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National Stock Number:
5305-01-624-6016
Federal Supply Class:
5305
National Item Identification Number:
016246016
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:
| BACB30LU6D12Y | 06710 | VALLEY-TODECO, INC. | | BACB30LU6D12Y | 06725 | SPS TECHNOLOGIES, LLC | | BACB30LU6D12Y | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30LU6D12Y | 17943 | FEDERAL MANUFACTURING CORP | | BACB30LU6D12Y | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30LU6D12Y | 56878 | SPS TECHNOLOGIES, LLC | | BACB30LU6D12Y | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.313 INCHES MINIMUM AND 1.343 INCHES MAXIMUM | | GRIP DIAMETER | 0.4041 INCHES MINIMUM AND 0.4047 INCHES MAXIMUM | | GRIP LENGTH | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | HEAD DIAMETER | 0.691 INCHES MINIMUM AND 0.765 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE II | | MATERIAL | STEEL COMP 4340 OR STEEL COMP 8740 OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.578 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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