These are SS410 stainless steel screws with a truss head, which is wide and moderately rounded to spread pressure and prevent material tearing. They are designed to drill and secure in one step and, therefore, are time-efficient and effort-saving.

Key Features:

  • Drives and secures in one stroke – no pre-drilling necessary
  • The wide head resists pull-through on thin stock
  • It is offered with anti-rust coatings for extended life

Material:

  • SS410 Stainless Steel – High corrosion resistance and durability

Head Type:

  • Truss Head – Low curved top with generous surface area to securely hold material

Drive Type:

  • Usually Phillips shaped (PH) or PoziDrive shaped. (PZ)
  • Some are Hex or Torx

Drill Point:

  • Self-Drilling – Size #2, #3, or #5 depending upon the thickness of metal (Can drill up to 2.5 mm – 6 mm thick steel)

Thread Type:

  • Fine or Coarse Thread
  • Some have serrations to reduce vibration and loosening

Sizes:

  • Diameter: Between #6 and #14 (about 3.5 mm to 6.3 mm)
  • Length: From 6 mm to 100 mm

Coatings & Options

  • May be in zinc-plated, galvanized, or ceramic-coated form for added rust resistance
  • Also in carbon steel (1022) or stainless steel 304/316

Meets Standards:

  • DIN 7504 (for self-drilling screws)
  • ASTM B151 (for materials)

Where to Use:

  • Sheet Metal Work
  • HVAC Installations
  • Roofing Projects
  • Light Steel Framing

These screws are an excellent choice for anyone working with sheet metal, roofing, or HVAC, especially where a speed and hardness requirement is necessary.