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White Paper to Support Supersession of MIL-S-8879C With AS8879C

2003-03-19
CURRENT
AIR5926
This paper was prepared to support supersession of MIL-S-8879C with Screw Thread Conformity Task Force selected industry standard AS8879C, published by the Society of Automotive Engineers (SAE). Other documentation changes will be covered by separate papers. Separate papers are anticipated for thread gaging issues, and thread gage calibration procedures. The STC-TF decided that the thread design standard needed to be completed before thread gage definition could be addressed. Thread gage definition has to be known before calibration procedures can be addressed.
Standard

Undercuts for Straight Screw Threads - Metric

1996-05-01
CURRENT
MA1508
This SAE Aerospace Standard (MA) provides recommended dimensional data for screw thread undercuts for straight “MJ” metric screw threads in accordance with MA1370.
Standard

Thread Inspection Practices

2010-01-26
CURRENT
AS5870
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).
Standard

TORQUE TIGHTENING THREADED FASTENERS

1982-02-15
HISTORICAL
AIR1471
To supply information on recommended assembly torque limits for tension type nuts and bolts of the following materials and plating combinations given in Table I.
Standard

Studs, Steel, UNS S66286, Aged After Roll Threaded, Procurement Specification For

2001-12-07
HISTORICAL
AS7481B
This procurement specification covers studs made from a corrosion and heat resistant age hardenable iron base alloy of the type identified under the Unified Numbering System as UNS S66286 and of 130 ksi tensile strength at room temperature, with maximum test temperature of parts at 1200 degrees F. Primarily for aerospace propulsion system applications where the coefficient of expansion of the stud is more compatible in light alloys, and where stress-rupture and creep resistance are of primary importance at elevated temperatures.
Standard

Studs, Steel, UNS S66286, Aged After Roll Threaded, Procurement Specification For

1991-01-07
HISTORICAL
AS7481
This procurement specification covers studs made from a corrosion and heat resistant age hardenable iron base alloy of the type identified under the Unified Numbering System as UNS S66286 and of 130 ksi tensile strength at room temperature, with maximum test temperature of parts at 1200 degrees F. Primarily for aerospace propulsion system applications where the coefficient of expansion of the stud is more compatible in light alloys, and where stress-rupture and creep resistance are of primary importance at elevated temperatures.
Standard

Studs, Steel, UNS S66286 Aged After Roll Threaded Procurement Specification for

1996-10-01
HISTORICAL
AS7481A
This procurement specification covers studs made from a corrosion and heat resistant age hardenable iron base alloy of the type identified under the Unifed Numbering System as UNS S66286 and of 130 ksi tensile strength at room temperature, with maximum test temperature of parts at 1200 °F.
Standard

Studs, Steel, Low Alloy, Heat Resistant Normalized and Tempered, Roll Threaded 135 000 psi Tensile Strength

1991-02-01
HISTORICAL
AS7458
This procurement specification covers aircraft quality studs made from a low alloy, heat resistant steel of the type identified under the Unified Numbering System as UNS K14675, and of 135 000 psi tensile strength at room temperature. Primarily for aerospace propulsion system applications where good strength at temperatures up to approximately 900° F is required and the part is protected against corrosion.
Standard

Studs, Steel, Low Alloy Heat Treated, Roll Threaded

1991-02-01
HISTORICAL
AS7456
This procurement specification covers aircraft quality studs made from a low alloy steel of the type identified under the Unified Numbering System as UNS G87400, and of a series of room temperature tensile strengths ranging from 125 000 psi to 185 000 psi. Primarily for aerospace propulsion system applications in light alloys where good strength is required and the part is protected against corrosion.
Standard

Studs, Steel, Low Alloy Heat Treated, Roll Threaded

2009-07-20
HISTORICAL
AS7456A
This procurement specification covers aircraft quality studs made from a low alloy steel of the type identified under the Unified Numbering System as UNS G87400, and of a series of room temperature tensile strengths ranging from 125 000 psi to 185 000 psi. Primarily for aerospace propulsion system applications in light alloys where good strength is required and the part is protected against corrosion.
Standard

Studs, Steel, Low Alloy Heat Treated, Roll Threaded

2010-06-24
HISTORICAL
AS7456B
This procurement specification covers aircraft quality studs made from a low alloy steel of the type identified under the Unified Numbering System as UNS G87400, and of a series of room temperature tensile strengths ranging from 125 000 psi to 185 000 psi.
Standard

Studs, Steel, Low Alloy Heat Treated, Roll Threaded

2016-04-20
CURRENT
AS7456C
This procurement specification covers aircraft quality studs made from a low alloy steel of the type identified under the Unified Numbering System as UNS G87400, and of a series of room temperature tensile strengths ranging from 125000 to 185000 psi.
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