4720-00-891-6494 HOSE,AIR DUCT Index 4720-00-891-6499 HOSE,NONMETALLIC

National Stock Number:
5310-00-891-6498

Federal Supply Class:
5310

National Item Identification Number:
008916498

Description:
NUT,PLAIN,EXTENDED WASHER,HEXAGO

Detail:
A NUT HAVING 6 FLAT SIDES AND AN INTEGRAL WASHER WHICH EXTENDS BEYOND THE FLATS OR PERIPHERY.


Manufacturer Information:
301267900198PRATT & WHITNEY CANADA CORP
H29691-415653HOWMET GLOBAL FASTENING SYSTEMS INC
H29691-475237HOWMET GLOBAL FASTENING SYSTEMS INC.


Techincal Specification:
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
OVERALL HEIGHT0.328 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5085 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6370 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.250 INCHES
NUT STYLEHEXAGON
WASHER OUTSIDE DIAMETER0.440 INCHES MAXIMUM
WASHER THICKNESS0.050 INCHES NOMINAL
WIDTH ACROSS FLATS0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH28
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)


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