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National Stock Number:
5305-01-074-9048
Federal Supply Class:
5305
National Item Identification Number:
010749048
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:
| 66908H5-14 | 56878 | SPS TECHNOLOGIES, LLC | | 66908H5-14 | 80539 | SPS TECHNOLOGIES, LLC | | HS2623-5-14 | 17446 | HUCK INTERNATIONAL, INC | | HS2623-5-14 | 97928 | HUCK INTL INC | | HT307-5-14 | 73197 | HI-SHEAR CORPORATION | | HT307-5-14 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M559-5-14 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M559-5-14 | 70236 | TACTAIR FLUID CONTROLS INC | | ST3M559-5-14 | 76301 | THE BOEING COMPANY | | ST3M559-5-14 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 1.342 INCHES NOMINAL | | GRIP DIAMETER | 0.3266 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM | | GRIP LENGTH | 0.875 INCHES NOMINAL | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SINGLE SHEAR STRENGTH | 132000 POUNDS PER SQUARE INCH | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MAC PS-13145 FSCM 76301 MFR REF ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.467 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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