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The DIN935 Slotted Castle Nuts in A2-70 and A4-80 stainless steel grades are precision-engineered hexagonal fasteners with radial slots for enhanced anti-loosening security in high-vibration environments. These castle nuts feature a castellated top that aligns with cotter pins or wire locks, preventing rotation and ensuring reliable holds in machinery and automotive applications. Made from A2-70 (304 stainless steel) for general corrosion resistance with 700MPa tensile strength, or A4-80 (316 stainless steel) for superior performance in marine or chemical settings with 800MPa strength, they offer exceptional durability without coatings, maintaining a plain finish for hygienic and aesthetic appeal. Compliant with DIN935 standards, available in metric sizes M4 to M24, these nuts are ideal for axles, industrial equipment, and structural assemblies where vibration resistance is critical. Manufactured by Duojia in Hebei, China, they meet ISO9001, ISO14001, and ISO45001 certifications, providing eco-friendly, high-quality solutions for heavy and general industries. With a monthly supply of 10,000 pieces, customizable options, and global exports, these stainless steel slotted castle nuts deliver robust, maintenance-minimal fastening that combines strength, corrosion protection, and ease of use, making them essential for professionals seeking secure connections in demanding conditions like automotive suspensions or machinery mounts.
These DIN935 slotted castle nuts are designed with six radial slots on top, allowing insertion of cotter pins through aligned bolt holes to lock the nut against loosening from vibrations or torque. The A2-70 grade suits dry or mildly corrosive environments, while A4-80 excels in harsh, saline, or acidic conditions, both featuring a plain stainless steel surface that resists tarnishing and contamination. Thread sizes range from M5 to M36, with coarse and fine pitch options for precise bolt matching, ensuring compatibility in diverse setups. Duojia’s production utilizes advanced threading and stamping for dimensional accuracy, verified by SGS certification. Installation involves tightening to torque, aligning a slot with the bolt’s pin hole, inserting and bending the cotter pin for security—perfect for scenarios requiring frequent adjustments without compromising hold. For optimal use, select A2-70 for indoor machinery or A4-80 for outdoor or chemical exposure, replacing damaged nuts to maintain safety. These nuts support applications in automotive axles, industrial gears, and equipment frames, with minimum orders of 100 pieces and 14-30 day delivery in cartons or pallets. Exported worldwide, they provide a hygienic, non-reactive alternative to coated nuts, enhancing reliability in food processing or marine assemblies.
| Parameter | Details |
|---|---|
| Product Name | DIN935 Slotted Castle Nuts – A2-70/A4-80 Stainless Steel |
| Material | Stainless Steel (A2-70/304, A4-80/316) |
| Grade | A2-70, A4-80; Other grades: 4.8, 8.8, 10.9, 12.9, etc. |
| Surface Treatment | Plain |
| Size Range | M4-M24 (Metric, coarse and fine threads) |
| Thread Pitch | Coarse: 0.7-4 mm; Fine: 0.5-3 mm (varies by size) |
| Width Across Flats (s max) | 7mm-145mm (size-dependent) |
| Height (m max) | 5mm-100mm |
| Slot Width (n max) | 1.45mm-14.43mm |
| Standards | DIN935, ISO9001, ISO14001, ISO45001, SGS |
| Anti-Loosening | Slotted design for cotter pins |
| Packaging | Small Pack + Carton + Pallet or Bag/Box with Pallet |
| Minimum Order | 100 Pieces |
| Supply Ability | 10,000 Pieces per Month; 500 Tons per Month |
| Delivery Time | 14-30 Days depending on quantity |
These DIN935 slotted castle nuts excel with their castellated slots, enabling cotter pin integration for superior anti-loosening in vibrating systems, far beyond standard nuts. The A2-70 and A4-80 stainless steel constructions provide inherent corrosion resistance without additional treatments, with A4-80 offering enhanced molybdenum content for chloride-rich environments. Their plain finish ensures non-toxicity and ease of cleaning, ideal for sanitary applications, while the hexagonal shape facilitates wrenching in tight spaces. Available in various pitches, they offer flexibility for precise torque control, and the design accommodates repeated disassembly without wear. Duojia’s customizable features include size extensions up to M100, all tested for tensile strength and fit. These nuts resist environmental degradation, maintaining integrity in high-humidity or saltwater conditions, and their lightweight profile supports heavy loads without adding bulk. Eco-friendly manufacturing minimizes waste, aligning with ISO standards. This combination delivers vibration-proof security, hygienic reliability, and long-term durability, making them a preferred choice for applications where failure is not an option, such as in automotive, machinery, and marine engineering.
DIN935 Slotted Castle Nuts in A2-70/A4-80 stainless steel are essential for vibration-resistant fastening in dynamic environments across industries. In automotive sectors, they secure axles and suspension components, paired with cotter pins to prevent loosening during high-speed operations or rough terrain. Industrial machinery uses them for gear assemblies and rotating equipment, where the slotted design ensures safety in constant-motion settings. Marine applications benefit from A4-80’s saltwater resistance, fastening deck hardware and engine parts without corrosion risks. Construction and structural engineering employ these nuts in bolted joints for bridges or machinery frames, providing adjustable, secure holds. In aerospace and food processing, the hygienic stainless steel suits cleanroom or sanitary requirements, enabling easy inspections and replacements. Duojia’s globally supplied products support custom installations in medical devices or agricultural tools, with simple pin-locking enhancing reliability. Their versatility accommodates frequent adjustments, reducing maintenance downtime and improving operational safety in both heavy-duty and general projects worldwide.
