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Nut, Self-Locking, UNS S66286, 1200 °F, 160,000 psi, UNJ Thread


This specification establishes the requirements for the following types of self-locking nuts:

a. Wrenching Nuts: i.e., hexagon and double hexagon nuts.
b. Anchor Nuts: i.e., plate nuts, gang channel nuts, and shank nuts.

The wrenching nuts, shank nuts, and nut elements of plate and gang channel 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 1200 °F prior to room temperature testing.


Areas for Calculating Stress or Load Values for Metric MJ Externally Threaded Fasteners


Areas for the standard metric series of thread diameter-pitch combinations for aerospace externally threaded fasteners are established for the following conditions:

a. Area for ultimate shear stress or load in unthreaded shank.

b. Area for ultimate tensile stress or load in thread.

c. Area for stress durability test load in thread.

d. Area for stress-rupture test load at elevated temperature.

e. Area for tension-tension fatigue test load.


Bolts, Screws and Nuts - External Wrenching, Metric Threads - Design Parameters for


To fully define the following requirements for bolts with spline and hexagon heads of strength class up to but no including 1250 MPa:

a. Head dimensions (see 3.1)

b. Shank dimensions (see 3.2)

c. Geometric control (see 3.3)

d. Surface texture (see 3.4)

This document is based on one class of thread after all processing, including coating or plating, has been completed as follows: tolerance class 4h6h.

For particulars of thread, see AS1370. For thread runout and lead threads, see AS3062.

To fully define the following requirements for nuts with spline, plain hexagon and castellated configurations of strength class up to and including 1100 MPa:

a. Nut dimensions (see 4.1)

b. Geometric control (see 4.2)

c. Surface texture (see 4.3)

For particulars of threads, see AS1370.


Moment Weight of Turbine and Compressor Rotor Blades

To permit blade selection which will maintain the balance of rotating assemblies within acceptable limits during initial assembly and in operational maintenance. To standardize Turbine and Compressor rotor blade drawing data and blade marking requirements for the purpose of classifying blades with respect to their moment weight.

High Strength Elevated Temperature Bolting Practice


This SAE Aerospace Recommended Practice (ARP) provides general information on the design and installation of threaded fasteners in high strength and high temperature applications in propulsion systems. Some of the more common definitions of fastener terminology are also provided.


Safety Cable Kit Procurement Specification and Requirement for Use


This procurement specification covers aerospace quality safety cable kits consisting of safety cables and ferrules made from the same corrosion and heat resistant steels and a nickel base alloy of the type identified under the Unified Numbering system as follows:

a. UNS S30400 - Corrosion resistant steel (AMS 5697)

b. UNS S32100 - Corrosion and heat resistant steel (AMS 5689)

c. UNS N06600 - Nickel base alloy (AMS 5687)

d. UNS N06625 - Nickel Alloy, Corrosion Resistant (AMS 5666)

The requirements for installation practices are also specified.