4720-01-273-1429 HOSE,PREFORMED Index 4820-01-273-1434 VALVE,GATE

National Stock Number:
5310-01-273-1430

Federal Supply Class:
5310

National Item Identification Number:
012731430

Description:
NUT,SELF-LOCKING,CASTELLATED,HEX

Detail:
A NUT HAVING 6 FLAT SIDES, FLAT ON THE BOTTOM AND HAVING A SLOTTED CYLINDRICAL OR DOME SHAPED UPPER PORTION. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. THE SLOTS WHEN USED IN CONJUNCTION WITH A SOLID OR SPLIT (COTTER) PIN, ACT AS AN EXTRA "FAIL SAFE" FEATURE IN CRITICAL APPLICATIONS. EXCLUDES NUT (1), SELF-LOCKING, SLOTTED, HEXAGON.


Manufacturer Information:
A89909-1880020NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2


Techincal Specification:
THREAD SERIESUNC
NOMINAL THREAD SIZE1.000 INCHES
THREAD QUANTITY PER INCH8
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758,COND A1 MIL SPEC 1ST MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE II FED SPEC 1ST TREATMENT RESPONSE OVERALL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND
32.0 ROCKWELL C MAXIMUM
NUT STYLECASTELLATED, HEXAGON
NUT HEIGHT0.766 INCHES NOMINAL
WIDTH ACROSS FLATS1.500 INCHES NOMINAL
THE MANUFACTURERS DATA
MANUFACTURERS CODE80020
DESIGN CONTROL REFERENCEA89909-18


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