1、APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED NASA TECHNICAL STANDARD NASA-STD-6008 National Aeronautics and Space Administration Approved: 07-11-2008 Washington, DC 20546-0001 Superseding NASA-STD-(I)-6008 NASA FASTENER PROCUREMENT, RECEIVING INSPECTION, AND STORAGE PRACTICES FOR SPACEFLIGH
2、T HARDWARE Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 2 of 20 DOCUMENT HISTORY LOG Status Document Revision Approval Date Description Interim 09-12-2006 Interim Release Baseline
3、 07-11-2008 Baseline Release Transitioned from Interim Standard NASA-STD-(I)-6008 to NASA Technical Standard NASA-STD-6008. Change 1 07-09-2013 Removed the expiration date from the cover page. NASA standards no longer expire, but should still be reviewed every five years. Provided by IHSNot for Resa
4、leNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 3 of 20 FOREWORD This standard is published by the National Aeronautics and Space Administration (NASA) to provide uniform engineering and technical requirements
5、 for processes, procedures, practices, and methods that have been endorsed as standard for NASA programs and projects, including requirements for selection, application, and design criteria of an item. This standard is approved for use by NASA Headquarters and NASA Centers, including Component Facil
6、ities. This standard defines fastener control requirements for all fasteners used in spaceflight hardware. Fastener control consists of practices related to the procurement, receiving inspection, and storage of fasteners, such as threaded bolts, inserts, washers, rivets, set screws, shear pins, and
7、retention devices. Requests for information, corrections, or additions to this standard should be submitted via “Feedback” in the NASA Technical Standards System at http:/standards.nasa.gov. Original Signed By July 11, 2008 Michael G. Ryschkewitsch Approval Date NASA Chief Engineer Provided by IHSNo
8、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 4 of 20 SECTION TABLE OF CONTENTS PAGE DOCUMENT HISTORY LOG . 2 FOREWORD . 3 TABLE OF CONTENTS . 4 LIST OF TABLES 5 1. SCOPE . 6 1.1 Purpose . 6 1.2 Ap
9、plicability . 6 2. APPLICABLE DOCUMENTS . 6 2.1 General 6 2.2 Government Documents . 7 2.3 Non-Government Documents . 7 2.4 Order of Precedence . 8 3. ACRONYMS AND DEFINITIONS 8 3.1 Acronyms 8 3.2 Definitions 9 4. REQUIREMENTS . 11 4.1 Fastener Selection . 11 4.2 Approved Manufacturers and Distribut
10、ors . 11 4.3 Receiving Inspection: Screening and CVT . 12 4.4 Manufacturers Test Report (MTR) . 12 4.5 Certificate of Conformance (COC) 12 4.6 Traceability . 13 4.6.1 Complete Traceability 13 4.6.2 Partial Traceability . 13 4.7 Audits and Storage 14 4.8 Specialized Fasteners 14 4.9 Fasteners Critica
11、l for Mission Success . 14 4.10 Fasteners in Commercial-Off-The-Shelf (COTS) Hardware . 14 4.11 Quality Assurance Provisions . 15 4.11.1 Discrepant/Nonconforming Fasteners 15 4.11.2 Certification Validation Testing (CVT) Inspection 15 4.11.3 Visual Inspection 19 Provided by IHSNot for ResaleNo repro
12、duction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 5 of 20 SECTION TABLE OF CONTENTS PAGE 4.11.4 Hardness and Tensile Tests 19 4.11.5 Dimensional Inspection 20 4.11.6 Chemical/Elemental Analysis . 20 LIST OF TABLES Table T
13、itle Page 1 Fastener Procurement, Documentation, and Screening Requirements . 17 2 CVT and Inspection Requirements for Fasteners . 18 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED
14、6 of 20 NASA FASTENER PROCUREMENT, RECEIVING INSPECTION, AND STORAGE PRACTICES FOR SPACEFLIGHT HARDWARE 1. SCOPE 1.1 Purpose This standard establishes fastener procurement, receiving inspection, and storage practices for all fasteners used for spaceflight hardware that are procured, received, tested
15、, inventoried, or installed for space flight by a NASA Center, by a prime contractor, or by any other spaceflight hardware developer. 1.1.1 For the purposes of this document, spaceflight hardware shall include any government-furnished equipment (GFE) or payloads that are flown on spaceflight vehicle
16、s. 1.2 Applicability The requirements set forth in this document are the baseline fastener procurement, receiving inspection, and storage requirements for all NASA spaceflight hardware. This standard may be cited in contracts, program, and other Agency documents as a technical requirement. Requireme
17、nts are numbered and indicated by the word “shall.” Explanatory or guidance text is indicated in italics beginning in section 4. Individual NASA Centers may establish more restrictive program/project-specific requirements and/or guidelines, as appropriate. To do this, individual provisions of this s
18、tandard may be tailored (i.e., modified or deleted) by contract or program specifications to meet specific constraints and program/project needs. 1.2.1 Deviations from this document or tailoring of this standard for application to a specific program or project shall be formally documented as part of
19、 program or project requirements and approved by the Technical Authority. 2. APPLICABLE DOCUMENTS 2.1 General The documents listed in this section contain provisions that constitute requirements of this standard as cited in the text of section 4. 2.1.1 The latest issuances of cited documents shall b
20、e used unless otherwise approved by the assigned Technical Authority. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 7 of 20 The applicable documents are accessible via the NASA Tec
21、hnical Standards System at http:/standards.nasa.gov or may be obtained directly from the Standards Developing Organizations or other document distributors. 2.2 Government Documents National Aeronautics and Space Administration (NASA) MSFC-STD-3029, Tables IA-E Guidelines for the Selection of Metalli
22、c Materials for Stress Corrosion Cracking Resistance in Sodium Chloride Environments; Materials, Processes, and Manufacturing Department Metallic Materials and Processes Group (Multiprogram/Project Common-Use Document) NASA-STD-5019 Fracture Control Requirements for Spaceflight Hardware NPD 8730.5 N
