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National Stock Number:
5305-00-929-9212
Federal Supply Class:
5305
National Item Identification Number:
009299212
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:
| 7823864-1-06-25 | 34087 | KITCO LLC | | 7823864-1-06-25 | 84256 | AVIBANK MFG., INC. | | 7823864-1-06-25 | 88277 | THE BOEING COMPANY | | 7823864-1-06-25 | 8X044 | DERCO AEROSPACE, INC. | | 7823864-1-06-25 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.790 INCHES MINIMUM AND 1.837 INCHES MAXIMUM SECOND HOLE | | FASTENER LENGTH | 1.921 INCHES MINIMUM AND 1.948 INCHES MAXIMUM | | GRIP DIAMETER | 0.3733 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM | | GRIP LENGTH | 1.562 INCHES MINIMUM AND 1.582 INCHES MAXIMUM | | HEAD HEIGHT | 0.194 INCHES MINIMUM AND 0.204 INCHES MAXIMUM | | HEAD STYLE | CROWNED HEXAGON | | INTERNAL DRIVE STYLE | SLOT | | LOCKING FEATURE | DETENT BALL GRIP | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM SECOND HOLE | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | FS251,FSCM 8827 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SPECIAL FEATURES | TWO SPRING LOADED BALLS IN SHANK AS SELF RETAINING FEATURE | | THREAD CLASS | 3A | | THREAD LENGTH | 0.339 INCHES MINIMUM AND 0.386 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNF | | WIDTH BETWEEN FLATS | 0.554 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |
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