5310-00-577-5354 WASHER,LOCK Index 5305-00-577-5356 SCREW,MACHINE

National Stock Number:
5310-00-577-5355

Federal Supply Class:
5310

National Item Identification Number:
005775355

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:
908960518876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
BEARING SURFACE FINISH125.0 MICROINCHES
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
COUNTERSINK ANGLE89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM NUT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 7075 OVERALL
NOMINAL THREAD SIZE2.625 INCHES
NUT HEIGHT0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM
NUT STYLEHEXAGON
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH16
THREAD SERIESUN
WIDTH ACROSS FLATS2.995 INCHES MINIMUM AND 3.005 INCHES MAXIMUM


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