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
WIDTH ACROSS FLATS2.995 INCHES MINIMUM AND 3.005 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUN
THREAD QUANTITY PER INCH16


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