5306-01-135-3538 BOLT,CLOSE TOLERANCE Index 5305-01-135-3540 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-135-3539

Federal Supply Class:
5305

National Item Identification Number:
011353539

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:
10115374A486GNIMIKKEISTOKESKUS NCB FINLAND
HT4054-3-5A06950HOWMET GLOBAL FASTENING SYSTEMS INC
HT4054-3-5A73197HI-SHEAR CORPORATION
HT4054-3-5A80539SPS TECHNOLOGIES, LLC
HT4054-3-5A92215HOWMET GLOBAL FASTENING SYSTEMS INC
HT4054-3-5A97928HUCK INTL INC
ST3M730-3L5007R1TWIST TITE MFG, INC
ST3M730-3L506950HOWMET GLOBAL FASTENING SYSTEMS INC
ST3M730-3L50PTK6SPS TECHNOLOGIES INC
ST3M730-3L517446HUCK INTERNATIONAL, INC
ST3M730-3L51VSL7HOUSTON PRECISION FASTENERS I LP
ST3M730-3L558998FASTENER INNOVATION TECHNOLOGY, INC.
ST3M730-3L560516WEST COAST AEROSPACE, INC.
ST3M730-3L573197HI-SHEAR CORPORATION
WC4054-35A60516WEST COAST AEROSPACE, INC.
ST3M730-3L576301THE BOEING COMPANY
ST3M730-3L580539SPS TECHNOLOGIES, LLC
ST3M730-3L5K5673SPS TECHNOLOGIES LTD TJ BROOKS DIVISION
ST3M730-3L5L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH0.635 INCHES MINIMUM AND 0.665 INCHES MAXIMUM
GRIP LENGTH0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM
GRIP DIAMETER0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.339 INCHES MINIMUM AND 0.381 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEHIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8740 OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.190 INCHES
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-83488 TYPE 2 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTALUMINUM AND CHROMATE OVERALL
THREAD CLASS3A
THREAD LENGTH0.313 INCHES MINIMUM AND 0.363 INCHES MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH32


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