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National Stock Number:
5305-01-492-6411
Federal Supply Class:
5305
National Item Identification Number:
014926411
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:
| 11825C4-12A | 59563 | REID PRODUCTS INC. | | 3M1170C4-12A | 007R1 | TWIST TITE MFG, INC | | TX1027C4-12A | 06725 | SPS TECHNOLOGIES, LLC | | 3M1170C4-12A | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | GS1014C412A | 1EM77 | B & B SPECIALTIES INC | | 3M1170C4-12A | 76301 | THE BOEING COMPANY | | TX1027C4-12A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | TX1027C4-12A | 27624 | SPS TECHNOLOGIES LLC | | TX1027C4-12A | 56878 | SPS TECHNOLOGIES, LLC | | TX1027C4-12A | 73197 | HI-SHEAR CORPORATION | | TX1027C4-12A | 80539 | SPS TECHNOLOGIES, LLC | | TX1027C4-12A | 93907 | TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS | | TX1027C4-12A | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | TX1027C4-12A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 1.160 INCHES MINIMUM AND 1.190 INCHES MAXIMUM | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 1.437 INCHES NOMINAL | | HEAD DIAMETER | 0.358 INCHES MINIMUM AND 0.365 INCHES MAXIMUM | | HEAD HEIGHT | 0.060 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE IA | | PART NAME ASSIGNED BY CONTROLLING AGENCY | INAVY BOLT,GEAR DRIVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MDA23-118,CAGE76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY OVERALL | | NOMINAL THREAD DIAMETER | 0.249 INCHES | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.425 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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