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National Stock Number:
5305-01-517-4975
Federal Supply Class:
5305
National Item Identification Number:
015174975
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:
| HT4054-3-17A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4054-3-17A | 0PTK6 | SPS TECHNOLOGIES INC | | HT4054-3-17A | 17446 | HUCK INTERNATIONAL, INC | | HT4054-3-17A | 73197 | HI-SHEAR CORPORATION | | HT4054-3-17A | 80539 | SPS TECHNOLOGIES, LLC | | HT4054-3-17A | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M730-3L17 | 007R1 | TWIST TITE MFG, INC | | ST3M730-3L17 | 17446 | HUCK INTERNATIONAL, INC | | ST3M730-3L17 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M730-3L17 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | WC4054-3-17 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M730-3L17 | 76301 | THE BOEING COMPANY | | HT4054-3-17A | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4054-3-17A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | WC4054-3-17A | 60516 | WEST COAST AEROSPACE, INC. |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.338 INCHES NOMINAL | | FASTENER LENGTH | 1.125 INCHES NOMINAL | | MATERIAL | STEEL COMP 8740 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM AND | | LUBRICANT OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488,TYPE 2,CL 3 MIL SPEC 1ST TREATMENT RESPONSE OVERALL | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.339 INCHES MINIMUM AND | | 0.381 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 1.062 INCHES NOMINAL | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND | | 0.1895 INCHES MAXIMUM |
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