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National Stock Number:
5305-01-025-4855
Federal Supply Class:
5305
National Item Identification Number:
010254855
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:
| HT4017-08-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4017-08-5 | 17446 | HUCK INTERNATIONAL, INC | | HT4017-08-5 | 27624 | SPS TECHNOLOGIES LLC | | HT4017-08-5 | 56878 | SPS TECHNOLOGIES, LLC | | HT4017-08-5 | 73197 | HI-SHEAR CORPORATION | | HT4017-08-5 | 80539 | SPS TECHNOLOGIES, LLC | | HT4017-08-5 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4017-08-5 | 97928 | HUCK INTL INC | | HT4017-08-5 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M649-08-5 | 007R1 | TWIST TITE MFG, INC | | ST3M649-08-5 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.609 INCHES MINIMUM AND 0.639 INCHES MAXIMUM | | GRIP LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | GRIP DIAMETER | 0.1630 INCHES MINIMUM AND 0.1635 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 | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP XM-13 OVERALL | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.287 INCHES MINIMUM AND 0.337 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJC |
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