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National Stock Number:
5305-01-624-3072
Federal Supply Class:
5305
National Item Identification Number:
016243072
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:
| NAS7803D9 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.1900 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.323 INCHES NOMINAL | | FASTENER LENGTH | 0.870 INCHES MINIMUM AND | | 0.900 INCHES MAXIMUM | | MATERIAL | IRON ALLOY 660 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731,AMS5732,AMS5737 OR AMS5853 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | PAN | | HEAD DIAMETER | 0.1845 INCHES MINIMUM AND | | 0.1859 INCHES MAXIMUM | | HEAD HEIGHT | 0.122 INCHES MINIMUM AND | | 0.133 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | GRIP LENGTH | 0.552 INCHES MINIMUM AND | | 0.572 INCHES MAXIMUM | | GRIP DIAMETER | 0.357 INCHES MINIMUM AND | | 0.373 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.721 INCHES NOMINAL ALL HOLES | | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM AND | | 0.075 INCHES MAXIMUM ALL HOLES | | SPECIFICATION/STANDARD DATA | 80205-NAS7800 THRU 7806 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT,PAN HEAD,CLOSE TOLERANCE,SHORT THREAD,CRUCIFORM RECESS,A286 CRES,SELF-LOCKING AND NONLOCKING |
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