Nas523 Rivet Code Pdf ((top)) Jun 2026

Complete matrix tables for cross-referencing obscure material letters.

Unlike steel or copper rivets, aluminum rivets are generally identified by a combination of a raised dimple on the manufactured head and a specific anodized color. The NAS523 rivet code uses a .

Many aviation maintenance programs provide these, such as in AVAM 2102 AME Structure notes. Conclusion

Length in 1/16" increments (e.g., a "-6" indicates 6/16" or 3/8"). nas523 rivet code pdf

While basic charts cover common aluminum rivets, the official (published by the Aerospace Industries Association - AIA) is crucial for aerospace engineers, quality assurance inspectors, and procurement specialists. The official PDF includes:

Diameter in 1/32" increments and the location of the manufactured head (Near or Far). Alloy/Material

The first few letters indicate the specification standard the rivet conforms to. Many aviation maintenance programs provide these, such as

Note: For flush/countersunk rivets, length includes the head. For universal/protruding head rivets, length is measured from under the head to the end of the shank. = 4/16" (1/4") 7 = 7/16" 8 = 8/16" (1/2") Extra Modifiers: The Location of the Head

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The exact letter-to-fastener mapping table unique to that aircraft series. The official PDF includes: Diameter in 1/32" increments

As of 2025, many original equipment manufacturers (OEMs) like Boeing (BMS specifications) and Airbus (ABN specifications) have moved toward in-house standards. However, for:

Specific engineering tolerances for flushness and gap allowances. Updated tooling codes for automated riveting machines.