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National Stock Number:
5305-00-486-2192
Federal Supply Class:
5305
National Item Identification Number:
004862192
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:
| NAS1124-7H | 04348 | LAWRENCE ENGINEERING AND SUPPLY INC | | NAS1124-7H | 07851 | NOR-CAL SUPPLY CO | | NAS1124-7H | 08938 | AIR INDUSTRIES CO INC | | NAS1124-7H | 17446 | HUCK INTERNATIONAL, INC | | NAS1124-7H | 30485 | QUALIFIED AIR COMPONENTS INC. | | NAS1124-7H | 30902 | F AND C SALES INC | | NAS1124-7H | 50568 | APCOM INC | | NAS1124-7H | 53606 | PLASTIC AND METAL PRODUCTS CORPORATION | | NAS1124-7H | 56878 | SPS TECHNOLOGIES, LLC | | NAS1124-7H | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | NAS1124-7H | 73197 | HI-SHEAR CORPORATION | | NAS1124-7H | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | NAS1124-7H | 80539 | SPS TECHNOLOGIES, LLC | | NAS1124-7H | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | NAS1124-7H | 97928 | HUCK INTL INC |
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Techincal Specification:
| FASTENER LENGTH | 0.739 INCHES MINIMUM AND 0.769 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | HEAD HEIGHT | 0.133 INCHES MINIMUM AND 0.150 INCHES MAXIMUM | | HEAD STYLE | FILLISTER | | HOLE DIAMETER | 0.064 INCHES NOMINAL | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4037 OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2403 ASSN STD 1ST TREATMENT RESPONSE AND QQ-P-416,TY 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL AND CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD LENGTH | 0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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