Technical Data Matrix for Your Reference

HSS Rolled & Polished: Maximize Your Margins on General Steel and Cast Iron Drilling

For your price-sensitive markets, roll-forged HSS drill bits offer the highest ROI. The heated rolling process maintains the grain structure of the steel, making the bit highly elastic and resistant.

• Target Application: General steel, cast iron, wood, and plastics.
• Your Advantage: High volume, cost-effective purchasing to maximize your wholesale margins.

HSS Fully Ground M2 (6542): the Advantage of 135° Split Point

When your professional buyers demand higher precision, upgrade them to our fully ground M2 (6542) drill bits. Machined from a single solid blank, these bits offer superior concentricity.

• The 135° Split Point: This feature prevents the drill bit from "walking" or slipping on smooth surfaces. It starts cutting immediately upon contact.
• Your Advantage: Lower cutting resistance and faster chip removal mean your clients get the job done faster, ensuring repeat purchases for your brand.

HSS-E Cobalt (M35/M42): Drilling Solutions for Stainless Steel

Standard HSS fails under the extreme heat generated by drilling hard alloys. By adding 5% (M35) or 8% (M42) Cobalt to the steel matrix, these drill bits withstand incredibly high temperatures without losing their cutting edge.

• Target Application: Stainless steel (Inox), titanium, high-tensile steel, and weld seams.
• Your Advantage: Position your brand at the premium end of the market by offering a high-performance solution that solves the toughest drilling challenges.

An Advanced Manufacturing & Inspection Behind Your Premium Drill Bits

To give you a competitive edge, we invest heavily in modern manufacturing technology. Your drill bits are produced using advanced machinery that guarantees consistency across millions of units.

You must verify that your factory uses proper heat treatment and CNC grinding. Our salt bath process ensures uniform hardness, and our 5-axis inspection verifies micro-geometry for maximum anti-torsion strength.

Advanced manufacturing protects your brand from field failures. We invest in precision equipment so every bit performs as expected.

Step-by-Step Precision: From Raw Material Cutting to Your Perfect Flute Edge Grinding

Our manufacturing is not just about shaping metal; it is about engineering a cutting tool.

• Precision Cutting: Steel blanks are cut to exact DIN 338 standard length³.
• Salt Bath Heat Treatment: We use a controlled salt bath process. This ensures uniform hardness throughout the entire bit, eliminating brittle spots that cause breakage.
• CNC Flute Grinding: Our automated CNC machines grind the flutes with exact geometry, ensuring optimal spiral angles for efficient chip ejection.

5-Axis Inspection & Profile Measuring: Ensuring Your Tools Have Maximum Anti-Torsion Capability

We do not guess on quality; we measure it. Using advanced 5-axis profile measuring equipment, we inspect the micro-geometry of the drill bits. We verify the web thickness, flute depth, and chisel edge angles. This meticulous inspection process ensures that every bit you sell has maximum anti-torsion strength, preventing snapping during heavy torque applications.

The Right Point Angle for Your Market: Choosing Between 118° and 135°

Different materials require different approaches. We help you customize your order based on your target market:

• 118° Point Angle: Ideal for general-purpose drilling in softer materials. The wider cutting edge is durable and easy to resharpen.
• 135° Split Point Angle: Essential for hard materials. The flatter point reduces the required feed pressure, making it easier for your end-users to drill through tough metals without pre-punching.

Customize Your OEM Brand and Streamline Your Logistics

We are not just a manufacturer. We are your behind-the-scenes production partner. We offer complete OEM and ODM services, ensuring the products arrive fully branded and ready for your retail shelves.

You must build your own brand to escape price wars. We provide laser engraving, multiple surface finishes, and custom packaging so you can offer a branded catalog that commands higher margins.

Building your brand protects your business from pure price competition. We handle the manufacturing and branding so you can focus on distribution and sales.

Stand Out on the Shelf with Your Custom Surface Finishes

The visual appeal of your tools drives retail sales. We offer multiple surface treatments that not only look professional but also enhance tool life:

• Black Oxide: Economical, holds lubricants well, and resists corrosion.
• Bright/Polished Finish: Clean, professional look for aluminum and non-ferrous metals.
• TiN Coated (Titanium Nitride): The classic gold finish. It dramatically increases surface hardness and reduces friction⁴.
• Amber/Coffee Color: The signature look for high-grade Cobalt drill bits, instantly recognizable by professional buyers.
• Rainbow Finish: PVD coating for a unique, premium shelf presence.

Packaging Built for Your Distributors: Boxes, Sets, and Container Delivery

Packaging is just as important as the tool itself. We tailor the packaging to suit your sales channels:

• Bulk Packaging: PVC bags and plastic boxes for industrial users and assembly lines.
• Retail Ready: Blister cards, plastic tubes, and hang tags for hardware store displays.
• Premium Sets: High-quality metal box sets (e.g., 19-piece, 25-piece, 170-piece) and plastic boxes to increase your average order value.
• Custom Branding: We laser-print your logo directly onto the shank of every drill bit and design custom color boxes with your branding.

Once packaged, our logistics team optimizes container loading to maximize your shipping efficiency, whether you require fast air freight for urgent restocks or cost-effective FCL sea freight.

FAQ: Frequently Asked Questions for B2B Buyers

1. What is the MOQ for DIN 338 drill bits?

Our standard MOQ depends on sizing and packaging. However, we are flexible with new B2B partners. We support trial orders so you can test our quality before committing to full container loads. Contact us with your exact requirements for a precise MOQ.

2. Can you laser print my company logo on the drill bits?

Yes. We provide full OEM services. We can laser etch your logo, the size, and the steel grade directly onto the shank, ensuring your brand is permanently visible to the end-user.

3. What is the standard lead time for a bulk order?

For standard production of DIN 338 drill bits, the lead time is 30 to 45 days for a 20ft container. If you need urgent delivery, our raw material stock allows us to expedite certain orders.

4. How do I know I am getting real Cobalt (M35/M42) and not just a coated bit?

We guarantee our material composition. We use strict raw material spectrum analysis before production. We welcome third-party SGS inspections or your own laboratory testing. Our M35 and M42 drill bits are solid alloyed steel, providing genuine high-heat resistance.

5. Do you offer customized metal box sets for retail?

Yes. We offer a wide variety of indexing cases, including 13-piece, 19-piece, and 25-piece metal box sets, as well as plastic boxes. You can customize the internal layout, color of the box, and outer branded stickers to match your retail strategy.

6. Can I combine DIN 338 bits with other drill standards in one order?

Yes. Many clients combine DIN 338 with DIN 1897, DIN 340, or saw blades in a single container. This lowers your freight costs and streamlines your import process.

Conclusion

Securing a reliable supply of DIN 338 drill bits is critical for scaling your wholesale hardware business. By partnering with us, you eliminate the risks of poor quality, delayed shipments, and weak packaging. Request your free samples today and experience the quality firsthand.