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National Stock Number:
5305-01-338-4023
Federal Supply Class:
5305
National Item Identification Number:
013384023
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:
| HT4075D10-22-91 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4075D10-22-91 | 17419 | DEUTSCH CO THE | | HT4075D10-22-91 | 17446 | HUCK INTERNATIONAL, INC | | HT4075D10-22-91 | 73197 | HI-SHEAR CORPORATION | | HT4075D10-22-91 | 80539 | SPS TECHNOLOGIES, LLC | | HT4075D10-22-91 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4075D10-22-91 | 97928 | HUCK INTL INC | | HT4075D10-22-91 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 2.313 INCHES MINIMUM AND 2.343 INCHES MAXIMUM | | GRIP LENGTH | 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM | | GRIP DIAMETER | 0.6235 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM | | HEAD DIAMETER | 1.223 INCHES MINIMUM AND 1.272 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 | 0.625 INCHES | | SPECIAL FEATURES | TAPPED HOLE IN HEAD 0.138-32 UNJC-3B THREADS. DISTANCE FROM TOP OF HEAD TO INJECTION PORT 0.910 NOM. INCH. INJECTION PORT 0.120 NOM. IN. LG; 0.060 NOM. IN. WIDE | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD32.0 MICROINCHES GRIP32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.953 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 18 |
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