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National Stock Number:
5305-01-231-7422
Federal Supply Class:
5305
National Item Identification Number:
012317422
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:
| HT4057-6-9A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4057-6-9A | 17446 | HUCK INTERNATIONAL, INC | | HT4057-6-9A | 73197 | HI-SHEAR CORPORATION | | HT4057-6-9A | 80539 | SPS TECHNOLOGIES, LLC | | HT4057-6-9A | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4057-6-9A | 97928 | HUCK INTL INC | | ST3M733-6L-9 | 06710 | VALLEY-TODECO, INC. | | ST3M733-6L-9 | 06725 | SPS TECHNOLOGIES, LLC | | ST3M733-6L-9 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | ST3M733-6L-9 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M733-6L-9 | 27624 | SPS TECHNOLOGIES LLC | | ST3M733-6L-9 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M733-6L-9 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT4057-6-9A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M733-6L9 | 007R1 | TWIST TITE MFG, INC | | ST3M733-6L9 | 59563 | REID PRODUCTS INC. | | ST3M733-6L-9 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M733-6L-9 | 76301 | THE BOEING COMPANY | | ST3M733-6L-9 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M733-6L-9 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.188 INCHES MINIMUM AND 1.218 INCHES MAXIMUM | | GRIP LENGTH | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | HEAD DIAMETER | 0.692 INCHES MINIMUM AND 0.763 INCHES MAXIMUM | | HEAD STYLE | FLAT 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 | 0.374 INCHES | | SPECIAL FEATURES | LUBRICANT CETYL ALCOHOL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488,TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM AND CHROMATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.616 INCHES MINIMUM AND 0.666 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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