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National Stock Number:
5305-01-092-0088
Federal Supply Class:
5305
National Item Identification Number:
010920088
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:
| 5305PL0783191 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH | | 5305PL1943336 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH | | AIC985-3-4 | 06725 | SPS TECHNOLOGIES, LLC | | AIC985-3-4P | 06725 | SPS TECHNOLOGIES, LLC | | C7985-3-4 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | C7985-3-4 | 17448 | DEVINE MFG CO | | C7985-3-4 | 1V757 | WESCO AIRCRAFT HARDWARE CORP. | | C7985-3-4 | 27624 | SPS TECHNOLOGIES LLC | | C7985-3-4 | 56878 | SPS TECHNOLOGIES, LLC | | C7985-3-4 | 80539 | SPS TECHNOLOGIES, LLC | | C7985-3-4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.338 INCHES MINIMUM AND | | 0.388 INCHES MAXIMUM | | FASTENER LENGTH | 0.598 INCHES MINIMUM AND | | 0.628 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND | | 49.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.258 INCHES MINIMUM AND | | 0.305 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | GRIP LENGTH | 0.240 INCHES MINIMUM AND | | 0.260 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND | | 0.1895 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | 32.0 MICROINCHES THREADS |
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