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National Stock Number:
5305-01-467-7474
Federal Supply Class:
5305
National Item Identification Number:
014677474
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:
| NAS2835C15DT | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.361 INCHES MINIMUM AND 1.391 INCHES MAXIMUM | | GRIP DIAMETER | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM | | HEAD DIAMETER | 0.490 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.3125 INCHES | | SPECIAL FEATURES | ITEM HAS DRILLED SHANK AT THE THREADED END, AND THE DISTANCE FROM END TO SHANK HOLE CENTER IS 0.172 INCH MIN., 0.192 INCH MAX; THE DIAMETER OF THE HOLE IS 0.076 INCH MIN., 0.086 INCH MAX. | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.438 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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