| 1 | 2 <- (Top Left: Rivet Code/Specification | Top Right: Material Code) _______|_______ | 3 | 4 <- (Bottom Left: Diameter & Location | Bottom Right: Max Flushness/Dimple) | 1. Top-Left Quadrant: Rivet Code / Part Number
NAS523 Rivet Identification Guide | PDF | Rivet | Sheet Metal
The "rivet code" symbol used in NAS523 is a crosshair, dividing a circle into four quadrants, each containing a specific piece of data about the fastener.
The NAS523 rivet code system represents an essential tool for aerospace engineers, draftsmen, and manufacturing professionals. Understanding how to interpret the four-quadrant code format—basic fastener code, diameter with head location, hole preparation, and length code—enables accurate specification and installation of rivets in aircraft structures. For complete information, obtaining the official NAS523-2014 (Revision 31) specification from an authorized distributor is strongly recommended. This document provides the comprehensive tables and definitions necessary for full implementation of the standard in real-world engineering applications. nas523 rivet code pdf
The NAS523 rivet code is typically represented as a four-quadrant cross symbol positioned near the fastener location on an engineering drawing. Each quadrant conveys a specific type of information about the fastener.
If you need help finding specific structural data, let me know:
Searching for "nas523 rivet code pdf" often leads to outdated links, private paywalls, or forum posts with low-quality scans. Here are the legitimate sources for the official document: | 1 | 2 NAS523 Rivet Identification Guide
7050 Aluminum Alloy (High strength; features a raised cross).
This comprehensive guide breaks down the NAS523 riveting symbology, explains how to interpret its four-quadrant code, and provides a clear path to finding official PDF documentation. What is the NAS523 Rivet Code?
This quadrant contains a letter or letter combination that designates the exact alloy composition of the rivet. Using the wrong material can lead to galvanic corrosion or structural failure. 1100 Aluminum (pure aluminum, low strength) B: 5056 Aluminum (contains magnesium) D: 2017 Aluminum (Icebox rivets, requires heat treatment) Each quadrant conveys a specific type of information
: 100-degree countersunk head rivets used for flush surfaces to reduce aerodynamic drag.
In the world of aviation fasteners, the standard is the Rosetta Stone. It provides the standardized code system used to identify rivets and fasteners across the industry.
| Quadrant | Type of Information | |:---:|:---| | | Basic fastener code | | Upper Right | Diameter code + head location (N or F) | | Lower Left | Hole preparation (dimple or countersink) | | Lower Right | Length code |