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National Stock Number:
5305-00-146-7189
Federal Supply Class:
5305
National Item Identification Number:
001467189
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.
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Manufacturer Information:
| 64040V5-8 | 56878 | SPS TECHNOLOGIES, LLC | | 64040V5-8 | 80539 | SPS TECHNOLOGIES, LLC | | AIC1023V5-8 | 06725 | SPS TECHNOLOGIES, LLC | | C387V5-8 | 06725 | SPS TECHNOLOGIES, LLC | | C387V5-8 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | C387V5-8 | 56878 | SPS TECHNOLOGIES, LLC | | C387V5-8 | 73197 | HI-SHEAR CORPORATION | | C387V5-8 | 81755 | LOCKHEED MARTIN CORPORATION | | C387V5-8 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | C387V5-8 | 93907 | TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS | | C387V5-8 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | CS318642V5-8 | 93907 | TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS | | HR101V-5-8 | 73197 | HI-SHEAR CORPORATION | | VT1039V5-8 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 59.75 DEGREES MINIMUM AND 60.25 DEGREES MAXIMUM | | FASTENER LENGTH | 0.933 INCHES MINIMUM AND 0.963 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | HEAD DIAMETER | 0.531 INCHES MINIMUM AND 0.558 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL DOCUMENT AND CLASSIFICATION | NAS621,COMP 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | TITANIUM ALLOY UNS R54520 OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SPECIAL FEATURES | BEARING SURFACE OF HEAD GROOVED TO 0.394 IN. MIN 0.396 IN. MAX DIA,0.092 IN. MIN 0.097 IN. MAX LG FROM TOP OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.423 INCHES MINIMUM AND 0.473 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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