5340-01-254-1470 SEAT,HELICAL COMPRESSION SPRING Index 1560-01-254-1472 COVER,ACCESS

National Stock Number:
5325-01-254-1471

Federal Supply Class:
5325

National Item Identification Number:
012541471

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:
514527-637695RAYTHEON COMPANY


Techincal Specification:
FLANGE DIAMETER0.250 INCHES NOMINAL
FLANGE THICKNESS0.014 INCHES MINIMUM AND 0.022 INCHES MAXIMUM
INSERT SIZE0.197 IN. MIN AND 0.201 IN. MAX DIA
LENGTH0.434 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD SIZE0.112 INCHES
STYLE DESIGNATORFLANGE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 4 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2B
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH40


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