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Nuts, Self-Locking, UNS N07001 730 °C, 1100 MPa, and 1210 MPa Procurement Specification for, Metric
- Aerospace Standard
- MA1943B
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This procurement specification covers aircraft quality self-locking nuts for wrenching (hex, spline) and anchor (plate, gang channel, shank) types of nuts made from a corrosion and heat-resistant nickel-base alloy of the type identified under the Unified Numbering System as UNS N07001. Tension height nuts having overall length of threaded portion not less than 1.2 times the nominal thread diameter have 1210 MPa minimum tensile strength at room temperature. Shear height nuts having shorter threaded portion have 1100 MPa minimum tensile strength at room temperature. Maximum test temperature of parts is 730 °C.
Rationale
Delete MIL-STD-105 sampling requirements, extensive revision to Section 4 and associated tables (quality assurance provisions) to acceptance based on zero defectives, update FPI references, general update of references, and general editorial revisions.
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Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| Unnamed Dataset 5 | ||
| Table 1 | Axial tensile load and tensile area | |
| Table 2 | Wrench torque | |
| Table 3 | Push out load | |
| Table 4 | Torque out load | |
| Table 5 | Locking feature torques and assembly torque | |
| Table 6 | Assembly torque for accelerated vibration test | |
| Table 7 | Summary of acceptance tests | |
| Table 8 | Summary of qualifications tests | |
| Table 9 | Classification of visual and dimensional characteristics | |
| Table 10 | Sampling data: visual and dimensional characteristics | |
| Table 11 | Sampling data: mechanical and metallurgical characteristics | |
| Unnamed Dataset 17 | ||
| Unnamed Dataset 18 | ||
| Table C1 | Dimensions for test apparatus, mm | |
| Unnamed Dataset 20 | ||
| Table D1 | Dimensions for test apparatus, mm | |
| Unnamed Dataset 22 | ||
| Table E1 | Maximum mandrel pitch diameter | |
| Table E2 | Minimum mandrel thread dimensions | |
| Unnamed Dataset 25 | ||
| Table F1 | Bolt and spacer length dimensions and bolt elongation | |
| Unnamed Dataset 27 | ||
| Unnamed Dataset 28 | ||
| Table J1 | Maximum depth of permissible surface discontinuities, mm |
Issuing Committee
E-25 General Standards for Aerospace and Propulsion Systems
The SAE E-25 General Standards for Aerospace & Propulsion Systems committee addresses aerospace propulsion systems and components. These systems and components include bolts, screws, nuts, washers, studs, rivets, pins, covers, O-rings, brackets, plugs and associated procurement requirements, as well as solid film lubricants and design specifications for screw threads and fastener assembly requirements.
Reference
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