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sales@fullerkr.com
FULLERKREG supplies precision-manufactured Pozi (Pozidriv) pan head machine screws conforming to GB818-2016 and ISO 7045. Produced in Marine Stainless Steel A4 (SUS316 / 1.4401) with a passivated and whitened surface finish, these screws deliver superior corrosion resistance — including resistance to chlorides and seawater — making them the preferred choice for marine, coastal, chemical, and high-humidity environments.
| Product Name | Pozi Pan Head Machine Screws |
| Drive Type | Pozidriv (Pozi / Type Z) |
| Head Type | Pan Head (Cylindrical low-profile domed head) |
| Standards | GB818-2016 / ISO 7045 |
| Material | Marine Stainless Steel A4 (SUS316 / 1.4401) |
| Surface Treatment | Passivated & Whitened (Natural Stainless Finish) |
| Property Class | A4-70 |
| Size Range | M1.6 – M10 |
| Length Range | 2 mm – 80 mm |
| Thread | Metric Coarse Thread (ISO 68-1) |
| Tolerance | 6g (thread) per ISO 965-1 |
| Brand | FULLERKREG |
| [ Product Image 1 ] | [ Product Image 2 ] | [ Product Image 3 ] | [ Product Image 4 ] |
All dimensions in millimeters (mm). Verified against GB818-2016 and ISO 7045 standard tables.
| Thread d |
Pitch p (mm) |
Head Dia. dk max (mm) |
Head Height k max (mm) |
Drive No. (Pozi) |
Drive Depth m min (mm) |
Drive Width b ref (mm) |
Length Range l (mm) |
Unit Weight (g / pc, ref.) |
|---|---|---|---|---|---|---|---|---|
| M1.6 | 0.35 | 3.2 | 1.3 | Z1 | 0.6 | 1.9 | 2 – 16 | 0.04 – 0.20 |
| M2 | 0.40 | 4.0 | 1.6 | Z1 | 0.7 | 2.3 | 2 – 20 | 0.07 – 0.45 |
| M2.5 | 0.45 | 5.0 | 2.0 | Z1 | 0.8 | 2.8 | 3 – 25 | 0.14 – 0.85 |
| M3 | 0.50 | 6.0 | 2.4 | Z1 | 1.0 | 3.5 | 4 – 30 | 0.22 – 1.50 |
| M3.5 | 0.60 | 7.0 | 2.6 | Z2 | 1.2 | 3.9 | 5 – 35 | 0.40 – 2.50 |
| M4 | 0.70 | 8.0 | 3.1 | Z2 | 1.4 | 4.6 | 5 – 40 | 0.60 – 4.20 |
| M5 | 0.80 | 10.0 | 3.7 | Z2 | 1.6 | 5.7 | 6 – 50 | 1.10 – 8.50 |
| M6 | 1.00 | 12.0 | 4.6 | Z3 | 2.0 | 6.8 | 8 – 60 | 2.20 – 15.50 |
| M8 | 1.25 | 16.0 | 6.0 | Z3 | 2.5 | 9.2 | 10 – 80 | 5.50 – 38.00 |
| M10 | 1.50 | 20.0 | 7.5 | Z4 | 3.0 | 11.5 | 12 – 80 | 11.00 – 65.00 |
* Unit weight values are reference only, calculated for A4 stainless steel (density ≈ 7.98 g/cm³). Actual weight may vary slightly by length and manufacturing tolerance. Full per-length weight tables available on request.
