Self-Locking Counter Nuts / PAL Nuts (DIN 7967)

DIN 7967 PAL nuts are thin all-metal self-locking counter nuts that use a radial-slot spring-action mechanism to grip bolt thread flanks and resist loosening under vibration and dynamic loads — without nylon inserts, adhesives, or deformed threads. FULLERKREG supplies DIN 7967 PAL nuts across all standard material grades and surface finishes, from economical zinc-plated spring steel to marine-grade A4 stainless steel, covering M4 through M52 in Series 1 (coarse thread) and Series 2/3 (fine pitch) configurations.

DIN 7967 Sub-Series — Select by Material & Finish

PAL Self-Locking Counter Nuts (DIN 7967) — Spring Steel 65Mn, Zinc Plated (Cr3)
材质：Spring Steel 65Mn  ·  表面：Zinc Plated Cr3 (Blue/White)  ·  尺寸：M4–M52  ·  硬度：350–425 HV  ·  RoHS合规

Self-Locking Counter Nuts (DIN 7967) — Stainless Steel A2 (SUS304)
材质：SUS304 (A2)  ·  表面：洗白钝化 (Bright Passivated)  ·  尺寸：M4–M52  ·  耐温：≤300 °C  ·  通用耐腐蚀

Self-Locking Counter Nuts (DIN 7967) — Marine Stainless Steel A4 (SUS316)
材质：SUS316 (A4)  ·  表面：洗白钝化 (Bright Passivated)  ·  尺寸：M4–M52  ·  Mo合金  ·  海洋/化工级耐氯腐蚀

Material Selection Guide

Standard Overview — DIN 7967

DIN 7967 defines self-locking counter nuts (PAL nuts), prevailing torque type, all-metal. The locking action is achieved by a radial slot through the nut body combined with a deliberate thread offset between the two halves, creating a spring-like clamping force on the bolt thread flanks. Three series are defined: Series 1 (metric coarse thread, 9 locking teeth), Series 2 and Series 3 (metric fine pitch). Unlike nylon insert nuts (DIN 985), DIN 7967 PAL nuts are fully metallic — no temperature or chemical limitations from non-metallic inserts. Size range: M4 – M52.

Related standards: ISO 7042  ·  DIN 985  ·  DIN 439  ·  ISO 2320  ·  ISO 4759-1

Product Gallery

DIN 7967 PAL Self-Locking Counter Nuts — All Grades

Why FULLERKREG

🏭 Direct Manufacturer — No middlemen. Factory-direct pricing on all standard and custom fasteners.
📐 DIN 7967 Precision — Every batch produced and inspected to full dimensional and prevailing torque requirements.
🔩 Full Material Traceability — Mill certificates and RoHS compliance documentation available on request.
📦 Flexible MOQ & Bulk Packaging — From sample packs to pallet quantities; custom labeling and kitting available.
🌍 Global Wholesale Supply — Experienced in export documentation, HS code classification, and international logistics.
⚡ Fast Quotation — Submit your BOM or inquiry and receive a competitive quote within 24 hours.