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National Stock Number:
5305-01-380-7092
Federal Supply Class:
5305
National Item Identification Number:
013807092
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:
| 123545V4-5 | 80539 | SPS TECHNOLOGIES, LLC | | 4080-70016V4-5 | 14170 | HUGHES MISSILE SYSTEMS CO SAN DIEGO | | AIC3339V4-5 | 06725 | SPS TECHNOLOGIES, LLC | | 4080-70016V4-5 | 15090 | RAYTHEON COMPANY | | M963V4-5 | 17446 | HUCK INTERNATIONAL, INC | | M963V4-5 | 97928 | HUCK INTL INC | | SC1797V4-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | SC1797V4-5 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| CRITICALITY CODE JUSTIFICATION | ANEE AND AAUR | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.715 INCHES NOMINAL | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | HEAD DIAMETER | 0.4640 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HEXAGON | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | WIDTH ACROSS FLATS | 0.1562 INCHES MINIMUM AND 0.1580 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.403 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
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