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National Stock Number:
5305-01-344-5533
Federal Supply Class:
5305
National Item Identification Number:
013445533
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:
| 110179-4-9ASM | 80539 | SPS TECHNOLOGIES, LLC | | HT271A4-9M | 73197 | HI-SHEAR CORPORATION | | HT271A4-9M | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | HT8137-4-9ASM | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT8137-4-9ASM | 0PTK6 | SPS TECHNOLOGIES INC | | HT8137-4-9ASM | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M430V4-9ASM | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M430V4-9ASM | 17446 | HUCK INTERNATIONAL, INC | | ST3M430V4-9ASM | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M430V4-9ASM | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M430V4-9ASM | 60516 | WEST COAST AEROSPACE, INC. | | ST3M430V4-9ASM | 73197 | HI-SHEAR CORPORATION | | ST3M430V4-9ASM | 76301 | THE BOEING COMPANY | | ST3M430V4-9ASM | 80539 | SPS TECHNOLOGIES, LLC | | ST3M430V4-9ASM | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M430V4-9ASM | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | ST3M430V4-9ASM | K5873 | RONEO PRESIDENT LTD |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.015 INCHES MINIMUM AND 1.062 INCHES MAXIMUM | | FEATURES PROVIDED | DRY FILM LUBRICANT AND O RING | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | HEAD DIAMETER | 0.5018 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM | | HEAD HEIGHT | 0.051 INCHES MINIMUM AND 0.054 INCHES MAXIMUM | | HEAD STYLE | FILLISTER COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | TITANIUM ALLOY UNS R56400 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.469 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 28 |
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