5305-01-236-6188 SCREW,CAP,SOCKET HEAD Index 5306-01-236-6190 BOLT,CLOSE TOLERANCE

National Stock Number:
5305-01-236-6189

Federal Supply Class:
5305

National Item Identification Number:
012366189

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.


Manufacturer Information:
103-4645417 ITEM 3-480064NAVAL SHIP SYSTEMS COMMAND
4645417 ITEM 3-480064NAVAL SHIP SYSTEMS COMMAND
60-16-550396169ELECTRIC BOAT CORPORATION


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER1.250 INCHES
THREAD QUANTITY PER INCH12
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH3.332 INCHES MINIMUM AND
3.500 INCHES MAXIMUM
FASTENER LENGTH3.500 INCHES NOMINAL
MATERIALSTEEL OVERALL
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH170000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH150000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER1.852 INCHES MINIMUM AND
1.875 INCHES MAXIMUM
HEAD HEIGHT1.236 INCHES MINIMUM AND
1.250 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.875 INCHES NOMINAL
HOLE CONFIGURATION STYLEROUND INTERNAL HEXAGON
HOLE TYPEDRILLED
HOLE QUANTITY6
HOLE DIAMETER1.312 INCHES NOMINAL


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