Aerospace series - Bolts, MJ threads, in heat resisting steel FE-PA2601 (A286) - Classification: 900 MPa (at ambient temperature)/650 °C - Technical specification

This document establishes technical specifications for fasteners used in aerospace applications, specifically targeting high-temperature service conditions. It addresses the design, material requirements, and performance criteria for bolts manufactured from heat-resistant steel designated as FE-PA2601 (A286). The document focuses on mechanical strength characteristics, ensuring a tensile strength classification of 900 MPa under ambient temperatures while maintaining structural integrity at operating temperatures up to 650°C. It details the dimensional tolerances and thread geometry for MJ series threads, which are critical for ensuring compatibility and reliability in aerospace engine and structural assemblies. The technical requirements cover aspects such as surface treatment, hardness limits, and specific testing protocols necessary to verify compliance under thermal stress. By defining these parameters, the text provides a framework for manufacturers and engineers to produce components capable of withstanding extreme environmental conditions found in aviation and space exploration systems without compromising safety or performance integrity.