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National Stock Number:
5305-01-568-1941
Federal Supply Class:
5305
National Item Identification Number:
015681941
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:
| NAS1131V3C | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| FASTENER LENGTH | 0.186 INCHES NOMINAL | | GRIP DIAMETER | 0.242 INCHES MINIMUM | | GRIP LENGTH | 0.186 INCHES NOMINAL | | HEAD DIAMETER | 0.270 INCHES MAXIMUM | | HEAD HEIGHT | 0.097 INCHES MAXIMUM | | HEAD STYLE | PAN | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL | TITANIUM OVERALL | | MINIMUM TENSILE STRENGTH | 1450 POUNDS PER SQUARE INCH | | POINT DIAMETER | 0.137 INCHES MAXIMUM | | POINT STYLE | FLAT | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJC | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.462 INCHES NOMINAL |
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