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National Stock Number:
5305-01-500-4638
Federal Supply Class:
5305
National Item Identification Number:
015004638
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:
| MS3369B310 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | SS5112-310 | 16258 | SPACE-LOK, INC. | | SS5112-310 | 73197 | HI-SHEAR CORPORATION | | SS5112-310 | 78286 | SIKORSKY AIRCRAFT CORPORATION | | SS5112-310 | 84256 | AVIBANK MFG., INC. | | SS5112-310 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | SS5112-310 78286 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| FASTENER LENGTH | 0.997 INCHES MINIMUM AND 1.017 INCHES MAXIMUM | | GRIP LENGTH | 0.625 INCHES MINIMUM AND 0.641 INCHES MAXIMUM | | GRIP DIAMETER | 0.1889 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM | | HEAD HEIGHT | 0.095 INCHES MINIMUM AND 0.110 INCHES MAXIMUM | | HEAD STYLE | CROWNED HEXAGON | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 630 OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SPECIAL FEATURES | ITEM IS SELF RETAINING POSITIVE LOCKING | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.372 INCHES MINIMUM AND 0.376 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 32 |
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