scope:

Purpose

The purpose of this NASA Technical Standard is to specify requirements for design and analysis of threaded fastening systems in NASA spaceflight hardware.

Applicability

This NASA Technical Standard is applicable to all NASA programs and projects. This NASA Technical Standard may not be applicable to Ground Support Equipment (GSE); NASA Technical Standard NASA-STD-5005, Standard for the Design and Fabrication of Ground Support Equipment, is applicable to GSE. Additional requirements for fracture control, nonmetallic structures, non-standard fasteners, and fasteners used in extravehicular activity (EVA) may apply.

This NASA Technical Standard is approved for use by NASA Headquarters and NASA Centers and Facilities, and applicable technical requirements may be cited in contract, program, and other Agency documents. It may also apply to the Jet Propulsion Laboratory (a Federally Funded Research and Development Center [FFRDC]), other contractors, recipients of grants and cooperative agreements, and parties to other agreements only to the extent specified or referenced in applicable contracts, grants, or agreements.

Verifiable requirement statements are designated by the acronym "TFSR" (Threaded Fastening Systems Requirement), numbered, and indicated by the word "shall"; this NASA Technical Standard contains 32 requirements. Explanatory or guidance text is indicated in italics beginning in section 4. To facilitate requirements selection by NASA programs and projects, a Requirements Compliance Matrix is provided in Appendix E.

Tailoring

Document tailoring of the requirements in this NASA Technical Standard for application to a specific program or project as part of program or project requirements and obtain formal approval by the delegated Technical Authority in accordance with NPR 7120.5, NASA Space Flight Program and Project Management Requirements.