Slotted Nut
Automotive parts Axle and hub connection Steering system Machinery and equipment Construction machinery

Product Introduction
A slotted nut (also known as a castle nut) is a special hex nut with anti-loosening function. The top of the nut is machined with uniform slots, which can be used with bolts or shafts with holes. By installing a cotter pin, mechanical locking is achieved, effectively preventing the nut from loosening due to vibration.
WT Fasteners specializes in producing various types of slotted nuts, supporting standard and non-standard customization. We can provide different materials, sizes, strength grades, and surface treatment options according to customer requirements. They are widely used in automobiles, machinery, construction vehicles, agricultural machinery, and other fields.
Product Features
1. Efficient Anti-Loosening Design
The slotted structure combined with a cotter pin improves connection reliability and is suitable for long-term vibration environments.
2. High-Quality Materials
Made from high-quality carbon steel, alloy steel, and stainless steel, offering good strength and wear resistance.
3. Precision Machining
Accurate thread dimensions ensure a good fit with bolts, improving installation efficiency.
4. Custom Production Support
Custom special specifications according to customer drawings or samples, including size, slot type, material, and surface treatment.
Product Parameters
Product Name: Slotted Nut
English Name: Slotted Nut / Castle Nut
Standards:
DIN 935, ISO, ANSI, JIS
Materials:
Carbon steel, alloy steel, stainless steel 304/316
Strength Grades:
Grade 4, 6, 8, 10
Size Range:
M5-M48 (non-standard customization supported)
Surface Treatment:
White zinc, yellow zinc, hot-dip galvanizing, black oxide, Dacromet
Threads:
Metric threads, imperial threads
Application Areas
- Automotive wheel hubs and chassis systems
- Construction machinery
- Agricultural machinery
- Motorcycles and electric vehicles
- Mechanical transmission equipment
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Industrial equipment connections












































