Self-Drilling Screws
Self-Drilling Screws are specialized fasteners designed to cut through metal, wood, and composite materials without requiring a pre-drilled hole. Their drill-point tip and cutting edges eliminate the need for separate drilling and tapping operations, making them ideal for construction, roofing, sheet metal assembly, HVAC installations, and industrial manufacturing.
At Rajal Industries, we manufacture high-performance self-drilling screws that conform to ASTM, ISO, and DIN standards, ensuring superior penetration, secure fastening, and high shear strength.
Sizes & Standards
| Size Range | Standards |
|---|---|
| Diameters: M3 to M12 (Metric) | ASTM F1667 – Standard for self-drilling fasteners |
| Gauge Sizes: 6 to 14 (Imperial) | ISO 15480 – Self-drilling screws with hexagon heads |
| Lengths: 10mm to 150mm | DIN 7504 – German standard for self-drilling screws |
| Manufacturer Standards – Custom sizes and materials for specialized applications |
Material & Strength Grades
| Material Type | Available Strength Grades | Industry Standards |
|---|---|---|
| Mild Steel & Carbon Steel | 4.6, 5.6, 8.8 | ISO 15480, ASTM F1667 |
| Stainless Steel (Corrosion Resistant) | A2-70 (SS 304), A4-80 (SS 316) | DIN 7504, ASTM F1667 |
| Hardened Steel (Heat Treated) | Class 8.8, 10.9 | ISO 15480, DIN 7504 |
- Case-Hardened for Drilling Efficiency –Self-drilling screws undergo edge hardening and quenching for improved cutting performance and durability.
- Load Ratings Based on Material & Application:
- Carbon Steel Class 8.8 Self-Drilling Screw: 800-900 MPa tensile strength
- Stainless Steel A4-80 Self-Drilling Screw : 700-800 MPa corrosion-resistant strength
Head & Drive Design Specifications
Integrated Drill Tip for One-Step Installation
- Eliminates the need for separate pilot drilling, reducing installation time and labor costs.
- Available with sharp or blunt drill tips, ensuring efficient penetration into metal, wood, and composite surfaces.
Multiple Head Styles for Various Applications
- Hex Head (ISO 15480, DIN 7504) – Offers high torque resistance, ideal for roofing, cladding, and steel structures.
- Pan Head (ASTM F1667) – Provides a low-profile, clean finish for electrical and appliance applications.
- Countersunk Head (DIN 7504) – Ensures a flush, smooth surface in precision installations.
High-Precision Threading for Secure Grip
- Threads are engineered for self-drilling action, providing secure, vibration-resistant fastening.
- Available in coarse and fine thread profiles for better engagement with various substrates.
Drive Type Compatibility
- Phillips Drive (Cross Recessed) – Allows fast, efficient torque application.
- Torx& Hex Drive – Provides higher torque resistance and prevents cam-out.
Thread Specifications & Precision Engineering
| Thread Type | Description | Application |
|---|---|---|
| Coarse Thread (UNC/ISO Metric) | Ensures quick penetration and strong grip | Sheet metal, drywall, roofing |
| Fine Thread (UNF/Metric Fine) | Provides stronger holding power & load distribution | Automotive, industrial machinery |
| Fully Threaded Self-Drilling Screws | Allows maximum adjustability & engagement | HVAC, telecom, construction panels |
| Partially Threaded Self-Drilling Screws | Offers better shear strength & controlled load transfer | Structural fastening, composite materials |
Thread Fitment & Compliance
- Metric threads conform to ISO 6g tolerances, ensuring smooth engagement with different materials.
- Imperial self-drilling screws meet ASTM F1667 and DIN 7504 for precise installation in industrial settings.
Common Applications of Self-Drilling Screws
- Roofing & Cladding Installations – Used in metal roofs, wall panels, and steel frames.
- HVAC & Ductwork Fastening – Provides secure fastening in small devices and control panels.
- Sheet Metal Fabrication & Automotive Assembly – Used in car body panels, enclosures, and metal structures.
- Construction & Framing – Ensures fast, reliable fastening in metal-to-metal and wood-to-metal connections.
- Electronics & Electrical Enclosures – Used in junction boxes, control panels, and telecom cabinets.
Why Choose Rajal Industries for Self-Drilling Screws?
Manufactured to International Standards
Ensuring precision engineering, strength, and compliance.
Customizable Designs
Available in various head types, drive styles, and coatings.
Bulk & Custom Orders
Flexible manufacturing for high-volume and specialized applications
Durability & Strength
Engineered with high-performance materials for maximum reliability.
Stringent Quality Control
Self-Drilling Screws undergo drill-speed testing, thread fitment verification, and dimensional accuracy checks.
Keep up to date-get email-updates
Stay tuned for the latest Company news
Our Offices
C-204, Vaibhav Platina, Nr. Kaveri Trishra, S P Ring road, Shilaj, Ahmedabad, Gujarat-380054
Call us
+91-846 036 2030
Email Us
rajalfast@gmail.com sales@rajalindustries.com