5305-01-320-1055 SCREW,SHOULDER Index 5310-01-320-1057 NUT,SLEEVE

National Stock Number:
5310-01-320-1056

Federal Supply Class:
5310

National Item Identification Number:
013201056

Description:
NUT,SELF-LOCKING,EXTENDED WASHER

Detail:
A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.


Manufacturer Information:
03A153-4L1W025NORTHROP GRUMMAN SYSTEMS CORP
03A153-4L76823NORTHROP GRUMMAN SYSTEMS CORPORATION
H52766-415653HOWMET GLOBAL FASTENING SYSTEMS INC
BH1291C-4MFA27238BRISTOL INDUSTRIES, LLC
NRH30C-4M52828REPUBLIC FASTENER MFG. CORP.
83963-4L56878SPS TECHNOLOGIES, LLC
VN324DH04892215HOWMET GLOBAL FASTENING SYSTEMS INC


Techincal Specification:
THREAD SERIESUNJF
NOMINAL THREAD SIZE0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALIRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR
AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NUT STYLEHEXAGON
WASHER OUTSIDE DIAMETER0.420 INCHES MAXIMUM
OVERALL HEIGHT0.219 INCHES MAXIMUM
WASHER THICKNESS0.019 INCHES MINIMUM
WIDTH ACROSS FLATS0.305 INCHES MINIMUM AND
0.316 INCHES MAXIMUM
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
LUBRICATIONDRY FILM LUBRICANT


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