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National Stock Number:
5305-00-401-5117
Federal Supply Class:
5305
National Item Identification Number:
004015117
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:
| 3M263-8-19 | 76301 | THE BOEING COMPANY | | 66117H8-19 | 50392 | SPS TECHNOLOGIES INC | | HS2623-8Z19 | 17446 | HUCK INTERNATIONAL, INC | | 66117H8-19 | 56878 | SPS TECHNOLOGIES, LLC | | HT195-8-19 | 73197 | HI-SHEAR CORPORATION | | HS2623-8Z19 | 97928 | HUCK INTL INC | | HT195-8-19 | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | HT195-8-19 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | HT195-8-19 | R1120 | SATAIR A/S |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.623 INCHES MINIMUM | | FASTENER LENGTH | 1.821 INCHES MINIMUM AND | | 1.868 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MAC PS13145 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND | | 50.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 1.007 INCHES MINIMUM AND | | 1.017 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 1.178 INCHES MINIMUM AND | | 1.198 INCHES MAXIMUM | | GRIP DIAMETER | 0.4985 INCHES MINIMUM AND | | 0.4995 INCHES MAXIMUM |
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