5305-14-365-3701 SCREW,CLOSE TOLERANCE Index 5305-14-365-3709 SCREW,MACHINE

National Stock Number:
5305-14-365-3703

Federal Supply Class:
5305

National Item Identification Number:
143653703

Description:
SCREW,CLOSE TOLERANCE

Detail:
A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.


Manufacturer Information:
22252BC060026LF0111BUREAU NORMALISATION AERONAUTIQUEESPACE
22252BC060026LF0188BLANC AERO INDUSTRIES - GROUPE LISIAEROSPACE
22252BC060026LF0236SAINT CHAMOND GRANAT SA
22252BC060026LF0434ALIGN AEROSPACE FRANCE SAS
22252BC060026LF4871LEFEBVRE STE DES ANCIENS ETS PAUL SA
L22252-60-26BCLF0111BUREAU NORMALISATION AERONAUTIQUEESPACE


Techincal Specification:
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
EXTERNAL THREAD TOLERANCE CLASS4H
FASTENER LENGTH35.5 MILLIMETERS NOMINAL
GRIP DIAMETER5.978 MILLIMETERS MINIMUM AND 5.990 MILLIMETERS MAXIMUM
GRIP LENGTH26.0 MILLIMETERS NOMINAL
HEAD DIAMETER12.0 MILLIMETERS NOMINAL
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATIONF3025 AIR 9160C MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 35NC6 OVERALL
MINIMUM TENSILE STRENGTH880 MEGAPASCALS
MINIMUM YIELD STRENGTH740 MEGAPASCALS
NOMINAL THREAD DIAMETER6.0 MILLIMETERS
SURFACE FINISH0.8 MICROMETERS BEARING SURFACE OF HEAD
SURFACE FINISH0.8 MICROMETERS GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNF L 09-753 CODE L NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL AND CHROMATE OVERALL
TEST DATA DOCUMENTF3025-AIR 9173 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH9.5 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATORISO M
THREAD PITCH IN MILLIMETERS1.0


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