4920-00-255-0107 FIXTURE,AIRCRAFT MAINTENANCE Index 5310-00-255-0110 WASHER,BEVEL

National Stock Number:
5310-00-255-0108

Federal Supply Class:
5310

National Item Identification Number:
002550108

Description:
NUT,PLAIN,CASTELLATED,HEXAGON

Detail:
A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes NUT (1), PLAIN, SLOTTED, HEXAGON.


Manufacturer Information:
AN12156081352AIR FORCE-NAVY AERONAUTICAL SPECIFICATIONS PROMULGATED BY AERONAUTICAL STANDARDS GROUP


Techincal Specification:
BEARING SURFACE FINISH63.0 MICROINCHES
BEARING SURFACE TYPEWASHER FACED
COUNTERSINK ANGLE90.0 DEGREES NOMINAL NUT
HARDNESS RATING19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8740 OVERALL
NOMINAL THREAD SIZE0.875 INCHES
NUT STYLECASTELLATED, HEXAGON
NUT HEIGHT0.906 INCHES NOMINAL
WIDTH ACROSS FLATS1.239 INCHES MINIMUM AND 1.252 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNF
THREAD QUANTITY PER INCH14


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