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		                        | National Stock Number:
 5305-00-959-6989
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 009596989
 
 Description:
 SCREW,CAP,SOCKET HEAD
 
 Detail:
 An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
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 Manufacturer Information:
 
 | FFS86 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |  | KS812-616-39 | 56878 | SPS TECHNOLOGIES, LLC | 
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 Techincal Specification:
 
 | THREAD SERIES DESIGNATOR | UNC |  | NOMINAL THREAD DIAMETER | 0.375 INCHES |  | THREAD QUANTITY PER INCH | 16 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 1.250 INCHES MINIMUM |  | FASTENER LENGTH | 2.438 INCHES NOMINAL |  | MATERIAL | STEEL COMP 302 OR |  |  | STEEL COMP 303 OR |  |  | STEEL COMP 304 OR |  |  | STEEL COMP 305 OR |  |  | STEEL COMP 316 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | MINIMUM YIELD STRENGTH | 80000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT CHAMFER |  | HEAD DIAMETER | 0.550 INCHES MINIMUM AND |  |  | 0.562 INCHES MAXIMUM |  | HEAD HEIGHT | 0.368 INCHES MINIMUM AND |  |  | 0.375 INCHES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.312 INCHES NOMINAL |  | NONDEFINITIVE SPEC/STD DATA | 6 TYPE |  | DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY METALLIC HARDNESS RATING AND MINIMUMYIELD STRENGTH |  | SPEC/STD CONTROLLING DATA |  |  | MANUFACTURERS CODE | 81348 |  | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FFS86 | 
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