Stainless Steel Sheet Metal Self Drilling Screw-Flat Head Phillips Fast Self Tapping Screw

描述

1. 1. Performance & Material Properties
      • Dual‐Grade Stainless Construction: Available in AISI 304 (austenitic, 18-8 stainless, tensile 500–600 MPa, superior corrosion resistance in marine or chemical environments) or AISI 410 (martensitic, tensile 700–800 MPa, Rockwell hardness 30–38 HRC for higher wear resistance).
      • Self-Drilling TEK-Style Point: Precision ground to Rc 45–50, the flute tip drills through 0.8–1.5 mm mild steel or aluminum without a pilot hole, evacuating chips cleanly and minimizing heat buildup to prevent galling.
      • Sharp Self-Tapping Thread: Rolled threads form mating threads in sheet metal (0.8–2.0 mm) as the screw advances, ensuring high clamp load and vibration resistance without additional thread-locking compounds.
      • Flat Phillips Countersunk Head: Ø 8–10 mm low-profile head with a 100° countersink sits flush for a neat finish, distributes load evenly on thin substrates, and resists pull-through in soft metals or composites.
   2. Detailed Application Range
      • Metal Roofing & Cladding: Securing thin‐gauge roofing, soffits, fascia, gutters, and decorative panels on residential, commercial, and industrial structures.
      • HVAC & Ductwork: Fastening sheet‐metal ducts, plenums, access doors, flanges, and grille frames where airtight and corrosion‐resistant joints are critical.
      • Electrical & Data Installations: Mounting junction boxes, control cabinets, cable trays, lighting fixtures, and equipment racks in both indoor and sheltered outdoor environments.
      • Automotive, Marine & Industrial Equipment: Ideal for attaching interior trim, brackets, signage, display frames, and machinery guards where rapid assembly and reliable torque retention are required.
   3. Effortless Installation & Operation
      • One-Step Drill & Tap: TEK-style self-drilling tip and self-tapping thread eliminate separate drilling and tapping operations—cutting installation time by up to 50 % and ensuring precise entry even on angled or overhead surfaces.
      • Phillips #2 Drive Compatibility: Deep cruciform recess resists cam-out and engages standard #2 Phillips bits or low-torque drivers up to 6 Nm, reducing bit wear and operator fatigue.
      • Controlled Seating & Anti-Overdrive Shoulder: Integrated head shoulder prevents over-insertion and substrate distortion; screws back out cleanly without enlarging the hole, facilitating quick rework or repositioning.
      • Countersink Flush Finish: Flat head seats flush or slightly proud for a smooth, low-profile appearance and consistent clamp load distribution.
   4. Superior Quality & Long-Term Reliability
      • ISO 9001 & ASTM Compliance: Manufactured in ISO 9001–certified facilities to ANSI B18.6.4 and DIN 7504 P tolerances (±0.1 mm on diameter, ±0.2 mm on length) for global interchangeability.
      • Rigorous Corrosion Testing: 304 screws pass ≥720 h neutral salt-spray (ASTM B117); 410 screws with black-oxide finish endure ≥240 h without pitting, ensuring reliable performance in harsh environments.
      • Drive-Torque & Pull-Out Verification: Batch-tested for consistent drive torque, head pull-off strength, and thread engagement to guarantee secure fastening under vibration and dynamic loads.
      • Full Traceability & Environmental Compliance: Lot-traceable from melt to finished part with material certificates; RoHS- and REACH-compliant, free of hexavalent chromium and other restricted substances.