Hexagon Nylon Locking Nuts — DIN 985

FULLERKREG DIN 985 Hexagon Nylon Insert Lock Nuts (also known as Low-Type Nyloc Nuts or Thin Prevailing Torque Nuts) feature a compact low-profile hexagon body with an integrated polyamide insert that locks onto the bolt thread under compression, delivering reliable vibration resistance without adhesives or secondary locking devices. The reduced height profile makes DIN 985 the preferred choice where axial space is limited. Available in five material grades — from economical zinc-plated carbon steel to marine-grade stainless steel — covering thread sizes M4 through M24. All grades conform to DIN 985 / ISO 10511.

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Product Series — Select by Material

Hexagon Nylon Locking Nuts (DIN 985) — Stainless Steel A2 (SUS304)
材质 SUS304 · 表面洗白钝化 · M4–M24 · 耐腐蚀通用级 · ISO 10511 / A2-70

Hexagon Nylon Locking Nuts (DIN 985) — Marine Stainless Steel A4 (SUS316)
材质 SUS316 · 表面洗白钝化 · M4–M24 · 含钼海洋级防腐 · ISO 10511 / A4-70

DIN 985 Nylon Insert Lock Nut — Zinc Plated Low Carbon Steel (Class 4)
材质 Q195低碳钢 · 镀锌 CR3 · M4–M24 · 经济型通用工业级 · RoHS合规

DIN 985 Nylon Insert Lock Nut — Zinc Plated Carbon Steel (Class 8)
材质 35K中碳钢热处理 · 镀锌 CR3 · M4–M24 · 高强度重载结构级 · RoHS合规

DIN 985 Nylon Insert Lock Nut — Zinc Plated Carbon Steel (Class 10)
材质 35K中碳钢热处理 · 镀锌 CR3 · M4–M24 · 超高强度精密级 · RoHS合规

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Material Selection Guide

Grade	Material	Surface	Strength	Corrosion Resistance	Best Application
A2	SUS304 Stainless	Passivated	A2-70	Good	Outdoor, food grade, light corrosion
A4	SUS316 Marine SS	Passivated	A4-70	Excellent	Marine, offshore, chemical processing
Class 4	Q195 Low Carbon Steel	Zinc CR3	Class 4	Moderate	General industrial, light construction
Class 8	35K Medium Carbon Steel	Zinc CR3	Class 8	Moderate	Heavy machinery, automotive, structural
Class 10	35K Medium Carbon Steel	Zinc CR3	Class 10	Moderate	High-precision, ultra-high-load joints

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DIN 985 vs DIN 982 — Low Type vs High Type

Feature	DIN 985 — Low Type (This Series)	DIN 982 — High Type
Nut Height	Lower profile (~0.8× thread dia.)	Higher profile (~1.0× thread dia.)
Prevailing Torque	Standard	Higher — better vibration resistance
Space Constraint	✅ Suitable for tight axial space	Standard clearance required
Typical Application	General locking, light-to-medium assemblies	Heavy vibration, high-load structural joints
ISO Equivalent	ISO 10511	ISO 7042
Thread Range	M4 – M24	M5 – M24

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Standard Overview — DIN 985 / ISO 10511

DIN 985 specifies prevailing torque hexagon nuts with a non-metallic insert — low type. The standard covers metric thread sizes M4 through M24 across property classes 4, 6, 8, and 10. DIN 985 has been superseded by ISO 10511, but dimensions remain fully interchangeable. The low-type profile is approximately 20% shorter than the high-type DIN 982, making it ideal for space-constrained assemblies while still providing reliable nylon locking performance.

• ✅ Thread range: M4 – M24
• ✅ Standard: DIN 985 / ISO 10511
• ✅ Nylon insert: Polyamide PA6 (max 120°C continuous)
• ✅ 5 material grades available: A2 / A4 / Class 4 / Class 8 / Class 10
• ✅ All grades RoHS compliant
• ✅ Mill certificates & inspection reports available on request

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Product Gallery

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⚙️ Why FULLERKREG

🏭 Direct Manufacturer — No middlemen. Factory-direct pricing with full production traceability.
📐 Precision to Standard — Every batch dimensionally verified against DIN 985 / ISO 10511 gauging.
🔩 5 Material Grades — A2 / A4 stainless and Class 4 / 8 / 10 zinc plated; one source for all specifications.
📦 Flexible MOQ — Bulk packing (1,000–50,000 pcs/bag) or retail packaging available.
📋 Full Documentation — Mill certificates, RoHS declarations, and dimensional inspection reports on request.
🚢 Global Shipping — Export experience to EU, North America, Southeast Asia, Middle East, and Oceania.