5305-01-011-7987 SCREW,CLOSE TOLERANCE Index 5310-01-011-7989 NUT,PLAIN,CLINCH

National Stock Number:
5310-01-011-7988

Federal Supply Class:
5310

National Item Identification Number:
010117988

Description:
NUT,PLAIN,HEXAGON

Detail:
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness (or height) exceeding two times the width across the flats, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)


Manufacturer Information:
3/8-24NF-308547WALLACE R G CO DIV OF DUCOMMUN INC
860176-306481NORTHROP GRUMMAN SYSTEMS CORPORATION
860176-313973LITTON SYSTEMS INC. DIV NAVIGATION SYSTEMS DIVISION
FF-N-83681348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
AN316C6R81352AIR FORCE-NAVY AERONAUTICAL SPECIFICATIONS PROMULGATED BY AERONAUTICAL STANDARDS GROUP


Techincal Specification:
THREAD SERIESUNF
NOMINAL THREAD SIZE0.375 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL COMP 301 OR
STEEL COMP 302 OR
STEEL COMP 303 OR
STEEL COMP 303F OR
STEEL COMP 303S OR
STEEL COMP 303SE OR
STEEL COMP 304 OR
STEEL COMP 304L OR
STEEL COMP 305 OR
STEEL COMP 308 OR
STEEL COMP 309 OR
STEEL COMP 309S OR
STEEL COMP 310 OR
STEEL COMP 310S OR
STEEL COMP 314 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NUT STYLEHEXAGON
NUT HEIGHT0.188 INCHES NOMINAL
WIDTH ACROSS FLATS0.553 INCHES MINIMUM AND
0.565 INCHES MAXIMUM
BEARING SURFACE TYPECHAMFERED
COUNTERSINK ANGLE110.0 DEGREES NOMINAL NUT
NONDEFINITIVE SPEC/STD DATA2 TYPE
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY MATERIAL
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81352
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEAN316C6R
MANUFACTURERS CODE81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEFF-N-836


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