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National Stock Number:
5305-00-316-7377
Federal Supply Class:
5305
National Item Identification Number:
003167377
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:
| 10125164 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 11905-4L4 | 59563 | REID PRODUCTS INC. | | HT4025L4-4 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4025L4-4 | 0PTK6 | SPS TECHNOLOGIES INC | | HT4025L4-4 | 17446 | HUCK INTERNATIONAL, INC | | HT4025L4-4 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M454-4L4 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M454-4L4 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M454-414 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT4025L4-4 | 73197 | HI-SHEAR CORPORATION | | HT4025L4-4 | 80539 | SPS TECHNOLOGIES, LLC | | HT4025L4-4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4025L4-4 | 97928 | HUCK INTL INC | | HT4025L4-4 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | ST3M454-4L4 | 60516 | WEST COAST AEROSPACE, INC. | | WC402514-4 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M454-4L4 | 73197 | HI-SHEAR CORPORATION | | ST3M454-4L4 | 76301 | THE BOEING COMPANY | | ST3M454-4L4 | 80539 | SPS TECHNOLOGIES, LLC | | ST3M454-4L4 | 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 | 0.766 INCHES MINIMUM AND 0.796 INCHES MAXIMUM | | GRIP DIAMETER | 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM | | GRIP LENGTH | 0.562 INCHES MINIMUM AND 0.573 INCHES MAXIMUM | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.449 INCHES MINIMUM AND 0.507 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 | 0.250 INCHES | | 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 | 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 28 |
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