5305-00-027-7268 SCREW,MACHINE Index 5305-00-027-7275 SCREW,MACHINE

National Stock Number:
5305-00-027-7270

Federal Supply Class:
5305

National Item Identification Number:
000277270

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:
BACB30EF4-381205THE BOEING COMPANY
BACB30LU4P306710VALLEY-TODECO, INC.
BACB30LU4P306725SPS TECHNOLOGIES, LLC
BACB30LU4P306950HOWMET GLOBAL FASTENING SYSTEMS INC
BACB30LU4P317943FEDERAL MANUFACTURING CORP
BACB30LU4P327624SPS TECHNOLOGIES LLC
BACB30LU4P357928SONIC INDUSTRIES, INC.
BACB30LU4P373197HI-SHEAR CORPORATION
BACB30LU4P380539SPS TECHNOLOGIES, LLC
BACB30LU4P381205THE BOEING COMPANY
BACB30LU4P3L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH0.655 INCHES NOMINAL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.510 INCHES NOMINAL
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
LOCKING FEATUREPATCH OR PELLET OR STRIP THREADS
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIFICATION/STANDARD DATA81205-BACB30EF MANUFACTURERS STANDARD
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.468 INCHES MINIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28


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