NATIONAL AEROSPACE STANDARDS 1580A7-7 Mil Aircraft Close 4X Tolerance Screw Bolt Countersunk 7/16-20X1.11

( Brand: National Aerospace Standards ), ( Manufacturer Part Number: 1580A7-7 ), ( Part Type: Screw Bolt ), ( Size: 7-16/20 X 1.114 )

Review NATIONAL AEROSPACE STANDARDS 4x Pc Lot Mil Spec Aircraft Close Tolerance Screw Bolt Countersunk 7/16-20x1.11

The National Aerospace Standard (NAS) 1580A7-7 4x mil aircraft close tolerance screw bolt is a high-performance fastener engineered to meet the stringent requirements of the aerospace industry. This particular bolt is manufactured in the countersunk 7/16-20x1.11 configuration.

The 4x mil designation refers to the coating thickness of the bolt. This bolt features a 4 mil (0.004 inches) zinc electroplated coating, providing excellent corrosion protection. The close tolerance specification signifies that this bolt is manufactured to tight dimensional tolerances, ensuring optimal fit and function in demanding aerospace applications.

The countersunk 7/16-20x1.11 configuration means that the head of the bolt is recessed, allowing for the installation of sheet metal or other materials without interfering with their surface. The thread pitch is 20 threads per inch (TPI), and the thread diameter is 7/16 inches. The minor diameter of the threaded portion is 1.11 inches.

This NAS 1580A7-7 bolt is designed to meet the rigorous standards of the aerospace industry. It is suitable for use in applications where high strength, durability, and reliability are essential. The close tolerance and corrosion-resistant coating make it an ideal choice for structural components and other critical applications in aircraft manufacturing.

The NAS 1580A7-7 4x mil aircraft close tolerance screw bolt is a versatile fastener that can be used in various aerospace applications, including engine components, structural assemblies, and landing gear systems. Its high-performance design ensures that it can withstand the extreme temperatures, pressures, and stresses encountered in aerospace environments.

In summary, the NAS 1580A7-7 4x mil aircraft close tolerance screw bolt is a high-strength, corrosion-resistant fastener designed to meet the demanding requirements of the aerospace industry. Its 4 mil zinc electroplated coating, close tolerance manufacturing, and countersunk design make it an excellent choice for structural components and other critical applications in aircraft manufacturing.

Buying National Aerospace Standards (NAS) 1580A7-7 4x Mil, Close Tolerance Screw Bolts with Countersinks, 7/16-20x1.11: Pros, Cons, and Conclusion

This article aims to provide an informative analysis of the pros and cons of purchasing National Aerospace Standards (NAS) 1580A7-7 4x Mil, close tolerance screw bolts with countersinks, 7/16-20x1.11. These bolts are used extensively in the aerospace industry due to their high precision and strength.

1. High Precision: These bolts meet the stringent requirements of NAS 1580A7-7, ensuring they are manufactured to the closest tolerances possible. This high precision is essential for applications in the aerospace industry, where components must fit perfectly to ensure optimal performance and safety.

2. Strength: The 4x mil thread design provides increased load-bearing capacity, making these bolts suitable for applications that require high strength.

3. Countersinks: The countersinks on the bolts allow for flush installation, making them aesthetically pleasing and reducing the risk of thread damage during installation.

1. Cost: Due to their high precision and aerospace-grade materials, these bolts are more expensive than their commercial-grade counterparts.

2. Limited Availability: These bolts may not be readily available at local hardware stores or online marketplaces. Instead, they are usually sourced from specialized distributors or manufacturers.

3. Hand-Tightening Only: These bolts are designed for hand-tightening only, which may not be ideal for applications where torque is critical or where frequent disassembly is required.

The NAS 1580A7-7 4x Mil, close tolerance screw bolts with countersinks, 7/16-20x1.11, offer several advantages, such as high precision, increased strength, and flush installation. However, they also come with disadvantages, like higher cost, limited availability, and hand-tightening only.

If you are working in the aerospace industry and require bolts with the highest precision, strength, and flush installation, these NAS bolts are the best choice. However, if cost is a concern or if you need bolts for less critical applications, consider purchasing commercial-grade bolts that may be more affordable and readily available. Always ensure that the bolts you choose meet the specifications required for your application.

Details:

length : 1.114. Thread:7/16-20. Thread length : .615. 4x PC Lot Mil Spec Aircraft Close Tolerance Screw Bolt CounterSunk 7/16-20x1.11: Mil-Spec.

part #: 1580a77 price

• $49.99

specifications aviationpar:

• brand: National Aerospace Standards
• mpn: 1580a7-7
• part type: Screw Bolt
• size: 7-16/20 X 1.114

shipping aviationpar:

• type: Fixed
• transit: 4-9 Days
• service: Standard, Expedited
• cost: $0.00
• class: Standard, Expedited

general aviationpar:

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

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• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

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• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: May 26, 2026

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seller aviationpar:

• # reviews: 31840
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• city: Fort Smith, Arkansas

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