| GEOMET (NOF) | 321, 360, 500 (500A/500B), 720, 430 | Silver-gray; GEOBLACK variants = black. | 480-1500+ h depending on grade/topcoat (321 ≈720 h, 500 ≈720-1000 h, 720 >1000 h). | ~5-15 μm (adjustable by grade/process). | Yes – PLUS / GEOKOTE topcoats (lubricant / colour / friction tuning). (cdn.simplifiedbuilding.com) | Widely OEM-approved (VW, Toyota, Ford etc.); chromate-free variants available. (Nof Metal Coatings) |
| GEO-BLACK (NOF) | GEOBLACK 500M, ML, 180 | Black (matte → semi-gloss). | ~720-2000 h depending on system & topcoat (manufacturer data quotes wide range). | 8-15 μm typical. | Yes – black organic topcoats (PLUS black, GEOKOTE). | Designed for appearance + corrosion; controlled μ per ISO 16047. |
| DACROMET (legacy; NOF products also promoted) | DACROMET 320, 500 (legacy and modern variants) | Silver / dull grey (older chromated types existed). | ~240-1000 h (legacy sheets: typical ≥ 500-600 h; depends on grade). | ~7-13 μm typical. | Yes – friction/topcoat options for torque control. | Historically used widely in automotive; modern equivalents offered Cr-free to meet regulations. |
| MAGNI (Magni Coatings / Magni 565 family) | MAGNI 565, 575, 590 etc. | Silver; some black topcoat versions | ~480-1000 h (Magni 565 datasheets show 480-1000 h; some docs claim 1000 h). | ~5-13 μm (many fastener specs show 5-13 μm). (Magni Coatings) | Yes – duplex (inorganic base + organic topcoat) common. | Magni 565 is widely OEM-specified (many OEM approvals listed in data sheets). (SWD, Inc.) |
| DÖRKEN / DELTA-PROTECT (Delta-Protekt) | Delta-Protect KL series (KL100 etc.) | Silver / grey; variants with topcoats | ~480-1500 h (product-dependent). | ~5-15 μm | Yes – Delta Seal, Delta Tone topcoats | Leading EU zinc-flake family; OEM approvals common. |
| ZINTEK (Atotech / Tyrogalv family) | Zintek / Tyrogalv / Schmid zinc-flake lines | Silver gray | ~480-1000 h typical (varies by product) | ~5-12 μm | Yes – topcoat / lubricant options | Atotech / Schmid products are used in automotive & industrial markets. |
| TYROGALV / Schmid Zinc-Flake | Tyrogalv family | Silver / grey | Typical OEM ranges (480-1000 h) | ~5-12 μm | Yes | German suppliers-automotive approvals common. |
| MAGNI / DELTA hybrids (other regional brands) | Magni family, regional variants | Silver / black options | 480-1000 h typical | 5-15 μm | Yes | Often marketed as OEM-equivalent to GEOMET. |
| ZINGAFLAKE / Zinga systems | ZingaFlake, Zinga systems | Silver / grey (zinc-rich) | varies; marketed as high corrosion protection (check datasheet) | varies | Yes (topcoats) | Zinga family focused on large-area corrosion protection (not only fasteners). |
| ZFA (Chinese suppliers / generic zinc-flake) | ZFA-xxx series | Silver / grey | ~480-1000 h (vendor dependent) | ~6-15 μm | Yes (vendor options) | Widely used in industrial fasteners; verify OEM acceptance per buyer. |
| ZINCLAD / ZinKlad (MacDermid / Enthone lines) | ZinKlad variants | Silver / grey | varies (covering fastener market) | ~5-12 μm | Yes | MacDermid products include zinc-flake families with OEM approvals. |
| ZIRCOTEC ZF (high-performance) | ZF / Zircotec variants | Grey / specialized finishes | ≥720-1000 h (per product) | ~8-15 μm | Yes (PTFE / ceramic options) | Specialty, high-temp or friction-controlled types (less common for general fasteners). |
| JS-series (Japan: JS500 / JS600) | JS500, JS600 | Silver / grey | ~600-1000 h typical (OEM specs in Asia) | ~6-12 μm | Yes | Common in Japanese supply chains; used by Toyota, Honda suppliers. |
| RUSPERT (Ruspert) | Ruspert / Ruspert-S | Silver / black variants | ~480-1000 h (product dependent) | ~5-15 μm | Yes | Marketed as Cr-free alternatives in some regions. |
| Zinc-flake + PTFE / GEOKOTE / GEOKOTE-style | GEOKOTE, PTFE black topcoats | Black / graphite-like | ~1000-1500+ h (with right basecoat) | 10-18 μm (multi-layer) | Topcoat is the key feature | For low friction, chemical resistance & aesthetic black finish. |
