Material | Carbon steel ,Stainless steel ,Alloy |
Grade | 4,8,10,12 |
Standard | DIN,ASTM,ANSI,JIS,EN,ISO,AS,GB |
Surface Treatment | Blackened,Zinc plate,Yellow zinc,HDG,Thermodiffusion,Ruspert,Dacromet,Teflon,Phosphate,etc |
Diameter | M3-M100 |
Salt Spray Test | 24hr-1000hr |
Testing equipment | Automatic Optic Inspector,Projecting Apparatus,Salt Spray Test,Hardness/Tensile Machine |
Certification | SGS,RoHS,Material Certication,PPAP |
Sample | Accepted,we will send samples for your approval |
Package Description | Small box ,Carton ,bag ,small plastic bag and pallet |
Delivery Term | EXW,FOB,CIF,CNF |
Lead Time | Samples10- 15workdays,Mass productions 15-20 workdays after payment received. |
Payment Term | T/T, Paypal,Cash |
- Positive Locking with a Cotter Pin: The primary purpose of the slots is to align with a cross-drilled hole in the mating bolt or stud. Once the nut is tightened, a cotter pin or safety wire can be inserted through the slots and the bolt's hole. This creates a mechanical lock, physically preventing the nut from rotating loose, which is critical in high-vibration environments.
- Application and Standardization: This design makes it a standard and mandatory component in critical automotive (e.g., wheel bearings, steering linkages), aerospace, agricultural machinery, and other rotating shaft assemblies. It is standardized under specifications like ISO 7037 (slotted nuts) and DIN 935.
- Installation Consideration: Proper installation requires tightening the nut to the specified torque and then, if necessary, rotating it slightly to align a slot with the bolt's hole before inserting the cotter pin.
Castle nuts are indispensable for providing reliable, fail-safe locking in applications where vibration-induced loosening could lead to catastrophic failure.
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