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Aerospace Industries Association , 05/01/1998
Publisher: AIA
File Format: PDF
$33.00$66.00
The inserts covered by this specification are intended for use in original design application, especially in soft materials, to provide protection against thread failures caused by stripping, fatigue, wear, corrosion, and seizing. They are also intended for use in the repair of damaged or worn threads not originally protected. The class 2 insert which has prevailing torque capabilities provides protection to the joint against loosening caused by vibration and impact loading, thus obviating the use of lock washers, lock wires, or other means of locking.
Scope. This specification covers helical coil screw-thread inserts made from formed wire, the inner surfaces of which, after assembly, provide threads as specified. Classification. Inserts shall be of the following types and classes, as specified (see 6.2). a. Type I - Coarse thread (1) Class 1 - Free running. (2) Class 2 - Screw locking (self-locking) b. Type II - Fine thread (1) Class 1 - Free running (2) Class 2 - Screw locking (self-locking). c. Type III - Taper pipe thread (1) Class 5 - NPT pipe thread (2) Class 6 - ANPT pipe thread THE INITIAL RELEASE OF THIS DOCUMENT SUPERSEDES MIL-I-8846, REVISION D, AMENDMENT 1, SUPPLEMENT 1. LIST OF CURRENT SHEETS NO. REV NO. REV NO. REV 1 NEW 6 NEW 11 NEW 2 NEW 7 NEW 12 NEW 3 NEW 8 NEW 13 NEW 4 NEW 9 NEW 5 NEW 10 NEW d. Type IV - Metric-spark plug thread (1) Class 3 - Staking (spark plug thread)
$27.00 $55.00
$33.00 $66.00