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National Stock Number:
5305-00-494-5678
Federal Supply Class:
5305
National Item Identification Number:
004945678
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:
| 106580-1 | 56878 | SPS TECHNOLOGIES, LLC | | 106580-1 | 80539 | SPS TECHNOLOGIES, LLC | | CM2046-1 | 17446 | HUCK INTERNATIONAL, INC | | CM2046-1 | 56878 | SPS TECHNOLOGIES, LLC | | CM2046-1 | 71379 | CESSNA AIRCRAFT COMPANY | | CM2046-1 | 7EK50 | TEXTRON AVIATION INC | | HT8136-1 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT8136-1 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | CM2046-1 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | CM2046-1 | 97928 | HUCK INTL INC | | HT8136-1 | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH |
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Techincal Specification:
| FASTENER LENGTH | 0.939 INCHES MINIMUM AND 0.949 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.392 INCHES MINIMUM AND 0.402 INCHES MAXIMUM | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.350 INCHES MAXIMUM | | HEAD HEIGHT | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8740 OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SURFACE FINISH | 16.0 MICROINCHES THREADS | | SURFACE FINISH | 40.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 40.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.475 INCHES MINIMUM AND 0.557 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNF |
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