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National Stock Number:
5305-01-494-9117
Federal Supply Class:
5305
National Item Identification Number:
014949117
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:
| HT4020-6-14 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-6-14 | 0PTK6 | SPS TECHNOLOGIES INC | | HT4020-6-14 | 17446 | HUCK INTERNATIONAL, INC | | HT4020-6-14 | 73197 | HI-SHEAR CORPORATION | | HT4020-6-14 | 80539 | SPS TECHNOLOGIES, LLC | | HT4020-6-14 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M652C6-14D | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | WC4020-6-14 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M652C6-14D | 76301 | THE BOEING COMPANY | | HT4020-6-14 | 97928 | HUCK INTL INC | | HT4020-6-14 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4020-6-14 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM | | FASTENER LENGTH | 1.500 INCHES MINIMUM AND 1.547 INCHES MAXIMUM | | GRIP DIAMETER | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | GRIP LENGTH | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM | | HEAD DIAMETER | 0.756 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | HEAD HEIGHT | 0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | 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 | 0.375 INCHES | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.615 INCHES MINIMUM AND 0.682 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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