A: Absolutely. SSDs have no moving parts, but the spacers help center the drive in a 3.5" adapter.
The is a high-precision, unthreaded sleeve spacer specifically engineered for aerospace and military applications. Governed by the National Aerospace Standards (NAS) developed by the Aerospace Industries Association (AIA), these components are designed for high-stress environments where reliability and traceability are critical. Key Specifications 5 (5/16") Aluminum Round NAS42 Spacer | Lyn-Tron
Typically 2024-T3 aluminum (AMS-QQ-A-225/6), favored for its high strength-to-weight ratio. nas42 spacers
Additionally, NAS42 spacers are essential for electrical isolation and thermal management. In avionics bays, spacers are used to mount electronic rack units, creating airflow gaps to prevent overheating. In some configurations, non-conductive sleeves or specific metal pairings are used to prevent galvanic corrosion between dissimilar metals—a common issue in airframes constructed from aluminum and carbon fiber.
The choice of material is a deliberate engineering decision. Steel spacers offer immense shear strength and are used in high-load areas, such as engine mounts or wing spar assemblies. Conversely, aluminum spacers are employed where weight savings are paramount, allowing engineers to "shave" ounces off an aircraft’s total mass without sacrificing structural alignment. Furthermore, the surface finish of a NAS42 spacer is often treated to prevent galling and corrosion, ensuring that the spacer does not seize onto the fastener or react chemically with the surrounding structure over time. A: Absolutely
Indicates the outside diameter (e.g., -4 for 1/4" OD).
Mechanical hard drives generate heat and low-frequency vibrations. Over time, these micro-vibrations can increase seek errors and reduce drive lifespan. The replace standard flat-head screws or rubber grommets with a rigid, precision-engineered gap that isolates each drive. Governed by the National Aerospace Standards (NAS) developed
"My NAS42 is only 6 months old, but the drives sound like they are rattling."