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National Stock Number: 5305-01-266-8565
Federal Supply Class: 5305
National Item Identification Number: 012668565
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:
MIL-DTL-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | MIL-S-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
FASTENER LENGTH | 2.190 INCHES MINIMUM AND 2.250 INCHES MAXIMUM | HARDNESS RATING | 37.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL | HEAD DIAMETER | 0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM | HEAD HEIGHT | 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM | HEAD STYLE | FLAT CHAMFER | INTERNAL DRIVE STYLE | HEXAGON | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | MATERIAL | STEEL COMP 4340 OVERALL | MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH | NOMINAL THREAD DIAMETER | 0.625 INCHES | NONDEFINITIVE SPEC/STD DATA | 2 TYPE | WIDTH ACROSS FLATS | 0.500 INCHES NOMINAL | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 2.008 INCHES MINIMUM AND 2.250 INCHES MAXIMUM | THREAD QUANTITY PER INCH | 11 | THREAD SERIES DESIGNATOR | UNC |
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