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National Stock Number:
5305-01-345-5343
Federal Supply Class:
5305
National Item Identification Number:
013455343
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:
| 110179-5-9ASM | 80539 | SPS TECHNOLOGIES, LLC | | BM33024V5-9UM | 17446 | HUCK INTERNATIONAL, INC | | BM33024V5-9UM | 97928 | HUCK INTL INC | | HT271A5-9M | 73197 | HI-SHEAR CORPORATION | | HT271A5-9M | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | HT8137-5-9ASM | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT8137-5-9ASM | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M430V5-9ASM | 76301 | THE BOEING COMPANY | | ST3M430V5-9ASM | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M430V5-9ASM | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | ST3M430V5-9ASM | 0PKT6 | FTE SERVICES INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 1.077 INCHES MINIMUM AND 1.124 INCHES MAXIMUM | | FEATURES PROVIDED | O RING AND CETYL ALCOHOL LUBRICANT AND DRY FILM LUBRICANT | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | HEAD DIAMETER | 0.6287 INCHES MINIMUM AND 0.6335 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL | TITANIUM ALLOY UNS R56400 FASTENER | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD32.0 MICROINCHES GRIP32.0 MICROINCHES THREADS | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.531 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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