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Spacers and Washers, Procurement Specification for, Metric

2024-02-28
WIP
MA1784B
This specification covers metric aircraft quality spacers for use as positioners for tubes, flat washers for use as load spreaders, galling protection of adjacent surfaces and or material compatibility, and key or tab washers for use as locks for bolts, nuts, and screws.
Standard

Nut, Self-Locking, 0.7500 thru 1.5000 Thread Sizes, UNS S66286, 160,000 psi, 800 °F, UNJ Thread – Procurement Specification

2024-02-06
CURRENT
AS5377A
This specification establishes the requirements for self-locking wrenchable nuts with thread sizes 0.7500 thru 1.5000 inches. The nuts are made of corrosion and heat resistant precipitation hardenable iron base alloy of the type identified under the Unified Numbering System as UNS S66286 and of 160,000 psi axial tensile strength at room temperature, with maximum conditioning temperature of parts at 800 °F.
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