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admin@sxjbradnail.comI spend a lot of time on jobsites, and the request I hear most is simple: “Grab me a bucket of black drywall screws.” It sounds generic, but it isn’t. The best ones marry fast driving with clean seating and just enough corrosion resistance for interior work. This line comes out of Lixinzhuang Industrial, Dingzhou, Hebei, China—an area that, frankly, has become a nerve center for cold-formed fastener production. And yes, they’ve kept the essentials right: bugle head, sharp point, reliable coating.
Trends? A few worth noting. Contractors are shifting to collated belts for productivity, but loose black drywall screws still dominate repairs and punch-lists. Coatings are getting smarter: classic black phosphate remains the go-to for interior gypsum, while thin vinyl or ceramic topcoats are gaining ground in damp spaces. There’s also quiet progress in hydrogen embrittlement control (post-bake routines), which, to be honest, many buyers don’t ask about—but should.
| Parameter | Typical Spec | Notes |
|---|---|---|
| Material | C1022 carbon steel (case hardened) | Heat-treated for drive/holding power |
| Head / Drive | Bugle / Phillips | Prevents paper tear, seats flush |
| Thread / Point | Coarse thread / Sharp point | Optimized for wood battens and studs |
| Size range | L 25–75 mm; Ø ≈3.5–4.2 mm | Common: 25/35/41/50/57/65 mm |
| Coating | Black phosphate (≈8–12 μm) | Optional thin vinyl for added protection |
| Salt spray (ASTM B117) | ≈24–72 h to first red rust | Interior use; real-world performance may vary |
| Standards | ASTM C1002; EN 14566 | Batch testing with torque/drive checks |
Many contractors say black drywall screws give the most predictable drive: the sharp point starts quickly, the coarse thread locks in, and the paper face stays intact if you don’t over-torque—simple as that.
| Vendor | MOQ | Certs | Lead Time | Coatings | Typical $/1k |
|---|---|---|---|---|---|
| SXJ (Hebei) | ≈100–300k pcs | ISO 9001; EN 14566 | 2–4 weeks | Black phosphate, vinyl | Mid-range |
| Big-Box Private Label | Retail packs | ASTM claim | Immediate | Phosphate | Higher |
| EU Specialist | ≈50–100k pcs | CE; EN 14566 | 3–6 weeks | Phosphate, ceramic | Premium |
Case #1 (multi-family retrofit): switching to coarse-thread black drywall screws cut pop-outs by ~18% and shaved 11% off install time, mostly from fewer strip-outs. Case #2 (clinic fit-out): a thin vinyl topcoat version extended aesthetic life in humid utility rooms—no rust bleed through paint after 9 months, which surprised the site lead.
Feedback is consistent: “They start fast, seat clean, and don’t fuzz the paper.” That’s what you want. Just match the screw to the environment—phosphate for dry interiors; upgraded coatings where moisture lurks.
Compliance/certifications: ISO 9001 QC, product built to ASTM C1002 and EN 14566; salt-spray per ASTM B117; follow GA-216 for board application.