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National Stock Number:
5305-01-380-0777
Federal Supply Class:
5305
National Item Identification Number:
013800777
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:
| 03A161-4-6A | 1W025 | NORTHROP GRUMMAN SYSTEMS CORP | | 03A161-4-6A | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | AIC4410-4-6A | 06725 | SPS TECHNOLOGIES, LLC | | HR242-4-6A | 73197 | HI-SHEAR CORPORATION | | 123741-4-6A | 80539 | SPS TECHNOLOGIES, LLC | | HR242-4-6A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | VCL0008-4-6A | 06710 | VALLEY-TODECO, INC. | | SLB217-4-6A | 16258 | SPACE-LOK, INC. | | X007-4-6A | 17446 | HUCK INTERNATIONAL, INC | | PBF1419-4-6A | 27624 | SPS TECHNOLOGIES LLC | | X007-4-6A | 97928 | HUCK INTL INC |
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Techincal Specification:
| 0.507 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | GRIP LENGTH | 0.365 INCHES MINIMUM AND | | 0.385 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.425 INCHES NOMINAL | | FASTENER LENGTH | 0.785 INCHES MINIMUM AND | | 0.815 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY 718 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.449 INCHES MINIMUM AND |
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