DIN981 Slotted Lock Nuts | SS304/316 Bearing Nuts - HighFasteners

Product Overview

Slotted Lock Nuts (also known as castle nuts) are designed for use with cotter pins to prevent loosening in high-vibration applications. Made from premium stainless steel, they offer excellent corrosion resistance and durability for heavy industry, mining, and machinery.

Multiple surface treatments available including zinc plated, black oxide, galvanized, and passivated finishes.

Key Features:

Secure Locking: Slotted design allows cotter pin insertion for reliable anti-loosening performance.

Corrosion Resistant: Stainless steel with optional protective finishes for harsh environments.

Versatile Standards: Compliant with DIN and GB standards, available in metric and imperial sizes.

Technical Specifications:

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Factory Direct Price | Fast Delivery | OEM Service

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Detailed Product Gallery

Manufacturing & Quality Control

Advanced Cold Heading Precision manufacturing.

Optical Sorting 0-PPM defects.

Lab Testing Tensile & Salt Spray.

Project References

Heavy Industry (Global) Vibration-Resistant Locking

Mining Equipment High Reliability in Harsh Conditions

Machinery & Appliances Secure Fastening Solutions

Frequently Asked Questions

Q: Can I get free samples?
Yes! We provide free samples (shipping cost on you).

Q: What standards and MOQ do you support?
DIN / GB standards. MOQ starts at 1000 pcs, flexible for standard items.

Q: What certifications do you have?
ISO9001:2015 certified. Full inspection report included.

Q: What is your delivery time?
Stock items: 3-7 days. Custom production: 20-30 days.

Q: Can you produce custom sizes?
Yes, OEM/ODM supported. Send drawings for quote within 24 hours.

Q: What are your payment terms?
T/T (30% deposit, 70% before shipment). L/C available for long-term partners.