Nas523 Rivet Code Pdf Online

Specifies additional installation details or material types.

Interpretation: This is a specific rivet series (AD) with a diameter code of 4. Since it is a rivet callout, the diameter is calculated as 4 × 1/32 inch = 1/8 inch (0.125 inch). The manufactured head is to be installed on the near side (N) of the assembly. The lower left quadrant contains a "C", indicating the hole must be countersunk to accept a flush rivet head. The length code is 6.

: Offers high-level engineering data on fastener materials, strengths, and design criteria. NAS523 Rivet Identification Guide | PDF - Scribd

Even experienced technicians misread the code. Here are the top three errors to avoid: nas523 rivet code pdf

For a complete list of material codes and head styles, technicians typically refer to the full NAS-523 Standard PDF or specialized guides like those found on Scribd and Studylib . Unit of Measurement Example Code Length Hole Prep D (Dimple), C (Countersink)

: "Icebox" rivets (2024-T alloy) requiring heat treatment and refrigeration before installation; identified by two raised dashes. Installation & Hole Preparation (SW Quadrant)

The significance of NAS523 is evident in numerous aerospace applications. Official part listings for aircraft fuselage sections routinely include notations such as "RIVET CODE PER NAS523" and "IDENTIFY PER HP8-5 TYPE I, CLASS 3". Specifies additional installation details or material types

The official NAS523 specification is a copyrighted document published by the Aerospace Industries Association (AIA) and must be purchased from authorized distributors.

: Companies like Boeing or Piper may use proprietary variations (e.g., BAC codes) that cross-reference with NAS523 standards .

Critical Note: In the official NAS523 PDF tables, the length is measured from under the head for universal head rivets, or overall length for countersunk rivets. Always verify the grip length (material stack thickness) plus clinch allowance using the formula provided in the specification. The manufactured head is to be installed on

However, the full code printed on engineering drawings and in the follows a logical structure:

Contains the rivet identity, typically a two-letter code representing the part number (AN or MS) and the material/alloy .