Material: C1022A carbon steel
Certificate: CE
Head Type: round wafer head
Surface Treatment: black phosphated, zinc plated, nickle plated,ss, color painted
Point: self-tapping, sharp point
Thread: standard thread
Drive: cross drive/phillip drive
Bit type: PH2
Diameter: #6 (3.5mm) /#7(3.9mm) /#8(4.2mm)/#10 (4.8mm)/#12(6.3mm)
Length: 13mm-100mm
Provide:OEM
Self-tapping wafer head screws are high-efficiency fasteners with built-in washers, widely used in steel structures, corrugated steel roofs, curtain walls, sunrooms, and simple buildings.
Self-tapping wafer head screws (also known as "round head self-drilling screws" or "self-drilling dovetail screws") are common fasteners in the construction industry. The washer head distributes pressure and prevents loosening; self-tapping dovetail screws can be directly drilled and tapped into the material without pre-drilling.
Common head types include round head, large flat head, and hexagonal head, facilitating tool tightening and preventing slippage. Most heads have Phillips head grooves (such as PH2) to accommodate drill bits and reduce slippage.
The most commonly used type is C1022A galvanized carbon steel: high strength, low cost, suitable for general environments.
Stainless steel 304/316: strong corrosion resistance, suitable for coastal, humid, or corrosive environments.
Stainless steel 410: After heat treatment, it has high hardness, can drill through iron plates, and its rust resistance is between that of carbon steel and stainless steel.
Common specifications: Diameters range from 3.7mm to 4.8mm, and lengths range from 13mm to 75mm.
We offer free samples and provide customized services!
