The KNRL CRES 4-40×5/8 0882-5 is a specialized fastener used in a variety of industries for its durability, corrosion resistance, and precise engineering. Whether you’re working in aerospace, automotive, or electronics, understanding the key features of this fastener will help you make an informed decision for your project. This article provides a detailed overview of the KNRL CRES 4-40×5/8 0882-5, its specifications, applications, benefits, and maintenance.
1. What is KNRL CRES 4-40×5/8 0882-5?
The KNRL CRES 4-40×5/8 0882-5 refers to a knurled stainless steel screw that is used primarily for fastening purposes. “CRES” stands for Corrosion-Resistant Steel, indicating that the material is made from a type of stainless steel that is highly resistant to corrosion, which makes it suitable for harsh environments.
2. Key Specifications
- Thread Size: 4-40
- Length: 5/8 inch
- Material: Stainless Steel (Corrosion Resistant)
- Part Number: 0882-5
- Head Type: Knurled
3. Thread Size 4-40 Explained
The thread size 4-40 refers to the standard thread size in imperial units. The “4” represents the screw’s diameter, and the “40” refers to the number of threads per inch (TPI). This combination is often used in small machinery and electronic equipment where precision fastening is essential.
4. Material: Corrosion-Resistant Steel (CRES)
CRES, or Corrosion-Resistant Steel, is a term commonly used in industries where exposure to moisture, chemicals, or other corrosive elements is a concern. Stainless steel in the KNRL CRES 4-40×5/8 0882-5 ensures longevity and maintains strength even in challenging environments such as marine applications or outdoor structures.
5. Applications of KNRL CRES 4-40×5/8
The KNRL CRES 4-40×5/8 0882-5 is versatile and can be used across various industries. Some common applications include:
- Aerospace: Used in aircraft components where durability and corrosion resistance are crucial.
- Automotive: Helps in assembling parts exposed to varying temperatures and moisture.
- Electronics: Ideal for fastening small, precise components in electronic devices.
- Marine: Corrosion-resistant properties make it perfect for use in boats, docks, and marine equipment.
6. Advantages of Knurled Head Design
The knurled head design of the KNRL CRES 4-40×5/8 0882-5 provides better grip, making it easier to tighten or loosen the screw manually. This is particularly useful in applications where tools may not be easily accessible, or where frequent adjustments are needed. Additionally, the knurling ensures that the screw stays in place, reducing the chances of slippage.
7. How to Choose the Right Size
Selecting the correct size of the KNRL CRES 4-40×5/8 screw depends on several factors:
- Application: Understand the weight and structural load the fastener will bear.
- Material Compatibility: Ensure the stainless steel material won’t react negatively with the materials it will be in contact with.
- Thread Depth: Calculate the required length to ensure that the screw fits securely into the material.
8. Installation Tips
- Pre-drill Holes: Always pre-drill holes when using knurled fasteners for a precise fit.
- Avoid Over-tightening: Over-tightening can cause damage to the material being fastened or strip the threads.
- Use Proper Tools: For knurled head screws, hand tightening may often be sufficient, but make sure to use the correct driver if extra torque is needed.
9. Maintenance and Durability
One of the key benefits of the KNRL CRES 4-40×5/8 0882-5 is its low maintenance due to its stainless steel construction. However, regular checks for any signs of wear, such as loosening or corrosion, especially in highly corrosive environments, can prolong its lifespan. In most cases, cleaning with water and mild soap will be enough to keep the fastener in top condition.
10. Where to Buy KNRL CRES 4-40×5/8 0882-5
You can find KNRL CRES 4-40×5/8 0882-5 fasteners at various hardware suppliers, online retailers, or specialized industrial stores. Some of the most reputable online sources include:
- McMaster-Carr
- Fastenal
- Grainger
11. Conclusion
The KNRL CRES 4-40×5/8 0882-5 is a high-quality, corrosion-resistant fastener designed for durability and ease of use. Its knurled head allows for easy handling, and the stainless steel construction ensures it withstands the elements. Whether you’re in aerospace, electronics, or automotive industries, this fastener is a reliable choice for many applications.
12. FAQs
Q1: What does the part number 0882-5 signify?
The part number 0882-5 helps identify the specific dimensions and material of the fastener, ensuring correct specification when ordering.
Q2: Can the KNRL CRES 4-40×5/8 be used outdoors?
Yes, thanks to its corrosion-resistant stainless steel material, it is suitable for outdoor use.
Q3: Is it suitable for high-temperature environments?
Stainless steel is typically resistant to high temperatures, but it’s important to verify the specific temperature rating for your project.
By choosing the KNRL CRES 4-40×5/8 0882-5, you’re opting for reliability, strength, and long-term performance in demanding environments.
