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National Stock Number:
5305-01-483-6893
Federal Supply Class:
5305
National Item Identification Number:
014836893
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:
| 123179A3R12 | 80539 | SPS TECHNOLOGIES, LLC | | AIC4040-3-12R | 06725 | SPS TECHNOLOGIES, LLC | | LE111-0035-2312 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | LE111-0035-2312 | 27624 | SPS TECHNOLOGIES LLC | | LE111-0035-2312 | 43999 | THE BOEING COMPANY | | LE111-0035-2312 | 80539 | SPS TECHNOLOGIES, LLC | | PBF1381-2312 | 27624 | SPS TECHNOLOGIES LLC | | SC1786R-3-12 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.088 INCHES MINIMUM AND 1.103 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.750 INCHES NOMINAL | | HEAD STYLE | OVAL COUNTERSUNK | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL DOCUMENT AND CLASSIFICATION | NAS 498 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.1900 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPEII, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.338 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 32 |
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