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National Stock Number:
5305-01-188-9641
Federal Supply Class:
5305
National Item Identification Number:
011889641
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:
| 10319877 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 11923-3-2 | 59563 | REID PRODUCTS INC. | | HT4027-3-2 | 06725 | SPS TECHNOLOGIES, LLC | | HT4027-3-2 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4027-3-2 | 17446 | HUCK INTERNATIONAL, INC | | 3929AS1227-3R2 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER | | ST3M557-3-2 | 007R1 | TWIST TITE MFG, INC | | HT4027-3-2 | 27624 | SPS TECHNOLOGIES LLC | | HT4027-3-2 | 56878 | SPS TECHNOLOGIES, LLC | | HT4027-3-2 | 73197 | HI-SHEAR CORPORATION | | HT4027-3-2 | 80539 | SPS TECHNOLOGIES, LLC | | HT4027-3-2 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4027-3-2 | 97928 | HUCK INTL INC | | HT4027-3-2 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M557-3-2 | 06710 | VALLEY-TODECO, INC. | | ST3M557-3-2 | 0K6Z0 | SATURN FASTENERS INC | | ST3M557-3-2 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | ST3M557-3-2 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M557-3-2 | 4WL75 | CAMCAR LLC DIV CAMCAR LLC | | ST3M557-3-2 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M557-3-2 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | WC4027-3-2 | 60516 | WEST COAST AEROSPACE, INC. | | WC4027-3-22 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M557-3-2 | 76301 | THE BOEING COMPANY | | ST3M557-3-2 | U6683 | LINREAD LTD DBA LINREAD NORTHBRIDGE |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.515 INCHES MINIMUM AND 0.562 INCHES MAXIMUM | | GRIP LENGTH | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM | | GRIP DIAMETER | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | HEAD DIAMETER | 0.297 INCHES MINIMUM AND 0.302 INCHES MAXIMUM | | HEAD STYLE | OVAL COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-118,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD LENGTH | 0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJF |
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