5306-01-041-9628 BOLT,CLOSE TOLERANCE Index 5305-01-041-9631 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-041-9629

Federal Supply Class:
5305

National Item Identification Number:
010419629

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:
BACB30LH3-706710VALLEY-TODECO, INC.
BACB30LH3-706725SPS TECHNOLOGIES, LLC
BACB30LH3-706950HOWMET GLOBAL FASTENING SYSTEMS INC
BACB30LH3-717446HUCK INTERNATIONAL, INC
BACB30LH3-717943FEDERAL MANUFACTURING CORP
BACB30LH3-727624SPS TECHNOLOGIES LLC
BACB30LH3-756878SPS TECHNOLOGIES, LLC
BACB30LH3-780539SPS TECHNOLOGIES, LLC
BACB30LH3-781205THE BOEING COMPANY
BACB30LH3-792215HOWMET GLOBAL FASTENING SYSTEMS INC
BACB30LH3-797928HUCK INTL INC
BACB30LH3-79N513VOI-SHAN/CHATSWORTH DIV OF VSI CORP SUB OF FAIRCHILD INDUSTRIES INC
BACB30LH3-7Z03F0BOEING DEFENCE AUSTRALIA LTD
BACB30LH3-7Z8T75BOEING DEFENCE AUSTRALIA LTD


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH0.768 INCHES MINIMUM AND 0.798 INCHES MAXIMUM
GRIP DIAMETER0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
GRIP LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
HEAD DIAMETER0.337 INCHES MINIMUM AND 0.383 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES
SPECIFICATION/STANDARD DATA81205-BACS12LH PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.320 INCHES MINIMUM AND 0.370 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH32


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