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National Stock Number:
5305-01-038-8694
Federal Supply Class:
5305
National Item Identification Number:
010388694
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:
| HT4049-6D61 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4049-6D61 | 17446 | HUCK INTERNATIONAL, INC | | HT4049-6D61 | 56878 | SPS TECHNOLOGIES, LLC | | HT4049-6D61 | 73197 | HI-SHEAR CORPORATION | | HT4049-6D61 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4049-6D61 | 97928 | HUCK INTL INC | | HT4049-6D61 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M714-6D61 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M714-6D61 | 59563 | REID PRODUCTS INC. | | ST3M714-6D61 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M714-6D61 | 76301 | THE BOEING COMPANY | | ST3M714-6D61 | 80539 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.113 INCHES MINIMUM AND 0.123 INCHES MAXIMUM FIRST HOLE | | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 4.188 INCHES MINIMUM AND 4.218 INCHES MAXIMUM | | GRIP DIAMETER | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | GRIP LENGTH | 3.802 INCHES MINIMUM AND 3.822 INCHES MAXIMUM | | HEAD DIAMETER | 0.752 INCHES MINIMUM AND 0.762 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112,MCDONNEL DOUGLAS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.366 INCHES MINIMUM AND 0.416 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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