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National Stock Number:
5305-00-108-5530
Federal Supply Class:
5305
National Item Identification Number:
001085530
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:
| 3M46-4-17 | 09524 | POWERHOLD INC | | 3M46-4-17 | 56878 | SPS TECHNOLOGIES, LLC | | 3M46-4-17 | 76301 | THE BOEING COMPANY | | 3M46-4-17 | 80539 | SPS TECHNOLOGIES, LLC | | 3M46-4-17 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 54266-4-17 | 56878 | SPS TECHNOLOGIES, LLC | | 642AS0685-7 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | | HT408A-4-17 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4UA-17 | 73197 | HI-SHEAR CORPORATION | | HT4UA-17 | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | HT4UA-17 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 1.515 INCHES MINIMUM AND 1.562 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM | | HEAD DIAMETER | 0.5018 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM | | HEAD HEIGHT | 0.106 INCHES MINIMUM AND 0.108 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 3-48 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | FURNISHED W/ PREFORMED PACKING | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 3-48 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.372 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 28 |
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