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National Stock Number:
5305-01-038-1300
Federal Supply Class:
5305
National Item Identification Number:
010381300
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:
| NAS1131-4 | 04348 | LAWRENCE ENGINEERING AND SUPPLY INC | | NAS1131-4 | 07851 | NOR-CAL SUPPLY CO | | NAS1131-4 | 08938 | AIR INDUSTRIES CO INC | | NAS1131-4 | 17446 | HUCK INTERNATIONAL, INC | | NAS1131-4 | 30902 | F AND C SALES INC | | NAS1131-4 | 50568 | APCOM INC | | NAS1131-4 | 53606 | PLASTIC AND METAL PRODUCTS CORPORATION | | NAS1131-4 | 56878 | SPS TECHNOLOGIES, LLC | | NAS1131-4 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | NAS1131-4 | 73197 | HI-SHEAR CORPORATION | | NAS1131-4 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | NAS1131-4 | 80539 | SPS TECHNOLOGIES, LLC | | NAS1131-4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | NAS1131-4 | 97928 | HUCK INTL INC |
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Techincal Specification:
| FASTENER LENGTH | 0.526 INCHES NOMINAL | | GRIP LENGTH | 0.250 INCHES NOMINAL | | GRIP DIAMETER | 0.1365 INCHES MINIMUM AND 0.1375 INCHES MAXIMUM | | HEAD HEIGHT | 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM | | HEAD DIAMETER | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM | | HEAD STYLE | PAN | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | SPECIFICATION/STANDARD DATA | 80205-NAS1131 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | 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 | QQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.276 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJC |
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