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Dome Nuts (DIN 1587) - Stainless Steel (A2)

Dome Nuts (DIN 1587) — Stainless Steel A2 (SS304)

FULLERKREG DIN 1587 hexagon domed cap nuts (acorn nuts) are manufactured to metric DIN 1587 standard in Stainless Steel A2 (SUS 304). The domed cap design provides full thread protection while delivering a clean, finished appearance. Ideal for exposed fastening applications requiring corrosion resistance and aesthetic consistency. All parts are passivated (acid-washed & passivated finish) for enhanced surface quality and long-term corrosion protection.

  • Standard: DIN 1587
  • Material: Stainless Steel A2 / 1.4301 (SUS 304)
  • Surface Treatment: Acid-washed & Passivated (洗白钝化)
  • Size Range: M3 × 0.5 — M30 × 3.5
  • Thread: Metric coarse thread (ISO 68-1)
  • Drive: Hexagon (spanner-driven)
  • RoHS Compliant: Yes

Dimensional Data — DIN 1587 Dome Nuts (Stainless Steel A2)

All dimensions in mm. Single-piece weight (单重) is theoretical reference value.

Nominal Size
d		 Pitch
(mm)		 Width Across Flats
s max / s min (mm)		 Width Across Corners
e min (mm)		 Dome Dia
dk max (mm)		 Thickness
m max / m min (mm)		 Height
h max / h min (mm)		 单重 Unit Weight
(g/pc, ref.)
M3 0.5 5.50 / 5.14 6.01 5.50 3.20 / 2.70 6.50 / 5.86 ≈ 0.8
M4 0.7 7.00 / 6.64 7.50 6.50 3.20 / 2.90 8.00 / 7.42 ≈ 1.5
M5 0.8 8.00 / 7.64 8.63 7.50 4.00 / 3.70 10.00 / 9.42 ≈ 2.5
M6 1.0 10.00 / 9.64 10.89 9.50 5.00 / 4.70 12.00 / 11.30 ≈ 4.5
M8 1.25 13.00 / 12.57 14.20 12.50 6.50 / 6.14 16.00 / 14.30 ≈ 9.5
M10 1.5 17.00 / 16.57 17.59 16.00 8.00 / 7.64 18.00 / 17.30 ≈ 17
M12 1.75 19.00 / 18.48 19.85 18.00 10.00 / 9.64 22.00 / 21.16 ≈ 27
M14 2.0 22.00 / 21.16 22.78 21.00 11.00 / 10.30 25.00 / 24.16 ≈ 42
M16 2.0 24.00 / 23.16 26.17 23.00 13.00 / 12.30 28.00 / 27.16 ≈ 58
M18 2.5 27.00 / 26.16 29.56 26.00 15.00 / 14.30 32.00 / 31.00 ≈ 82
M20 2.5 30.00 / 29.16 32.95 28.00 16.00 / 14.90 34.00 / 33.00 ≈ 110
M22 2.5 34.00 / 33.00 37.29 33.00 18.00 / 16.90 39.00 / 38.00 ≈ 160
M24 3.0 36.00 / 35.00 39.55 34.00 19.00 / 17.70 42.00 / 41.00 ≈ 195
M27 3.0 41.00 / 40.00 47.30 40.00 20.00 / 18.70 47.00 / 46.00 ≈ 285
M30 3.5 46.00 / 45.00 52.00 42.00 24.00 / 22.60 52.00 / 51.00 ≈ 390

* Unit weights are theoretical reference values based on SS304 density (7.93 g/cm³). Actual weights may vary slightly. Contact FULLERKREG for certified weight data on bulk orders.

Selection Guide — DIN 1587 Dome Nuts

Application Requirement Recommended Specification
General outdoor / marine exposure M6–M16, A2 SS304, passivated
Decorative / visible fastening M3–M12, A2 SS304, passivated — clean dome finish
Thread end protection (safety) Any size — dome cap fully encloses thread end
Electrical enclosures / panels M4–M10, A2 SS304 — non-magnetic (austenitic)
Food processing / hygienic environments M6–M20, A2 SS304 passivated — smooth dome, easy to clean
Structural / high-load applications Consider A4-80 or carbon steel grade — consult FULLERKREG

Standard Reference

DIN 1587 specifies hexagon domed cap nuts (acorn nuts) with metric coarse thread. The standard defines the hexagon body dimensions (width across flats, height) and the domed cap geometry (dome diameter and total height). DIN 1587 is harmonized with ISO 1587. Thread tolerance class: 6H per ISO 965-1. For dimensional verification, refer to the official DIN 1587 publication.

  • Equivalent Standards: ISO 1587, BS 1768
  • Thread Standard: ISO 68-1 Metric Coarse
  • Tolerance Class: 6H
  • Material Standard: ISO 3506-2 Annex F (Austenitic A2)

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DIN 1587 Dome Nuts — Stainless Steel A2 (SS304) | FULLERKREG

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Why FULLERKREG?

  • 🏭 Direct Manufacturer — Factory-direct pricing, no middlemen, consistent quality control
  • 📐 DIN / ISO Precision — Strict dimensional compliance to DIN 1587 & ISO 1587 standards
  • 🔩 Full Size Range — M3 to M30 in stock, ready for bulk wholesale orders
  • 🛡️ Corrosion Resistant — A2 SS304 with passivated finish for long-term durability
  • 📦 Wholesale Ready — Bulk packaging, custom labeling, and OEM support available
  • 🌍 Global Export — Experienced in international shipping, documentation, and compliance
  • ✅ RoHS Compliant — All products meet RoHS environmental requirements
  • 📋 Material Certification — Mill test reports and material certificates available on request

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