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National Stock Number:
5305-00-324-9249
Federal Supply Class:
5305
National Item Identification Number:
003249249
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:
| 10125186 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 11905-3L4 | 59563 | REID PRODUCTS INC. | | CHT4025-3-4 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | CHT4025-3-4 | 17419 | DEUTSCH CO THE | | CHT4025-3-4 | 80539 | SPS TECHNOLOGIES, LLC | | CHT4025-3-4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4025L3-4 | 06725 | SPS TECHNOLOGIES, LLC | | HT4025L3-4 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4025L3-4 | 17446 | HUCK INTERNATIONAL, INC | | HT4025L3-4 | 27624 | SPS TECHNOLOGIES LLC | | HT4025L3-4 | 50392 | SPS TECHNOLOGIES INC | | HT4025L3-4 | 56878 | SPS TECHNOLOGIES, LLC | | HT4025L3-4 | 73197 | HI-SHEAR CORPORATION | | HT4025L3-4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M454-3L4 | 007R1 | TWIST TITE MFG, INC | | ST3M454-3L4 | 06710 | VALLEY-TODECO, INC. | | ST3M454-3L4 | 0PTK6 | SPS TECHNOLOGIES INC | | ST3M454-3L4 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | ST3M454-3L4 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M454-3L4 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M454-3L4 | 60516 | WEST COAST AEROSPACE, INC. | | WC4025L3-4 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M454-3L4 | 73197 | HI-SHEAR CORPORATION | | ST3M454-3L4 | 76301 | THE BOEING COMPANY | | ST3M454-3L4 | 80539 | SPS TECHNOLOGIES, LLC | | HT4025L3-4 | 97928 | HUCK INTL INC | | ST3M454-3L4 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | ST3M454-3L4 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | HT4025L3-4 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.641 INCHES MINIMUM AND 0.671 INCHES MAXIMUM | | GRIP DIAMETER | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | | HEAD DIAMETER | 0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 32 |
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