ECSS-Q-ST-70-46C

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ECSS‐Q‐ST‐70‐46C 31 July 2008 1 Scope This Standard defines the requirements for manufacturing, provision, inspection and quality control of high‐quality threaded fastening devices (bolts, nuts, studs and screws) hereafter referred to as threaded fasteners or fasteners, used in space hardware. This Standard does not include a complete review of the factors relevant to the fabrication of high quality threaded fasteners. It provides the definition of the technical requirements and quality control procedures to be applied in the fabrication and supply of threaded fasteners for spacecraft applications. Fasteners for spacecraft applications are those aerospace standard fasteners (i.e. in conformance with LN, DIN or other national or international aerospace standards), or those fasteners meeting or exceeding the requirements in ISO 4759‐1:2000 for “Product grade A”, which also fulfil the requirements for space applications as specified in the present document. This standard may be tailored for the specific characteristics and constraints of a space project in conformance with ECSS‐S‐ST‐00. 6
ECSS‐Q‐ST‐70‐46C 31 July 2008 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this ECSS Standard. For dated references, subsequent amendments to, or revision of any of these publications, do not apply. However, parties to agreements based on this ECSS Standard are encouraged to investigate the possibility of applying the more recent editions of the normative documents indicated below. For undated references, the latest edition of the publication referred to applies. ECSS‐S‐ST‐00‐01 ECSS System – Glossary of terms ECSS‐E‐ST‐32‐01 Space engineering — Fracture control ECSS‐Q‐ST‐70 Space product assurance — Materials, mechanical parts and processes ECSS‐Q‐ST‐70‐02 Space product assurance — Thermal vacuum outgassing test for the screening of space materials ECSS‐Q‐ST‐70‐29 Space product assurance — Determination of offgassing products from materials and assembled articles to be used in a manned space vehicle crew compartment ECSS‐Q‐ST‐70‐36 Space product assurance — Material selection for controlling stress‐corrosion cracking ECSS‐Q‐ST‐70‐37 Space product assurance — Determination of the susceptibility of metals to stress‐corrosion cracking ECSS‐Q‐ST‐70‐71 Space product assurance — Data for selection of space materials and processes ISO 204:1997 Metallic materials — Uninterrupted uniaxial creep testing in tension — Method of test ISO 225:1998 Fasteners — Bolts, screws, studs and nuts — Symbols and designations of dimensions ISO 1502:1996 ISO general — purpose metric screw threads — Gauges and gauging ISO 2859‐1:1999 Sampling procedures for inspection by attributes, Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot‐by‐lot inspection 7
Page 1 and 2: Space product assurance ECSS-Q-ST-7
Page 3 and 4: ECSS‐Q‐70‐46A 21 January 2000
Page 5: ECSS‐Q‐ST‐70‐46C 31 July 20
Page 9 and 10: ECSS‐Q‐ST‐70‐46C 31 July 20
Page 11 and 12: 4.1 Fabrication 4.1.1 General ECSS
Page 15 and 16: 4.2.3 Head-to-shank fillet ECSS‐Q
Page 19 and 20: 4.3.2 Hardness test 4.3.2.1 General
Page 21 and 22: 4.3.4 Shear test 4.3.4.1 Preconditi
Page 23 and 24: Figure 4‐7: Schematic of an examp
Page 25 and 26: 4.4.2.3 Sampling procedure ECSS‐Q
Page 31 and 32: Inspection method Stress‐corrosio

ECSS-Q-ST-70-46C

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