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		                        | National Stock Number:
 5305-01-663-7578
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 016637578
 
 Description:
 SCREW,CLOSE TOLERANCE
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 Manufacturer Information:
 
 | NAS1581V4R12X | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | 
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 Techincal Specification:
 
 | THREAD SERIES DESIGNATOR | UNJF |  | NOMINAL THREAD DIAMETER | 0.250 INCHES |  | THREAD QUANTITY PER INCH | 28 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.332 INCHES MINIMUM AND |  |  | 0.403 INCHES MAXIMUM |  | FASTENER LENGTH | 1.143 INCHES MINIMUM AND |  |  | 1.163 INCHES MAXIMUM |  | MATERIAL | TITANIUM ALLOY OVERALL |  | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT COUNTERSUNK |  | HEAD DIAMETER | 0.350 INCHES MINIMUM AND |  |  | 0.399 INCHES MAXIMUM |  | HEAD HEIGHT | 0.057 INCHES NOMINAL |  | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |  |  | 101.0 DEGREES MAXIMUM |  | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |  | GRIP LENGTH | 0.740 INCHES MINIMUM AND |  |  | 0.760 INCHES MAXIMUM |  | GRIP DIAMETER | 0.264 INCHES MINIMUM AND |  |  | 0.265 INCHES MAXIMUM |  | SPECIAL FEATURES | INTERNAL DRIVE RIBBED |  | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, 100 DEGREE FLUSH REDUCED HEAD | 
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