2840-01-497-4177 INSERT,AIRCRAFT,MAT Index 5307-01-497-4178 STUD,LOCKED IN

National Stock Number:
5325-01-497-4177

Federal Supply Class:
5325

National Item Identification Number:
014974177

Description:
INSERT,SCREW THREAD

Detail:
A cylindrical item which may have wrenching and/or driving facilities and/or shoulders. It is designed to be inserted in a drilled or a pretapped hole, or molded or pressed into soft material to reduce the size of a tapped hole; to provide threads; to add strength, and/or to prevent stripping. It is one of the following: (1) a one-piece, flanged or unflanged, internally threaded item which may have external threads, and/or serrations around the periphery of the collar, designed to engage a serrated lock ring which is not included with the item; (2) a one-piece precision coiled wire; (3) a two-piece item consisting of an internally threaded cylinder and a mating externally threaded part; or (4) a one-piece internally threaded item whose outside diameter is tapered and/or knurled and/or with fin(s). The internal thread of the item may have a locking feature. Excludes items having a sleeve on its underportion which can be clinched or crimped. Excludes BUSHING, MACHINE THREAD; NUT, PLAIN, KNURLED; NUT, PLAIN, ROUND; NUT, PLAIN, CLINCH and NUT, SELF-LOCKING, CLINCH. See also NUT, PLAIN, PLATE.


Manufacturer Information:
MS51830CA202L1E0F1ROLLS ROYCE CORP


Techincal Specification:
CRITICALITY CODE JUSTIFICATIONAGAV
FEATURES PROVIDEDINDIVIDUALLY KEYED
FULL INTERNAL THREAD LENGTH0.295 INCHES MINIMUM AND 0.315 INCHES MAXIMUM
INSERT SIZE0.375-16 UNC 2A
INTERNAL THREAD RELIEF DEPTH0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
LENGTH0.375 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
NOMINAL THREAD SIZE0.250 INCHES
STYLE DESIGNATORKEYLOCK
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.375 INCHES NOMINAL
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28


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