5306-01-098-9940 BOLT,INTERNAL WRENCHING Index 5305-01-098-9942 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-098-9941

Federal Supply Class:
5305

National Item Identification Number:
010989941

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:
11454937-618876U S ARMY AVIATION AND MISSILE COMMAND
79078-4-5256876ALTA PRODUCTS CO INC
D16161-100HDW7HUCK INTERNATIONAL, INC.
FF-S-8681348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
D16161-1097928HUCK INTL INC


Techincal Specification:
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY SURFACE FINISH
FASTENER LENGTH3.230 INCHES MINIMUM AND 3.270 INCHES MAXIMUM
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL OVERALL
MINIMUM YIELD STRENGTH150000 POUNDS PER SQUARE INCH
MINIMUM TENSILE STRENGTH170000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.250 INCHES
NONDEFINITIVE SPEC/STD DATA6 TYPE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-26074,CL 1 GR B MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTNICKEL OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.000 INCHES MINIMUM
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNRF
WIDTH ACROSS FLATS0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM


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