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National Stock Number:
5305-01-196-5579
Federal Supply Class:
5305
National Item Identification Number:
011965579
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:
| 10113519 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 110179-5-18AS | 56878 | SPS TECHNOLOGIES, LLC | | BM33024V5-18U | 17446 | HUCK INTERNATIONAL, INC | | 110179-5-18AS | 80539 | SPS TECHNOLOGIES, LLC | | BM33024V5-18U | 97928 | HUCK INTL INC | | 110179-5-18AS | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | ST3M430V5-18AS | 007R1 | TWIST TITE MFG, INC | | HT8137-5-18AS | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M430V5-18AS | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT271A5-18 | 73197 | HI-SHEAR CORPORATION | | ST3M430V5-18AS | 76301 | THE BOEING COMPANY | | ST3M430V5-18AS | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT8137-5-18AS | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT271A5-18 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | WC8137-5-18A | 60516 | WEST COAST AEROSPACE, INC. |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 1.640 INCHES MINIMUM AND 1.687 INCHES MAXIMUM | | GRIP LENGTH | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | HEAD HEIGHT | 0.0878 INCHES MINIMUM AND 0.0899 INCHES MAXIMUM | | HEAD DIAMETER | 0.6287 INCHES MINIMUM AND 0.6335 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | NAS 621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | TITANIUM ALLOY OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SPECIAL FEATURES | FURNISHED WITH ONE O-RING | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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