| Thread | Standard Lengths Available (mm) |
|---|---|
| M1.6 | 2, 3, 4, 5, 6, 8, 10, 12, 16 |
| M2 | 2, 3, 4, 5, 6, 8, 10, 12, 16, 20 |
| M2.5 | 3, 4, 5, 6, 8, 10, 12, 16, 20, 25 |
| M3 | 4, 5, 6, 8, 10, 12, 16, 20, 25, 30 |
| M3.5 | 5, 6, 8, 10, 12, 16, 20, 25, 30, 35 |
| M4 | 5, 6, 8, 10, 12, 16, 20, 25, 30, 35, 40 |
| M5 | 6, 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50 |
| M6 | 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60 |
| M8 | 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 |
| M10 | 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 |
| Property | A2 (SUS304) | A4 (SUS316) — This Product |
|---|---|---|
| Molybdenum Content | None | 2–3% Mo added |
| Chloride Resistance | Moderate | Excellent — seawater & salt spray |
| Pitting Corrosion Resistance | Standard | Superior |
| Chemical Resistance | Good | Excellent — acids, solvents |
| Recommended Environment | Indoor / mild outdoor | Marine / coastal / chemical / food |
| Price Point | Standard | Premium (higher Mo content) |
| Application / Requirement | Recommendation |
|---|---|
| Marine / offshore / boat fittings | A4 (SUS316) — resists seawater and salt spray corrosion |
| Coastal construction & architecture | A4 — superior pitting resistance in chloride-rich air |
| Chemical processing equipment | A4 — molybdenum addition resists acids and solvents |
| Food & beverage / pharmaceutical | A4 — hygienic, non-reactive, easy to clean |
| Swimming pools & water treatment | A4 — chlorinated water resistance |
| High-torque / cam-out resistant drive | Pozidriv (Pozi) — superior to Phillips under high torque |
| Flush or low-profile assembly | Pan head — wide bearing surface, minimal protrusion |
| Structural / load-bearing assemblies | M5 – M10, A4-70 property class |
GB818-2016 is the Chinese national standard for cross recessed pan head screws, equivalent to and harmonized with ISO 7045:2011. Key standard provisions include:
| Property | Value / Specification | Standard Reference |
|---|---|---|
| Property Class | A4-70 | ISO 3506-1 |
| Tensile Strength (Rm) | ≥ 700 MPa | ISO 3506-1 |
| 0.2% Proof Stress (Rp0.2) | ≥ 450 MPa | ISO 3506-1 |
| Elongation (A) | ≥ 40% | ISO 3506-1 |
| Hardness (Vickers) | HV 220 max | ISO 3506-1 |
| Main Alloy Composition | Cr: 16–18%, Ni: 10–14%, Mo: 2–3%, C: ≤ 0.08% | ASTM A276 / EN 10088 |
| Magnetic Permeability | Essentially non-magnetic (austenitic) | — |
| Corrosion Resistance | Excellent — seawater, chlorides, acids, industrial chemicals | — |
| Operating Temperature | -196°C to +800°C (intermittent) | — |
| Density | ≈ 7.98 g/cm³ | — |
| Thread Size | Standard Pack Qty (pcs) | MOQ (pcs) | Bulk Packaging |
|---|---|---|---|
| M1.6 – M3 | 1,000 / 2,000 / 5,000 | 1,000 | Poly bag in carton |
| M3.5 – M6 | 500 / 1,000 | 500 | Poly bag in carton |
| M8 – M10 | 100 / 200 / 500 | 100 | Poly bag in carton |
* Custom packaging, labeling, and mixed-size kitting available for wholesale orders. Contact FULLERKREG for bulk pricing and lead times.
🏭 Direct Manufacturer — Produced in-house with full process control from wire drawing to finished fastener.
📐 Standard Compliance — Every batch manufactured and inspected to GB818-2016 / ISO 7045 dimensional and mechanical requirements.
🔬 Material Traceability — Mill certificates and material test reports (MTR) available for A4 stainless steel upon request.
📦 Wholesale Ready — Flexible MOQ, bulk pricing tiers, and OEM/private label options for distributors and industrial buyers.
🚢 Global Shipping — Export packaging and documentation (CO, packing list, inspection reports) for international orders.
✅ Quality Assurance — 100% dimensional inspection on critical sizes; salt spray and hardness testing available on request.
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