Nas523 Rivet Code Pdf Jun 2026

2024 aluminum alloy, identified by two raised dashes; known as "icebox rivets," they must be heat-treated and refrigerated before use. D: 2017 aluminum alloy, marked with a raised dot. Installation Specifications

The core of the callout designates the standard design of the rivet, which dictates the head style (e.g., universal head vs. countersunk) and the manufacturing specification. : Universal head rivets (protruding). MS20426 / NAS1097 : 100-degree countersunk flush rivets. 2. The Material Code (The Letter Designation)

This upper-right quadrant specifies the rivet diameter (in 1/32nd-inch increments) and indicates which side the manufactured head should be placed. N : Manufactured head on the Near side. F : Manufactured head on the Far side. nas523 rivet code pdf

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(in 1/32" increments) and the required location of the manufactured head. The letters 2024 aluminum alloy, identified by two raised dashes;

The NAS523 standard defines a universal system of symbols and codes used on engineering drawings to specify solid rivets. Instead of writing out lengthy descriptions for every fastener on a blueprint, engineers use a standardized cross-shaped or alphanumeric code. This code tells the technician or buyer exactly what material, head style, diameter, and length are required.

: Monel (nickel-copper alloy, used in high-heat or corrosive environments). C : Corrosion-Resistant Steel (CRES / Stainless Steel). DD : Titanium (lightweight, ultra-high strength). 3. Rivet Diameter (In 1/32-inch Increments) countersunk) and the manufacturing specification

The core of the system is a four-cornered cross with a locating point at the center. Each quadrant represents a specific set of data:

: Approved alternative materials if the primary rivet is out of stock.

The AIA holds the copyright for NAS standards. While older standards like NAS523 are sometimes withdrawn or superseded, you can purchase a copy directly from their document distribution partner, IHS Markit (now part of S&P Global). Expect to pay $100-$200 for a digital PDF.