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Thread Inspection Practices
- Aerospace Standard
- AS5870
- Reaffirmed
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This document addresses AS8879 thread inspection issues relating to selection, usage and capability of gages. It addresses the selection of calibrated measurement gages, the need for defined quality metrics, the methodology of determining the appropriate guardband factors, and the minimum inspection requirements for single element pitch diameter gages.
Users of this document shall apply the information described herein for the evaluation of the capability of their measurements based on the measurement consumer risk. It involves the analysis of the measurement (product) distribution and biases of both the product and measurement system distributions. It protects the consumer from the worst case distribution results.
A whitepaper has been developed to provide supporting documentation and the rationale used in the development of this standard. This whitepaper will be published by the SAE as an Aerospace Information Report (AIR6553).
This document recommends the use of ASME B1.2 “Gages and Gaging for Unified Inch Screw Threads” or IFI 301 “Gage Calibration Requirements and Procedures for Thread Gages” as guides for establishing the minimum calibration requirements for all types of thread gages.
Rationale
AS5870 has been reaffirmed to comply with the SAE five-year review policy.
Recommended Content
Aerospace Standard | Measurement Uncertainty and Consumer Risk |
Aerospace Standard | Method Selection for Assessment of Nonconforming Levels in Parts Per Million (PPM) |
Aerospace Standard | Composite and Bonded Structure Engineers: Training Document |
Topic
Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
TABLE 1 | THREAD GAGING FOR EXTERNAL THREAD PRODUCT | |
TABLE 2 | THREAD GAGING FOR INTERNAL THREAD PRODUCT (NOTE ) | |
TABLE 3 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR EXTERNAL THREAD UNJ COARSE SERIES PRODUCT | |
TABLE 4 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR INTERNAL THREAD UNJ COARSE SERIES PRODUCT | |
TABLE 5 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR EXTERNAL THREAD UNJ FINE SERIES PRODUCT | |
TABLE 6 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR INTERNAL THREAD UNJ FINE SERIES PRODUCT | |
TABLE 7 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR EXTERNAL THREAD UNJ EXTRA FINE SERIES PRODUCT | |
TABLE 8 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR INTERNAL THREAD UNJ EXTRA FINE SERIES PRODUCT | |
TABLE 9 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR EXTERNAL THREAD UNJ EIGHT THREAD SERIES PRODUCT | |
TABLE 10 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR INTERNAL THREAD UNJ EIGHT THREAD SERIES PRODUCT | |
TABLE 11 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR EXTERNAL THREAD UNJ TWELVE THREAD SERIES PRODUCT | |
TABLE 12 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR INTERNAL THREAD UNJ TWELVE THREAD SERIES PRODUCT | |
TABLE 13 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR EXTERNAL THREAD UNJ SIXTEEN THREAD SERIES PRODUCT | |
TABLE 14 | GUARDBAND FACTORS AND INSPECTION LIMITS FOR INTERNAL THREAD UNJ SIXTEEN THREAD SERIES PRODUCT | |
Unnamed Dataset 17 | ||
Unnamed Dataset 18 | ||
Unnamed Dataset 19 |
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
Number | Title |
---|---|
AIR6553 | Measurement Uncertainty and Consumer Risk |
ARP9013 | Statistical Product Acceptance Requirements |
AS8879 | SCREW THREADS - UNJ PROFILE, INCH |
ASMEB1 | This document is not part of the subscrption. |
ASMEB1.2 | This document is not part of the subscrption. |
ASMEB89.7.4.1 | This document is not part of the subscrption. |
FAA-IR-01-02 | This document is not part of the subscrption. |
IFI301 | This document is not part of the subscrption. |
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