The Zinc Plated Carbon Steel Phillips Self Drilling Screw (commonly known as a cross recessed Tek screw, pan head self drilling screw, flat head self drilling screw, truss head wafer screw, or DIN 7504N / DIN 7504P / DIN 7504T fastener) is a high-speed structural fastener engineered to drill, tap, and fasten sheet metal joints in a single rapid operation. Featuring a precision-formed drill bit tip (Tek point) at its apex, this screw cuts through steel sheets and aluminum profiles without requiring pre-drilled pilot holes or center punching. Manufactured from C1022A cold-heading wire rod and case-hardened to achieve superior drilling performance, our Phillips self-drilling screws adhere strictly to global ISO standards.
Technical Specifications of Phillips Self Drilling Screws
We produce a full range of head styles—Pan Head (DIN 7504N), Flat Countersunk Head (DIN 7504P), and Modified Truss / Wafer Head (DIN 7504T)—to accommodate various aesthetic, flush-mounting, and clamping requirements. Case hardening establishes a hard drill tip (≥ 560 HV) that pierces steel plates up to 5mm thick effortlessly.
| Head Style & Standard | Drive Recess | Surface Hardness | Max Drilling Capacity | Primary Application Advantage |
|---|---|---|---|---|
| Pan Head (DIN 7504N / ISO 15481) | Phillips No. 2 / No. 3 | ≥ 560 HV0.3 | Up to 3.5mm Steel Plate | High Bearing Area for General Metal & Electrical Cabinets |
| Countersunk Flat Head (DIN 7504P / ISO 15482) | Phillips No. 2 / No. 3 | ≥ 560 HV0.3 | Up to 3.5mm Steel Plate | Flush Surface Finish in Counterbored Metal & Hinges |
| Truss / Wafer Head (DIN 7504T) | Phillips No. 2 / No. 3 | ≥ 560 HV0.3 | Up to 4.0mm Steel Plate | Extra-Wide Low Profile Head to Prevent Thin Sheet Tear-Out |
Precision Manufacturing, Drill Point Pinching, and Case Hardening
At our manufacturing facility in Handan, China, Phillips self-drilling screws undergo automated multi-station cold forming, drill point pinching, thread rolling, case-hardening heat treatment, and electroplating:
- Multi-Station High-Speed Cold Heading: High-precision cold formers press C1022A carbon steel wire into exact head shapes (Pan, Flat Countersunk, Truss) and deep Phillips drive recesses without recess slippage or burrs.
- High-Accuracy Drill Point Pinching: Specialized pinching machinery cuts sharp cutting flutes into the tip to form an efficient drill point for instant steel penetration.
- Thread Rolling & Pitch Control: Thread rolling machines roll sharp tapping threads that seamlessly transition from the drill point to ensure smooth thread engagement.
- Continuous Mesh-Belt Heat Treatment: Controlled atmosphere carburizing furnaces infuse carbon into the surface layer, establishing a hard drill point (≥560 HV) while maintaining core ductility (270–390 HV).
- Electro-Zinc Plating & De-Embrittlement Baking: Trivalent chromium (Cr3+) electro-galvanizing applies a bright 5–10 µm protective zinc coating, followed by baking to prevent hydrogen embrittlement.
Key Industrial Applications of Phillips Self Drilling Screws
Phillips self-drilling Tek screws provide fast, reliable mechanical joining across diverse light-gauge metal construction sectors:
- Drywall Studs & Light Steel Framing: Fastening galvanized steel studs, track channels, and gypsum board metal framing.
- HVAC Air Ducts & Electrical Cabinets: Assembling thin sheet metal air ducts, junction boxes, and switchgear enclosure panels.
- Aluminum Windows, Doors & Furniture: Mounting hardware, hinges, and aluminum extrusion frames requiring flush or low-profile head seating.
Quality Control and Export Packaging for Phillips Self Drilling Screws
Handan YiHao Fastener enforces strict Quality Assurance (QA) standards for all overseas export orders. Testing procedures include 100% drive recess depth gauge checks, surface/core Vickers hardness testing (HV0.3), drilling penetration speed tests (drilling through standard steel plates within 3 seconds), and salt spray validation.
All export items are bulk packed in heavy-duty 25kg inner cartons or 1000pcs small color boxes, neatly stacked on ISPM 15 compliant fumigated wooden pallets, and wrapped in protective stretch film for safe ocean freight.
Request Factory Direct Pricing for Phillips Self Drilling Screws
Looking for a trusted manufacturer in Handan, China for carbon steel C1022A zinc-plated Phillips self drilling screws (DIN 7504N Pan Head, DIN 7504P Flat Countersunk, DIN 7504T Truss Wafer Head)? Contact Handan YiHao Fastener today for technical datasheets, drilling penetration test reports, free samples, and direct bulk export quotes.
