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National Stock Number:
5305-01-286-3112
Federal Supply Class:
5305
National Item Identification Number:
012863112
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:
| 123179A3R16 | 80539 | SPS TECHNOLOGIES, LLC | | A175-2316 | 17446 | HUCK INTERNATIONAL, INC | | SC1786R-3-16 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | PBF1381-2316 | 27624 | SPS TECHNOLOGIES LLC | | LE111-0035-2316 | 43999 | THE BOEING COMPANY | | A175-2316 | 97928 | HUCK INTL 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 | 0.219 INCHES MINIMUM AND | | 0.357 INCHES MAXIMUM | | FASTENER LENGTH | 1.163 INCHES MINIMUM AND | | 1.297 INCHES MAXIMUM | | MATERIAL | STEEL COMP E4340 OR | | STEEL COMP 4140 OR | | STEEL COMP 8740 OR | | STEEL COMP 8735 OR | | STEEL COMP 6150 OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH | | HEAD STYLE | OVAL COUNTERSUNK | | HEAD DIAMETER | 0.297 INCHES MINIMUM AND | | 0.302 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | GRIP LENGTH | 0.940 INCHES MINIMUM AND | | 0.944 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND | | 0.1895 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | 32.0 MICROINCHES GRIP | | 32.0 MICROINCHES THREADS |
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