410/304 Stainless Steel Countersunk Self-Drilling Screws Cross Flat Head Self-Tapping Drill Tail Screws

Name: Stainless Steel Countersunk Phillips Self-Drilling Tek Screw
Material: 410 Stainless Steel / 304 Stainless Steel
Standard: DIN 7504P / ANSI / ASME
Grade: 410 (high hardness, high self-drilling torque); 304 (A2-70)
Sizes: M3.5, M4.2, M4.8, M5.5, M6.3 (American Standard #6, #8, #10, #12, #14), Length: 13mm to 120mm
Surface Treatment: Electropolished / Passivation Treatment
Design Features: Self-drilling tin can eliminate the need for pre-drilling; countersunk head for a smooth fit; dual material options of 410 and 304 stainless steel; tight threaded anti-slip interlocking; mirror passivation for rust prevention.
Applications: Light steel keel and steel structure ceilings; furniture and sheet metal assembly; metal doors, windows and curtain wall installation; automobile and vehicle manufacturing; outdoor advertising and signage.
Delivery Time: 15-30 days after receiving advance payment
Origin: China
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable
Samples: Available
Packaging: Boxed/Bulk/Pallet or customized packaging
OEM: Available

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Key Features

Our stainless steel countersunk Phillips self‑drilling screws (flat head drill tail self‑tapping screws) are available in two material options: 410 stainless steel (high hardness, high drilling torque) and 304 stainless steel (A2-70, excellent corrosion resistance). The self‑drilling drill point penetrates light‑gauge steel and sheet metal directly – no pre‑drilling required – completing drilling, tapping, and fastening in one operation. The countersunk head sits flush with the workpiece surface for a smooth, neat finish that doesn't interfere with subsequent processes. The tight‑pitch threads provide anti‑slip bite and vibration resistance. Sizes M3.5‑M6.3 (Imperial #6‑#14), lengths 13‑120mm custom. Ideal for light steel stud ceilings, furniture sheet metal, metal doors/windows/curtain walls, automotive manufacturing, and outdoor signage. Installation: drive directly with an electric drill or impact driver – the drill point creates the hole while the head sinks flush.

Precision Manufacturing Process

We use a cold heading + point grinding + precision thread rolling composite process. The screw head is cold headed to form the countersunk head and Phillips recess in one stroke; the self‑drilling point is ground by CNC equipment to symmetrical cutting edges (angle tolerance ±2°) for smooth drilling. Threads are high‑speed planetary rolled (6g accuracy) – full profile. 410 material undergoes vacuum quenching + tempering (hardness HRC 38-45) for wear‑resistant drill points; 304 material is solution treated + passivated to maintain corrosion resistance. Surface finishing: electropolishing/passivation (salt spray ≥240h) – mirror finish. Each batch is sampled for drilling performance (drilling time and torque in standard steel sheets), tensile strength, and salt spray testing, complying with DIN/ANSI standards.

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Transparency & Customization

Each carton of screws comes with a full inspection report (material spectroscopy, hardness, driving torque, tensile strength, salt spray duration). The package QR code traces back to the cold heading machine, grinding line, thread rolling batch, and heat treatment furnace number. Our website shows installation videos and typical failure cases (e.g., drill point breakage, countersunk head fracture).

Customization options: Accept non‑standard length, drill point length, thread pitch, and head colour marking (red/blue/green). 410 and 304 can be mixed in one order (same size, different materials). Surface treatment offers colour passivation (blue/yellow) or nickel plating (decorative grade). Recess can be changed to Pozi or Torx. Mixed standards (DIN/ANSI/GB/ISO) supported. Matching depth‑stop sockets (countersink depth control) available. Minimum order quantity: 10,000 pieces; sample lead time 5 days. Upload a drawing for a 24‑hour DFM analysis and quotation.

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Stainless Steel · Self-Drilling Tip · Countersunk Flush

410 or 304 stainless steel Phillips countersunk self-drilling Tek screw. Drill tip pierces light steel studs and sheet metal directly – drilling, tapping, and fastening in one step. Countersunk head sits flush with workpiece surface for a neat finish. For drywall framing, sheet metal assembly, window/door curtain walls, automotive manufacturing. Sizes M3.5-M6.3, length customizable.

