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National Stock Number:
5305-01-105-9374
Federal Supply Class:
5305
National Item Identification Number:
011059374
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:
| 11881C4-8D | 59563 | REID PRODUCTS INC. | | 3M925C4-8D | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT4067-4-8 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4067-4-8 | 17446 | HUCK INTERNATIONAL, INC | | 3M925C4-8D | 76301 | THE BOEING COMPANY | | CHT4067-4-8 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4067-4-8D | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4067-4-8D | 0PTK6 | SPS TECHNOLOGIES INC | | HT4067-4-8D | 17446 | HUCK INTERNATIONAL, INC | | HT4067-4-8 | 56878 | SPS TECHNOLOGIES, LLC | | HT4067-4-8 | 73197 | HI-SHEAR CORPORATION | | HT4067-4-8 | 80539 | SPS TECHNOLOGIES, LLC | | HT4067-4-8 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4067-4-8 | 97928 | HUCK INTL INC | | WC4067-4-8D | 60516 | WEST COAST AEROSPACE, INC. | | HT4067-4-8D | 73197 | HI-SHEAR CORPORATION | | HT4067-4-8D | 80539 | SPS TECHNOLOGIES, LLC | | HT4067-4-8D | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4067-4-8D | 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 | 0.954 INCHES MINIMUM AND 0.984 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | HEAD HEIGHT | 0.0713 INCHES MINIMUM AND 0.0733 INCHES MAXIMUM | | HEAD DIAMETER | 0.5018 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
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