23、ASA Quality Assurance Program Policy 2.3 Non-Government Documents American Society for Mechanical Engineering (ASME) ASME B1.3 Screw Thread Gaging Systems for Dimensional Acceptability - Inch and Metric Screw Threads, System 22 American Society for Testing and Materials (ASTM) ASTM F 606 Standard Te
24、st Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets Aerospace Industries Association/National Aerospace Standards (AIA/NAS) NASM1312-6 Fastener Test Methods, Method 6, Hardness NASM1312-8 Fastener Test M
25、ethods, Method 8, Tensile Strength NAM1312-108 Fastener Test Methods, Metric, Method 108, Tensile Strength Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 8 of 20 American National S
26、tandards Institute (ANSI)/American Society for Quality (ASQ) ANSI/ASQ Z1.4-2003 Sampling Procedures and Tables for Inspection by Attributes 2.4 Order of Precedence This document establishes requirements for fastener procurement, receiving inspection, and storage practices but does not supersede nor
27、waive established Agency requirements found in other documentation. 2.4.1 Conflicts between this standard and other requirements documents shall be resolved by the responsible Technical Authority. 3. ACRONYMS AND DEFINITIONS 3.1 Acronyms AIA Aerospace Industries Association ANSI American National St
28、andards Institute ASME American Society of Mechanical Engineers ASQ American Society for Quality ASTM American Society for Testing and Materials COC Certificate of Conformance COTS Commercial Off-the-Shelf CVT Certification Validation Testing FC Fracture-critical GFE Government-furnished Equipment L
29、RF Low-Risk Fracture M pyrotechnic fasteners; non-metallic fasteners or commercial fasteners such as eyebolts, clevises, hooks, wire rope, turnbuckles, and continuous threaded rods; as well as those not otherwise specified. Supplier: A fastener manufacturer or distributor. Provided by IHSNot for Res
30、aleNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 11 of 20 Technical Authority: The agency or organization that is responsible for the technical details of a particular design and the resolution of any associat
31、ed technical issues. 4. REQUIREMENTS The requirements set forth in this document are the baseline fastener management and control requirements for all spaceflight hardware. Fastener management and control pertains to the procurement, receiving inspection, and storage of fasteners. Any deviations fro
32、m these requirements shall be approved by the governing Technical Authority for the program/project. Specific requirements for fastener control are contained in this section. In addition, the majority of the requirements are summarized in tables 1 and 2. Specialized fastener requirements are provide
33、d in section 4.8. 4.1 Fastener Selection 4.1.1 All fasteners used on spaceflight hardware shall be selected so that they are controlled by government or industry specifications that include design, performance, and quality assurance requirements. 4.1.2 Metallic fastener materials shall be selected f
34、rom tables IA-E of MSFC-STD-3029, Guidelines for the Selection of Metallic Materials for Stress Corrosion Cracking Resistance in Sodium Chloride Environments. These “table I” alloys exhibit a high resistance to stress corrosion cracking. 4.1.3 Use of other (non-table I) metallic materials shall requ
35、ire documentation of acceptance rationale in a Material Usage Agreement (MUA) that is approved by the responsible NASA materials and processes (M NAM1312-108, Fastener Test Methods, Metric, Method 108, Tensile Strength; ASTM F 606, Standard Test Methods for Determining the Mechanical Properties of E
36、xternally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets, or a NASA-approved equivalent standard. b. The location of the tensile break and the ultimate load or ultimate strength (whichever is required by the specification) determined shall be recorded. c. The speci
37、fication minimum value shall also be recorded for comparison. Load extension curves are not required. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NASA-STD-6008 APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 20 of 20 4.11.4.3 Hardness Subst
38、itution for Tensile Test Hardness testing may be substituted for tensile testing (for fail safe fasteners only) if the fastener is too short for tensile testing. a. When choosing hardness testing as a substitution, consideration shall be given to the correlation between hardness and tensile data. In
39、 addition, when hardness testing is substituted, a microstructural evaluation of the fastener lot is required to demonstrate that it meets the requirements of the applicable fastener procurement specification. b. This microstructural examination shall consist of inspection for gross defects or anoma
40、lies, a check of the flow lines pertaining to forging and/or rolling operation(s), and a grain size determination. 4.11.5 Dimensional Inspection 4.11.5.1 One hundred percent (100%) dimensional inspection shall be required for fracture-critical, mission-critical, and low-risk fasteners for conformanc
41、e to dimensional requirements. One hundred percent (100%) indicates that every fastener must be inspected, not that every dimensional characteristic of each fastener must be inspected. 4.11.5.2 The dimensional characteristics of the remaining categories of fasteners, with the exception of retention
42、devices, shall be inspected on a sampling basis as specified in table 2. 4.11.5.3 For threaded products, dimensional inspection of the threads shall be performed according to ASME B1.3, Screw Thread Gaging Systems for Dimensional Acceptability - Inch and Metric Screw Threads, System 22. 4.11.5.4 Dim
43、ensional inspection shall also include verification of the head height, fillet radius, thread length, and shank length. 4.11.6 Chemical/Elemental Analysis Chemical/elemental analysis shall be performed on fastener materials on a sampling basis, using any quantitative or semi-quantitative chemical/el
44、emental analysis technique, as specified for the fastener types listed in table 2. A quantitative Optical Emission Spectroscopy (OES) analysis is destructive to the fastener but is the preferred test method. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