product details

JGD Service

Manufacturing Process

• Multi Station Cold Heading Technology

• Intelligent Heat Treatment System

• Micron-Level Thread Rolling Process

• Fully Automatic Optical Sorting

• Environmentally Friendly Surface Treatment Line

• Metallographic And Mechanical Joint Laboratory

Quality Control System

• Raw Material Source Locking

• Furnace Number Batch Full Traceability

• Third Party Material Certification

• Process Parameters Open And Transparent

• Salt Spray Test Real Time Monitoring

• International Standard Compliance Declaration

Flexible Customization Capability

• Customizable head/slot Shapes

• Extreme Application Of Special Materials

• Breakthroughs In Extra Large/Long Specifications

• Integrated Assembly Of Components

• Customizable Surface Treatment Colors

• Personalized Packaging And Labeling

Technical Service

• On-Site Failure Analysis

• Selection Calculation And BOM Optimization

• Installation Tool Selection Guidance

• Inventory Management (VMI) Trusteeship

• Free Sample Making And Testing

• International Standard Translation And Interpretation

Dual Stainless Steel Options – High Hardness or Superior Corrosion Resistance

Available in 410 and 304 stainless steel. 410 grade, heat-treated for high hardness, delivers high driving torque to penetrate thick steel sheets and light-gauge studs without tip wear or breakage; 304 grade (A2-70) offers excellent corrosion resistance for damp, salt-spray, and outdoor environments – rust-free for decades. One screw, two materials – choose according to working conditions, meeting both hardness and anti-corrosion needs.

Self-Drilling Tip – No Pre-Drilling, Efficient One-Step Installation

The built-in self-drilling tip penetrates light-gauge steel, thin metal sheets, aluminum profiles, and sheet metal directly – no pre-drilling or punching needed. An electric driver completes drilling, tapping, and fastening in one step – several times faster than conventional self-tapping screws. Ideal for high-volume assembly in drywall framing, metal windows/curtain walls, and automotive manufacturing – significantly boosting productivity.

Countersunk Flat Head – Flush Fit, Aesthetic & Non-Interfering

The countersunk flat head fully embeds into the workpiece surface, sitting flush with metal panels, profiles, or curtain walls – no protrusion, sleek appearance, and no interference with subsequent painting, film application, or decorative finishing. Burr-free head prevents scratching of operators and materials. Tight threads provide anti-slip locking against vibration, maintaining clamping force long-term – perfect for furniture sheet metal, signboards, and other high-aesthetic applications.

Factory Environment

High-Quality Stainless Steel Self-Tapping Screw Display

Precision Fastening, Engineered for the Future – Sichuan Jingguda Fasteners Co., Ltd., Your Trusted High-Quality Fastener Expert

Sichuan Jingguda Fasteners Co., Ltd. is a professional fastener manufacturer integrating R&D, production, and sales. We specialize in high-precision, high-strength bolts, nuts, washers, and non-standard customized fasteners, covering international standards such as GB, DIN, ISO, ANSI, and ASME. Equipped with multi-station cold heading machines, high-speed thread rolling machines, fully automated heat treatment lines, and surface treatment equipment, we also operate an in-house laboratory featuring spectrometers, hardness testers, tensile testing machines, and salt spray testers to ensure strict quality control from raw materials to finished products. Our products are widely used in industrial machinery, renewable energy, automotive manufacturing, rail transportation, and more, known for their precision, corrosion resistance, and durability. Committed to “Fast Delivery, Professional Support,” we provide one-on-one customized solutions and efficient logistics, striving to be your ideal partner for reliable connections.

Industrial Capabilities

• Factory Area: 11,405 square meters

• Certifications: ISO, IATF, CE, RoHS, JIS, ASTM

• Manufacturing : 70+ internationally advanced production lines

• Testing: 30+ sets of precision quality testing equipment

• Annual Output: Up to 50,000,000 tons

From Raw Materials to Finished Products

Closed-loop manufacturing from raw material to final product is made possible by our factory's fully automated production lines for cold heading, precision thread rolling, controlled-atmosphere heat treatment, and eco-friendly surface finishing. Every fastener satisfies strict requirements for strength, precision, and surface quality because of inline optical sorting and a digital MES. You guarantee long-lasting, efficient, and ecologically friendly fastening.

Innovation Lab:

Expertise and collaboration drive us forward, constantly pursuing innovative solutions. Have a project? Let's get started.

"Customized Implementation" to "Pain Point Diagnosis" in the Entire Joint R&D Process

We offer more than just common parts. Our multicultural engineering staff actively participates in your project from the start. In order to ensure that creative concepts are swiftly turned into workable solutions that lower overall lifetime costs, we carefully take into account the application context and customize solutions in the lab, flawlessly merging technology and application.

Integrated Verification System: Ensuring Innovation with "Test Data"

The drawing board is only the beginning of the creative process. We offer one-stop verification for everything from corrosion testing to prototype development through our in-house technical center. We employ empirical data to verify the performance stability of customized solutions through comprehensive simulated working condition tests. In addition to achieving genuinely dependable cost reduction and efficiency improvement, this greatly lowers project risks.

Fast Service Response

By using self-developed molds, flexible manufacturing lines, digital quality control, and agile supply chains to intelligently schedule production after confirmation, you may cut bulk order delivery times by thirty percent and finish sampling and delivery in seven days. Accurately determining the client's needs and offering customized solutions within a day is the initial stage in this process. With our "Demand-Solution-Sampling-Production" closed-loop solution, you can take advantage of market opportunities for both standard bolts and custom-shaped parts.