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National Stock Number:
5305-00-558-2976
Federal Supply Class:
5305
National Item Identification Number:
005582976
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:
| NAS336-24 | 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 | 2.563 INCHES MINIMUM AND 2.610 INCHES MAXIMUM | | GRIP DIAMETER | 0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM | | GRIP LENGTH | 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM | | HEAD DIAMETER | 0.752 INCHES MINIMUM AND 0.762 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HEXAGON | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE | | SPECIFICATION/STANDARD DATA | 80205-NAS336 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.615 INCHES MINIMUM AND 0.682 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNF |
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