Self-Locking Counter Nuts / PAL Nuts (DIN 7967) — Stainless Steel A2 (SUS304)

FULLERKREG DIN 7967 PAL nuts are thin all-metal self-locking counter nuts featuring a unique radial-slot spring-action locking mechanism. The nut body is slotted through, and the two halves are offset during manufacture so that when tightened onto a bolt, the spring tension of the steel grips the thread flanks and resists loosening under vibration and dynamic loads. This fully metallic design makes DIN 7967 PAL nuts suitable for elevated temperatures where nylon-insert nuts cannot be used. Manufactured from SUS304 austenitic stainless steel (A2), bright-finished and passivated for excellent corrosion resistance.

Key Specifications

How PAL Nuts Work — vs. Other Locking Nuts

Dimensional Data (DIN 7967) — Series 1 Coarse Thread

All dimensions in mm per DIN 7967. Tolerances per ISO 4759-1. Series 1 = metric coarse thread (standard). Series 2 & 3 = fine pitch threads (available on request).

* Unit weights (g/pc) are derived from DIN 7967 standard weight data (kg/1000 pcs) and are approximate reference values based on SUS304 density. Actual weight may vary ±5% due to manufacturing tolerances. Contact FULLERKREG for certified weight data if required. v = slot offset dimension.

Selection Guide

Standard Reference

These nuts are manufactured to DIN 7967 — Self-locking counter nuts, prevailing torque type, all-metal. The standard defines three series: Series 1 (metric coarse thread, 9 locking teeth), Series 2 and Series 3 (metric fine pitch threads, 9 locking teeth). 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. Unlike nylon insert nuts (DIN 985, DIN 6926), DIN 7967 PAL nuts are fully metallic and are not subject to temperature or chemical limitations imposed by non-metallic inserts.

Related standards: ISO 7042 (all-metal prevailing torque hex nuts) · DIN 985 (nylon insert lock nut) · DIN 439 (thin hex nut / jam nut) · ISO 2320 (prevailing torque requirements) · ISO 4759-1 (dimensional tolerances)

Product Gallery

DIN 7967 PAL Self-Locking Counter Nuts — A2 Stainless Steel (SUS304), Bright Passivated

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 — SUS304 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.