Nas523 Pdf Top |work| -
The defining feature of a NAS 523 bolt is the flange head. The standard typically specifies two variations of the flange bearing surface:
A standard NAS523 callout generally specifies four primary attributes:
2117 aluminum alloy (AD rivet, most common for structural repairs). Raised Dot: 2017 aluminum alloy (D rivet). nas523 pdf top
The NAS 523 PDF document provides a comprehensive overview of the standard, including its goals, architecture, and technical requirements. Here are some key aspects of the document:
The code is a standard practice in the aviation industry used to provide a shorthand identification of fasteners—specifically rivets—on engineering drawings. It uses a distinctive "crosshair" symbol divided into four quadrants (NW, NE, SW, SE) to detail the rivet's part number, diameter, length, and installation method. NAS523 Rivet Code Quadrants The code is read as follows: The defining feature of a NAS 523 bolt is the flange head
/ E : 7050 Aluminum Alloy (High-strength structural applications). What to Look for in a Top NAS523 PDF Reference Sheet
: Corresponds to an MS20426AD (or AN426AD) 100° countersunk flush-head rivet manufactured from 2117-T3 aluminum alloy. 2. Northeast (NE) Quadrant: Diameter & Head Location The NAS 523 PDF document provides a comprehensive
A primary source for AIA documents. Standards Global: Provides the PDF download.
| Code Example | Interpretation | Key Details | |---|---|---| | | Basic part number within the NAS523 system | The “BJ” prefix indicates a specific combination of fastener type, head style, and material; the digit communicates diameter or length | | BB-4N-CC | A complete NAS523 callout | BB identifies the specific fastener model; 4N indicates the fastener length; CC signifies the fastener is “double flushed” or requires a specific finish condition |
General hardware identification and customer specifications can be cross-referenced through Verus Aerospace documents. Key Identification Markers Rivet Type Head Marking 1100 Aluminum AD Dimple (Single) 2117-T3 Aluminum D Raised Dot 2017-T Aluminum DD Two Raised Dashes 2024-T Aluminum ("Icebox" rivets) NAS523 Rivet Identification Guide | PDF - Scribd