NAS 1802

NAS 1802 is a high-strength hex head screw designed for critical aerospace and high-performance industrial applications. It features a cruciform recess and a full-thread configuration, ensuring secure fastening, excellent torque control, and uniform load distribution.

Manufactured in compliance with Aerospace Standards (NAS), NAS 1802 fasteners from UPS Lakshmi deliver consistent performance where precision, strength, and reliability are essential.

NAS 1802 Product Specifications

Standard: NAS 1802
Fastener Type: Hex Head Screw
Recess Type: Cruciform Recess
Thread Type: Full Thread
Material: A286 CRES (Corrosion Resistant Steel)
Minimum Tensile Strength: 160 KSI (Ftu)

These fasteners maintain their mechanical properties under high temperatures and corrosive environments, making them ideal for demanding aerospace assemblies.

Applications NAS 1802

NAS 1802 fasteners are commonly used in:

Aerospace & Aviation Structures
Aircraft Engines and Sub-Assemblies
Defense & Space Systems

Why Choose NAS 1802 from UPS Lakshmi?

With over 65 years of manufacturing experience, UPS Lakshmi is a trusted supplier of aerospace and precision fasteners worldwide.

Strict quality control and inspection
High dimensional accuracy and repeatability
Reliable performance in critical operating conditions
Custom sizes and bulk supply options available

Frequently Asked Questions About NAS1802 Screws

What is a NAS1802 screw?

NAS1802 is a National Aerospace Standard covering socket head cap screws engineered for aerospace and high-integrity assemblies. These fasteners use a hex socket drive with a controlled head profile and thread form. The standard fixes dimensions, materials, and mechanical properties so each screw delivers dependable performance in critical joints.

How does NAS1802 differ from NAS1801?

Both standards sit in the same socket head cap screw family and share aerospace-grade control, yet they cover different thread lengths and grip configurations. NAS1801 screws are fully threaded, while NAS1802 screws provide a defined unthreaded grip section. That grip suits joints that require accurate alignment and clean shear loading between mating parts.

Which materials are NAS1802 screws made from?

These screws are commonly produced from alloy steel for high tensile strength or from A286 corrosion-resistant steel for heat and oxidation resistance. The right grade depends on load, temperature, and exposure. A286 performs in hot and corrosive environments, while alloy steel is used in strength-led structural and load-bearing applications.

Where are NAS1802 screws commonly used?

They are used in airframe structures, engine mounts, control assemblies, and other joints that demand strength, precision, and traceability. The grip length supports accurate fit and resists shear in stacked components. Engineers choose them for assemblies that are subject to vibration, cyclic loading, and strict safety certification requirements.