5305-01-196-0226 SCREW,CAP,SOCKET HEAD Index 5305-01-196-0228 SCREW,SHOULDER

National Stock Number:
5305-01-196-0227

Federal Supply Class:
5305

National Item Identification Number:
011960227

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:
CA21070-4-12HS29372HOWMET GLOBAL FASTENING SYSTEMS INC.
GS520CK4-1226512NORTHROP GRUMMAN SYSTEMS CORPORATION
GS520CK4-1258998FASTENER INNOVATION TECHNOLOGY, INC.


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH1.467 INCHES MINIMUM AND 1.487 INCHES MAXIMUM
HEAD DIAMETER0.360 INCHES MINIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8740 OR STEEL COMP 4140 OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIAL FEATURES3 KEYWAYS 0.035 IN. MIN AND 0.045 IN. MAX WIDE,0.024 IN. MIN AND 0.034 IN. MAX DEEP MACHINED IN SHANK,BORE MACHINED IN THREAD END TO RECEIVE PLUG
WIDTH ACROSS FLATS0.141 INCHES MINIMUM AND 0.143 INCHES MAXIMUM
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.477 INCHES MINIMUM AND 0.636 INCHES MAXIMUM
THREAD QUANTITY PER INCH88
THREAD SERIES DESIGNATORUNF


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