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		                        | National Stock Number:
 5305-01-667-6768
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 016676768
 
 Description:
 SCREW,MACHINE
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 Manufacturer Information:
 
 | BACS12HN4-8D | 81205 | THE BOEING COMPANY | 
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 Techincal Specification:
 
 | FASTENER LENGTH | 0.50 INCHES NOMINAL |  | HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |  | HEAD HOLE CONFIGURATION STYLE | HEXAGON CORNERS |  | HEAD STYLE | HEXAGON |  | HOLE DIAMETER | 0.046 INCHES NOMINAL |  | HOLE QUANTITY | 3 |  | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |  | III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,MACHINE |  | PROPRIETARY CHARACTERISTICS | PACS |  | NOMINAL THREAD DIAMETER | 0.250 INCHES |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | ITEM IS FAA CERTIFIED |  | SCREW MATERIAL | IRON ALLOY 660 |  | SCREW SURFACE TREATMENT | CHROMATE |  | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.437 INCHES MINIMUM AND 0.468 INCHES MAXIMUM |  | THREAD QUANTITY PER INCH | 28 |  | THREAD SERIES DESIGNATOR | UNJF | 
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