AIA/NAS NASM8846 Inserts, Screw-Thread, Helical Coil

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AIA/NAS NASM8846 Document Information:

Title
Inserts, Screw-Thread, Helical Coil

Aerospace Industries Association of America Inc.

Publication Date:
May 1, 1998

Scope:

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)

Keywords:

Free Running
Screw Locking
Tanged Inserts
Tangless Inserts

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