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National Stock Number:
5305-00-150-3242
Federal Supply Class:
5305
National Item Identification Number:
001503242
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:
| 106334-8-23D | 56878 | SPS TECHNOLOGIES, LLC | | 106334-8-23D | 80539 | SPS TECHNOLOGIES, LLC | | 202-15522-8A23 | 06725 | SPS TECHNOLOGIES, LLC | | 202-15522-8A23 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 202-15522-8A23 | 56878 | SPS TECHNOLOGIES, LLC | | 202-15522-8A23 | 80378 | TRIUMPH AEROSTRUCTURES, LLC | | AIC83-8A23 | 06725 | SPS TECHNOLOGIES, LLC | | BA45132-3A23 | 17446 | HUCK INTERNATIONAL, INC | | 202-15522-8A23 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VT1631-8-23T | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BA45132-3A23 | 97928 | HUCK INTL INC |
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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 | 0.427 INCHES MINIMUM AND | | 0.494 INCHES MAXIMUM | | FASTENER LENGTH | 1.874 INCHES MINIMUM AND | | 1.921 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM 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 | 0.720 INCHES MINIMUM AND | | 0.754 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | GRIP LENGTH | 1.427 INCHES MINIMUM AND | | 1.447 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.735 INCHES MINIMUM AND | | 1.814 INCHES MAXIMUM FIRST HOLE | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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