Who it is for
- Importers who already buy Chinese construction screws and need a Haiyan second source.
- Traders building mixed containers across drywall, chipboard and self-drilling.
Drywall Screw,Hi-Lo Thread,Black is part of the Ehons screw line made in Haiyan for construction machinery, general machinery and municipal work. Copy published on the previous site lists the standards, materials, grades, threads and finishes below. Use those fields as the quote baseline; do not assume undocumented tolerances.


Drywall Screw,Hi-Lo Thread,Black is part of the Ehons screw line made in Haiyan for construction machinery, general machinery and municipal work. Copy published on the previous site lists the standards, materials, grades, threads and finishes below. Use those fields as the quote baseline; do not assume undocumented tolerances.
| Standard | DIN,ANSI,etc |
|---|---|
| Size | 3.5~4.8mm,6#~10# , Length: 10-180mm (3/8”- 7”)D3.5N,ANSI3.5~4.8mm,6#0mm(3/8″-7″) |
| Material | C1022+ heat treatment |
| Head Type | Bugle head,pan framing head,CSK head with ribs(type 17 ) |
| Drive Type | Phillips, square, torx,etc |
| Screw Type | BSD,CSD |
| Finish | zinc plated(clear/bule/yellow)+wax,black/grey phosphate,nickel, ruspet |
Only fields present on ehons.cn are shown. Missing values are omitted rather than guessed.
Carbon steel, alloy steel and/or stainless steel as listed in the specification table for this item.
Company profile states ISO 9001. Individual product pages also name the dimensional standards in the table above. No other certificates were published on the old site.
Stay on this sheet if the head and drive match the drawing. Switch to a related product below when the point type (self-tapping vs self-drilling) or thread (fine vs coarse, hi-lo) changes.
Where the source states a minimum order, it is 500 kg.
Shanghai or Ningbo, as written on several product pages.
Ask sales. Sample policy is not published on the old site, so it is not claimed here.