Nas523 Rivet Code Pdf May 2026

This quadrant uses a two-letter code to represent the industry specification (like Military Standards (MS) or National Aerospace Standards (NAS) ) and the material alloy. BJ: MS20470AD (Universal head, 2117 aluminum). BB: MS20426AD (100° Countersunk head, 2117 aluminum). 2. Northeast (NE): Diameter & Head Side

The symbol consists of a central cross whose intersection marks the exact location of the rivet on the drawing. Information is coded into four quadrants around this intersection: Information Provided Upper Left Rivet Identity (Part Number & Alloy) BJ (MS20470AD), BB (MS20426AD) NE Upper Right Diameter and Manufacturing Head Location 3N (3/32" diameter, head on Near side) SW Lower Left Hole Preparation (Dimple/Countersink) D (Dimple), C (Countersink), D2C SE Lower Right Rivet Length -5 (5/16"), -6 (3/8") Deep Dive into the Quadrants 1. Northwest (NW): Rivet Identity nas523 rivet code pdf

Understanding the NAS523 Rivet Identification Code The is a standardized symbolic system used in the aerospace industry to provide detailed installation instructions for rivets on technical drawings and blueprints. Instead of writing out complex part numbers and installation steps, engineers use a single crosshair symbol to communicate four critical pieces of data simultaneously. The NAS523 Crosshair Symbol This quadrant uses a two-letter code to represent

The head is on the side of the metal closest to the person reading the drawing. F (Far Side): The head is on the opposite side. 3. Southwest (SW): Hole Preparation nas523 rivet code pdf

For further technical details or to see specific material charts, you can consult the full NAS523 Standard Practice document or educational resources from platforms like Scribd and StudyLib .

NAS523 Rivet Identification Guide | PDF | Rivet | Sheet Metal - Scribd