5310-00-811-8819 WASHER,FLAT Index 5305-00-811-8823 SCREW,MACHINE

National Stock Number:
5306-00-811-8820

Federal Supply Class:
5306

National Item Identification Number:
008118820

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:
MS9033-0596906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
EXTENDED WASHER DIAMETER0.375 INCHES NOMINAL
EXTENDED WASHER THICKNESS0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
FASTENER LENGTH0.438 INCHES NOMINAL
FEATURES PROVIDEDFINISHED HEAD
HARDNESS RATING248.0 BRINELL STANDARD MINIMUM AND 341.0 BRINELL STANDARD MAXIMUM OVERALL
HEAD HEIGHT0.260 INCHES NOMINAL
HEAD STYLEDOUBLE HEXAGON W/HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH130000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH85000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.190 INCHES
NONSTANDARD THREAD PITCH DIAMETER+0.1644 TO 0.1667 INCHES
WIDTH BETWEEN FLATS0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH63.0 MICROINCHES GRIP
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.376 INCHES MINIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH32


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