Cap Nuts — DIN 917 Low Profile Thin Pattern

FULLERKREG DIN 917 cap nuts (acorn nuts / dome nuts) are manufactured to the DIN 917 low-profile thin-pattern standard. The closed hexagonal dome covers and protects bolt ends from corrosion, contamination, and mechanical damage while providing a clean finished appearance. Available in multiple materials and surface treatments to suit a wide range of industrial, architectural, and commercial applications.

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DIN 917 Sub-Series

A2 Stainless Steel DIN 917 Cap Nut
Material: A2 (SUS304) · Surface: Passivated & Pickled · Size: M3–M20 · Grade: A2-70 · Corrosion resistant, ideal for food processing, architectural & marine environments

DIN 917 Class 4 Steel Zinc Plated Cap Nut — Low Profile Thin Pattern
Material: Low Carbon Steel · Surface: Zinc Plated Cr3 (Blue-White) · Size: M3–M20 · Grade: Class 4 · RoHS compliant, ideal for general industrial, automotive & construction applications

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Material & Grade Selection Guide

Sub-Series	Material	Surface	Grade	Size Range	Typical Application
DIN 917 A2	A2 Stainless Steel (SUS304)	Passivated & Pickled	A2-70	M3 – M20	Food processing, marine, architectural, hygienic environments
DIN 917 Class 4	Low Carbon Steel	Zinc Plated Cr3	Class 4	M3 – M20	General industrial, automotive, construction, electrical enclosures

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Standard Reference

• DIN 917 — Low profile thin pattern cap nut (this series)
• DIN 1587 — High profile cap nut (taller dome, deeper cap cavity)
• Thread tolerance: 6H per ISO 965-1
• Dimensional tolerance: ISO 4759-1 Product Grade A (M3–M16), Grade B (M20)
• Mechanical properties: ISO 898-2 (steel) / ISO 3506-2 (stainless steel)

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Product Gallery

DIN 917 Cap Nuts — actual product photos:

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Why FULLERKREG

• 🏭 Direct Manufacturer — Full process control from raw material to finished part
• 📐 Strict DIN Compliance — Every batch dimensionally verified against DIN 917 drawings
• 📦 Wholesale & Bulk Ready — Bulk bags, box-of-boxes, OEM labeling and kitting available
• 🌍 Global Export Experience — Europe, North America, Southeast Asia, Middle East — full export documentation
• ⚡ Fast Lead Times — In-stock sizes for immediate dispatch; custom quantities on short lead time
• 💬 Engineering Support — Technical team available for specification, substitution, and application questions