Hexagon washer head drilling screws; DIN 7504-K remains a common commercial reference.
FEATURED PRODUCT · SELF-DRILLING SCREWS
Self-Drilling Screws for Roofing & Metal Fastening
For steel roofing, cladding, light-gauge framing, HVAC and metal-to-metal assembly. Select head style, drill point, diameter, length, washer, material, coating and packing.
STANDARD FAMILIESISO 15480 ISO 15481 ISO 15482 / 15483
Common International Product Forms
Cross-recessed pan head drilling screws for sheet-metal assembly.
Countersunk and raised countersunk drilling screw forms for flush or finished surfaces.
SIZE REFERENCE
Common ST Nominal Diameters
| Designation | ST2.9 | ST3.5 | ST3.9 | ST4.2 | ST4.8 | ST5.5 | ST6.3 |
|---|---|---|---|---|---|---|---|
| Nominal Ø mm | 2.9 | 3.5 | 3.9 | 4.2 | 4.8 | 5.5 | 6.3 |
Drill capacity, point length, washer type and corrosion class must be confirmed from the application and product specification.
RFQ CHECKLIST