6685-01-320-6388 GAGE,PRESSURE,DIAL INDICATING Index 5306-01-320-6391 BOLT,SHOULDER

National Stock Number:
5306-01-320-6390

Federal Supply Class:
5306

National Item Identification Number:
013206390

Description:
BOLT,MACHINE

Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.


Manufacturer Information:
5306PL14992579009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
ST1420-1477445RTX CORPORATION


Techincal Specification:
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.125 INCHES NOMINAL
FASTENER LENGTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM
GRIP LENGTH0.750 INCHES MINIMUM AND 0.881 INCHES MAXIMUM
HEAD HEIGHT0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
HEAD STYLEDOUBLE HEXAGON W/HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 7477 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIAL FEATURESCENTER HOLE IN HEAD 0.140/0.160 IN. DIA;GRIP AREA 0.222/0.232 IN. DIA
WIDTH BETWEEN FLATS0.3125 INCHES NOMINAL
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH32.0 MICROINCHES GRIP
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.750 INCHES MINIMUM AND 0.881 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH28


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