BMS 7-393
BMS 7-393 is a Boeing Material Specification (BMS) defining requirements for corrosion-resistant steel used in Boeing aircraft programs. Boeing BMS 7-series specifications cover stainless steel and precipitation hardening alloys for structural, precision machined, and fastener applications across Boeing commercial and defense aircraft families.
Material supplied to BMS7-393 must originate from Boeing-approved processors with full chemical, mechanical, and dimensional certification, and complete traceability confirming compliance with Boeing’s quality requirements.
BMS7-393 defines chemical composition, mechanical properties, heat treatment condition, and approved supply source requirements for corrosion-resistant steel procured under this specification. Boeing qualification of supply sources is required, with full certification traceability from melt through finished product.
- Boeing Aircraft Structural Components
- Corrosion-Resistant Precision Parts
- Airframe Structural Fittings
- Boeing Commercial and Defense Programs
Boeing Material Specifications
Boeing BMS 7-series stainless steel and precision alloy specifications for Boeing commercial and defense programs.
Certified Material for Critical Service
BMS 7-393 material is supplied with full Boeing-required certifications confirming chemical composition, mechanical test results, heat treatment condition, and complete heat-lot traceability from Boeing-approved processors per BMS7-393.