Total found: 319 videos (page 3)
| Feature | NAS523 | Standard SHCS (Commercial) | | :--- | :--- | :--- | | | Reduced Diagonal / Low Profile | Standard Cylindrical / Hex | | Material | CRES (A-286) | Alloy Steel (often plated) | | Strength | Aerospace Grade (160+ KSI) | Variable (Commercial grades lower) | | Thread | UNJF (Radiused Root) | UNF/UNC (Sharp Root) | | Certification | Full Traceability (AMS) | Industrial/Commercial | | Primary Use | Structural Airframe | Machinery / General Repair |
Standardization also ensures structural integrity by guiding technicians in selecting the correct alloy. Rivets are identified by markings on their heads, such as a single dimple for 2117 alloy ("AD") or double dashes for 2024 alloy ("DD"). Some high-strength "icebox" rivets (like D and DD types) even require heat treatment and refrigeration before installation to maintain their structural properties. Conclusion nas523 pdf top
: Identifies the fastener's identity through a two-letter code. For example, the code "BJ" represents a standard universal-head rivet (MS20470AD) made from 2117 aluminum alloy. | Feature | NAS523 | Standard SHCS (Commercial)
