5310-00-111-7549 WASHER,FLAT Index 3130-00-111-7554 HOUSING,BEARING UNIT

National Stock Number:
5305-00-111-7551

Federal Supply Class:
5305

National Item Identification Number:
001117551

Description:
SCREW ASSEMBLY,PANEL

Detail:
A HEADED, THREADED FASTENING DEVICE OVER WHICH MAY BE ASSEMBLED; (1) A STAND-OFF; (2) A FLANGED BUSHING WITH WASHER(S) AND/OR A SHOULDERED BUSHING WITHOUT A FLANGE, OR IT MAY HAVE AN INTERNALLY THREADED SLEEVE THAT IS AN INTEGRAL PART OF THE SCREW; A WASHER AND AN EXTERNALLY THREAD SELF-LOCKING BUSHING THAT IS DRIVEN BY AN INSERTED DRIVER. ATTACHED TO PANEL BY THREADED BUSHING OR BY FLARING END OF STAND-OFF, OR BUSHING. USED IN CONJUNCTION WITH A SPEED NUT, NUT PLATE, OR DRIVEN INTO A THREADED HOLE IN THE ITEM THAT THE PANEL IS FASTENED TO. MAY BE SPRING LOADED.


Manufacturer Information:
0N057142-198230NATIONAL SECURITY AGENCY
53-14-210-2494222SOUTHCO INC
990C899H0318323NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
FASTENER LENGTH1.000 INCHES NOMINAL
HEAD DIAMETER0.750 INCHES NOMINAL
HEAD HEIGHT0.250 INCHES NOMINAL
HEAD STYLEFLAT CHAMFER
MATERIAL ACCOMMODATED THICKNESS0.094 INCHES MINIMUM AND 0.203 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING FASTENER
MATERIALSTEEL CORROSION RESISTING SPRING
MATERIALSTEEL CORROSION RESISTING STAND-OFF
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIAL FEATURESHEAD VERTICALLY KNURLED
SURFACE TREATMENTPASSIVATE FASTENER
SURFACE TREATMENTPASSIVATE STAND-OFF
SURFACE TREATMENTPASSIVATE SPRING
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.375 INCHES NOMINAL
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28


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