Material: Carbon steel, Stainless steel SUS304, SUS316, A2-70, A4-80, titanium alloy, aluminum alloy.
Standard: JASO F 116 - 2005&ISO 7380&DIN EN ISO 7380 (-2)
1. Metric 18-8 Stainless Steel Flanged Button Head Torx Screws: Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer. All are passivated for added protection against oxidation and corrosion. Head height includes the flange. Length is measured from under the flange.
2. Metric SUS316 Stainless Steel Flanged Button Head Screws: SUS316 stainless steel screws resist corrosion from chemicals and saltwater better than 18-8 stainless steel screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer. All are passivated for added protection against oxidation and corrosion. Screws may be mildly magnetic. Head height includes the flange. Length is measured from under the flange.
3. Alloy Steel Flanged Button Head Screws: Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer. Head height includes the flange. Length is measured from under the flange.
Black-oxide alloy steel screws are mildly corrosion-resistant in dry environments.
Zinc-plated alloy steel screws resist corrosion in wet environments.
4. Metric Alloy Steel Flanged Button Head Screws: These alloy steel screws are nearly twice as strong as stainless steel button head screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer. Head height includes the flange. Length is measured from under the flange.
Black-oxide alloy steel screws are mildly corrosion-resistant in dry environments.
Zinc-plated alloy steel screws resist corrosion in wet environments.
5. Aluminum Ultra-Wide Flanged Button Head Screws: Aluminum screws are lightweight and resist corrosion in wet environments. These screws have a flange that is wider and thicker than our other flanged screws, so they distribute pressure the best. Head height includes the flange. Length is measured from under the flange.
