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National Stock Number:
5305-01-303-7407
Federal Supply Class:
5305
National Item Identification Number:
013037407
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:
| NAS1132E3P | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | NAS1132E3P | A0170 | LEONARDO SPA AEROSTRUCTURE DIVISION |
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Techincal Specification:
| FASTENER LENGTH | 0.449 INCHES MINIMUM AND 0.479 INCHES MAXIMUM | | GRIP DIAMETER | 0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM | | GRIP LENGTH | 0.187 INCHES NOMINAL | | HARDNESS RATING | 248.0 BRINELL STANDARD MINIMUM AND 321.0 BRINELL STANDARD MAXIMUM OVERALL | | HEAD DIAMETER | 0.289 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | HEAD HEIGHT | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM | | HEAD STYLE | PAN | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | IRON ALLOY 660 OVERALL | | MINIMUM TENSILE STRENGTH | 140000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | SPECIFICATION/STANDARD DATA | 80205-NAS1132 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 | CADMIUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.276 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNJC | | THREAD QUANTITY PER INCH | 32 |
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