410 Self-Drilling Screws are bright hardened. This allows them to drill through steel and gives them a shiny stainless steel appearance.
Self-drilling screws are slightly magnetic which allows them to attach to magnetic hex drivers. This is great for one hand installation. This saves time.
Self drillers are used in mildly corrosive environments, otherwise 1000-hour coating can be applied for more corrosive applications.
We offer a variety of self-drilling screw head types along with EPDM bonded sealing washers in stainless steel which can be assembled if needed.
We offer all of our stainless steel self-drilling screws in a variety of sizes, with different point types, head measurements, stainless steel types and platings, paintings and/or coatings. We even offer custom screw fabrication for those unique or extra challenging applications.
The geometry of a self-drilling screw determines how efficiently it penetrates steel and how securely it locks into place. A well-formed drill point reduces wandering and ensures a clean entry, while thread design affects how smoothly the screw advances through the material. Head structure influences torque transfer and the quality of the final seating. When these elements work together, installers experience predictable, repeatable fastening across large projects.
Choosing the right self-drilling screw depends on several practical considerations that affect performance and durability:
Some projects require fasteners with enhanced features or unique configurations. Extended length #485 drill points may be necessary for thicker structural members, while specific head styles can solve clearance or torque challenges. Coatings or sealing components may be needed for assemblies exposed to moisture or temperature fluctuations. In these situations, specialized fasteners ensure consistent performance where standard options may not be sufficient. 1000-hour salt-spray coating can be added as an option as well.
We use a “4” marking on the head typically indicates 410 stainless, which is hardened for drilling strength and metal-to-metal fastening. #4 allows for easy identification in the field. This also designates this is 410 stainless after it is coated.
Yes, as long as the drill-point length matches the material thickness and the screw is designed for steel penetration.
They are recommended for exterior metal assemblies where moisture protection, panel preservation, and long term sealing are required.
Head style selection depends on torque needs, clearance limitations, and the desired appearance of the finished installation.
Solar racking • metal roofing • Standing seam metal roofs • metal construction • metal siding • Industrial insulation • fences • car ports • awnings and more
Our screws Can be coated with 1000-hour coating for additional corrosion protection
Our washers consist of EPDM rubber that is permanently bonded onto a thin stainless steel washer. The inside rubber surrounds the threads of the screw to keep moisture out when installed. Our EPDM bonded sealing washers are installed under the heads of self drilling, self-tapping, and self piercing screws. The rubber faces down and makes contact with the mating metal. EPDM is bonded to 304 (18-8) stainless steel for superior corrosion resistance. We stock large diameter washers up to 1 1/8" OD".
