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Stainless steel Kep nuts are a practical solution when you need secure fastening that holds under vibration. These fasteners, also called Keps nuts or K-lock nuts, combine a hex nut with a free-spinning lock washer.
That built-in washer helps prevent loosening. It also speeds up installation since you do not need a separate washer.
Manufactured from 18-8, or 304 stainless steel, these locking nuts offer strong corrosion resistance. They perform well in environments exposed to moisture, humidity, and mild chemicals.
You will find stainless steel Kep nuts used in:
They are a reliable choice when you need consistent fastening and quick installation.
Our Range of Stainless Steel Kep Nuts Includes
Marsh Fasteners offers a wide range of stainless steel kep nuts, including the following:
External Tooth Kep Nuts
External tooth Kep nuts feature a lock washer with teeth that extend outward. These teeth bite into the surface during tightening.
That added grip improves resistance to vibration.
Common Applications
Available Options
Standard Stainless Steel Kep Nuts
Standard stainless steel Kep nuts combine a hex nut with a captive washer for general-purpose use.
They are widely used across industries due to their ease of installation.
Technical Specifications
| Product Type | Sizes (Leg Length × Thickness × Length) | Materials | Typical Load / Strength | Standards / Notes |
|---|---|---|---|---|
| External Tooth Kep Nuts | Various UNC / UNF thread sizes | 18-8 / 304 Stainless Steel | Strong locking resistance against vibration | External tooth washer improves grip |
| Internal Tooth Kep Nuts | Multiple thread sizes | 18-8 / 304 Stainless Steel | Moderate locking strength | Lower external profile |
| Standard Kep Nuts | Common machine screw thread sizes | 18-8 / 304 Stainless Steel | Secure fastening with integrated washer | Eliminates need for separate lock washer |
| Captive Washer Design | Washer rotates freely before installation | Stainless steel | Simplifies assembly and installation | Combines nut and washer in one component |
Benefits of Stainless Steel Kep Nuts
Understanding the benefits of Kep nuts helps you choose the right fastener for your project. The benefits include:
Integrated washer design
Vibration resistance
Corrosion resistance
Consistent performance
These vibration resistant nuts are commonly used where movement or mechanical stress is present.
Choosing the Right Kep Nut for Your Project
Selecting the right fastener matters. Poor selection can lead to loosening or failure.
Match the thread size
Choose a Kep nut that fits your bolt or screw exactly. Incorrect sizing leads to poor performance.
Select the correct washer style
Your application will determine the best option.
Consider material requirements
18-8 stainless steel works for most environments. It provides solid corrosion resistance without added cost.
Evaluate the environment
Ask yourself:
These factors affect fastener performance.
Factor in installation needs
Kep nuts simplify assembly because the washer is already attached. This reduces labor time and improves efficiency.
Why Choose Marsh Fasteners?
Marsh Fasteners supplies high-quality stainless fasteners for a wide range of industries.
What you can expect
You get access to a trusted stainless fastener supplier with experience in marine, construction, and industrial applications.
What Our Customers Say
These guys always have what I’m looking for in stock. I got tired of going to Home Depot to in search of the fasteners I needed for a project only to find out that either they didn’t stock that size, they were out of them or they only had packages of one or two of that particular fastener. Not to mention spend 15 minutes sorting through various packages put back in the wrong place. I’m always building or repairing things and some of the fasteners I need are a weird size. Marsh Fasteners always has them in stock, their staff is polite, and their prices are fair.
I love marsh fasteners!! Kathy and her grandson are the nicest people you will ever meet!! Kathy and Chris were my old bosses. Kathy is the best.
This is a great company to buy stainless steel fasteners from. Fast service, quality products, and competitive pricing. Don’t waste your time at the Big Orange or Big Blue box stores.
Contact Us
Need help selecting the right stainless steel Kep nuts?
The team at Marsh Fasteners can help you choose the correct size, material, and configuration for your application.
Contact us for:
- Product recommendations
- Bulk pricing
- Availability and lead times
Reach out today for expert support and fastener guidance.
