NATIONAL AEROSPACE STANDARDS NAS623-4-7 Screws

( Brand: National Aerospace Standards ), ( Manufacturer Part Number: NAS623-4-7 ), ( Part Type: Screw )

Review NATIONAL AEROSPACE STANDARDS Screws 62

National Aerospace Standards (NAS) screws, specifically NAS623-4-7, are precision-engineered fasteners designed for use in critical aerospace applications. These screws conform to the rigorous standards set forth by SAE International's NAS623 series, which is widely adopted within the aerospace industry.

The NAS623-4-7 screws are characterized by their hexagonal head shape with a flat, unthreaded top that measures 0.156 inches (3.96 millimeters) in diameter. The hexagonal head provides a large contact area for wrenches or drivers, ensuring maximum grip and torque transfer during installation.

The screws come in various lengths to accommodate different assembly requirements. Each screw features a thread pitch of 0.203 inches (5.16 millimeters), which is a common thread pitch used in the aerospace industry. The threads are formed using a rolled thread process, ensuring uniform thread depth and consistency.

These screws are made of high-strength materials, typically 7075-T6 aluminum alloy or stainless steel, depending on the specific application's requirements. The material selection ensures the screws can withstand the extreme temperatures, pressures, and vibrations encountered during flight.

The NAS623-4-7 screws undergo stringent testing to ensure they meet or exceed the requirements of the NAS623 standard. These tests include tensile strength testing, proof load testing, and corrosion testing. The screws are also inspected visually and through non-destructive means to ensure they meet dimensional and surface finish requirements.

Overall, NAS623-4-7 screws are essential components in the assembly of aerospace structures and systems. Their adherence to NAS623 standards guarantees their reliability and durability under the most demanding conditions.

NAS623-4-7 screws, also known as AN4-7A screws, are a type of fastener commonly used in aerospace applications due to their high strength and corrosion resistance. Here are some pros and cons of buying NAS623-4-7 screws for your specific needs:

1. High Strength: NAS623-4-7 screws are designed to provide high tensile strength, making them ideal for applications where the screws will be subjected to significant loads.

2. Corrosion Resistance: These screws are often made of materials such as stainless steel, which provides excellent resistance to corrosion, making them suitable for use in harsh environments.

3. Standardization: NAS623-4-7 screws are recognized and standardized by the National Aerospace and Defense Contractors Accreditation Program (NADCAP), ensuring consistency and reliability in their production and quality.

4. Compatibility: These screws are interchangeable with AN4-7A screws, providing a wide range of sources and options for purchasing.

1. Cost: NAS623-4-7 screws can be more expensive than other types of screws due to their high strength and corrosion resistance properties, as well as their aerospace standardization.

2. Availability: While NAS623-4-7 screws are widely used in aerospace applications, they may not be as readily available from local hardware stores or online retailers as more common types of screws.

3. Specificity: These screws are designed for specific applications and requirements, such as high-strength and corrosion resistance, which may not be necessary for all projects.

NAS623-4-7 screws offer several advantages for applications where high strength and corrosion resistance are critical requirements. However, they come with a higher cost and may not be as readily available as more common types of screws. If your project requires the specific properties of NAS623-4-7 screws, it may be worth the investment. Otherwise, consider alternative options that may better fit your budget and availability needs.

If you require NAS623-4-7 screws for your project, it is recommended to source them from reputable aerospace suppliers or distributors to ensure their quality and consistency. Additionally, consider purchasing in bulk to take advantage of potential volume discounts and to ensure a reliable supply for future projects.

Details:

239 Aircraft Part For Sale: Screws Sale for 62. Airworthiness is ONLY determined by the FAA approved mechanic or certified repair station. P/N NAS623-4-7. Any is for the sole purpose of identifying an item.

part #: nas62347 prices

• $20.00-$200.00

specifications aviationpar:

• brand: National Aerospace Standards
• mpn: Nas623-4-7
• part type: Screw

general aviationpar:

• Parts Accessories > Aviation Parts Accessories > Parts
• condition: New

payments aviationpar:

• credit card: Mastercard
• wallet: Paypal
• other

returns aviationpar:

• policy: Returns Accepted
• paid by: Buyer
• time: 14 Days

seller aviationpar:

• rating: 99.9%
• city: Peoria, Arizona
• # reviews: 9229

offer aviationpar:

• best offers: True
• options: Ship-to-home
• started: August 17, 2025
• quantity: 1
• sold: 0
• availability: In Stock

shipping aviationpar:

• cost: $5.50
• type: Fixed
• transit: 5-10 Days
• class: Expedited
• service: Expedited

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