Studs, Steel, Low Alloy Heat Treated, Roll Threaded
This procurement specification covers aircraft quality studs made from a low alloy steel of the type identified under the Unified Numbering System as UNS G87400, and of a series of room temperature tensile strengths ranging from 125 000 psi to 185 000 psi.
Primarily for aerospace propulsion system applications in light alloys where good strength is required and the part is protected against corrosion.
Rationale:Added addittional definitions to para 2.2. Update para 3.5 by adding “two to” three threads in agreement with NASM1312-8 test methodology. Added para 4.2 and completely revised para 4.4.3, 4.4.5 and TABLES 4, 5, 6 and 7 by removing sampling in accordance with MIL-STD-105 (AQL) and replacing with accept on “zero”. General updating for SAE requirements for obsolete specifications and standards.