. . .,
INCH-POUND
1
MIL-I-8846C
18 August 1992
SUPERSEDING
M2L-1-8846B
12 Dec 1973
MILITARY SPEC1F1CATION
INSERTS , SCREW-THREAD, HELICAL COIL
This specification is approved for use by the Department
of the Air
Force and is available for uaa by all Departments
and Agencies of “the Department
of Defense.
1. SCOPE
1.1 x. This specification covers helical coil screw-thread inserts made
from formed wire, the inner surfaces of which, after assembly, provide threads as
specified on the applicable MS standard, drawing, or part descriptive doc~ent.
1.2
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
I
(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
Beneficial comments (recommendations, additions, deletions ) and any pertinent
data which may be of use in improving this document should be addressed to:
Technology & Industrial Services Division, SA-ALC/TIKDM, Kelly AFB, TX 78241-5609
by using. the Standardization Document Improvement Proposal
(DD Form 1426)
appearing at the
end of this document or by letter.
AMSC NIA FSC 5340
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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