NASA MSFC STD 486 : 1992
Current
The latest, up-to-date edition.
STANDARD, THREADED FASTENERS, TORQUE LIMITS FOR
Hardcopy , PDF
English
01-11-1992
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1 Scope
2 Applicable Documents
3 Definitions
3.1 Breakaway Torque
3.2 Fastening System
3.3 Free Running Torque
3.4 Installation Torque
3.5 Locking Device
3.6 Self-Locking
3.7 Self-Locking Torque
3.8 Shear Application
3.9 Tensile Application
3.10 Torque Installation Sequence
3.11 Verification Torque
4 Requirements
4.1 Torque Limits
4.2 Torque Wrenches
4.3 Installation
4.4 Lubricants
4.5 Designer Information
Appendix A
A1. Scope
A2. Historical Background
A3. Detailed Requirements
A3.1 Torque Values for Standard and High Strength Steel
Threaded Fastener Systems
A3.2 Torque Values for 300 Series Corrosion Resistant Steel
(CRES) Threaded Fastener Systems
A3.3 Torque Values for 62 ksi Tensile Strength Aluminium
Alloy Threaded Fasteners, (2024-T4 and 7075-T6)
A3.4 Torque Values for UNS K66286 (A286) Fastener Systems
A3.5 Torque Values for UNS N07718 (Alloy 718) Fastener
Systems
A3.6 Torque Values for UNS R30035 (MP35N) Fastener Systems
A3.7 Torque Values for #2 Through #10 Thread Sizes
A3.8 Table Torque Values
A3.9 Safety Wiring and Cotter Pinning
A4. Notes
A4.1 Approved Lubricants
A4.2 Retorquing/Reuse
A4.3 Tables III-IX
A4.4 Table XI
A4.5 Electrical Connectors
Appendix B
B1. Scope
B2. Referenced Documents
B3. Definitions
B3.1 Abutment
B4. General Requirements
B4.1 Test Apparatus
B4.2 Test Specimens
B5. Detailed Requirements
B5.1 Test Procedures
B5.2 Retorquing
B6. Reports
Appendix C
C1. Scope
Establishes acceptable torque limits for threaded fasteners used in space vehicles and support equipment, methodology for establishing acceptable torque limits for same, and criteria for the use of torque wrenches and other torque indicating devices on such fasteners.
| DocumentType |
Standard
|
| Pages |
48
|
| PublisherName |
National Aeronautics and Space Administration
|
| Status |
Current
|
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| GGG-W-686 Revision E:1994 | WRENCH, TORQUE, UNIDIRECTIONAL |
| MIL-T-5544 Revision C:1991 | THREAD COMPOUND, ANTISEIZE, GRAPHITE-PETROLATUM |
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| MIL N 25027 : G | NUT, SELF-LOCKING, 250 DEGREES F, 450 DEGREES F, AND 800 DEGREES F |
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