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National Stock Number:
5305-01-468-9560
Federal Supply Class:
5305
National Item Identification Number:
014689560
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:
| 11824D4-6A | 59563 | REID PRODUCTS INC. | | 3M1169D4-6A | 76301 | THE BOEING COMPANY | | TX1026D4-6A | 06725 | SPS TECHNOLOGIES, LLC | | TX1026D4-6A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HP1169D4-6 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | TX1026D4-6A | 27624 | SPS TECHNOLOGIES LLC | | TX1026D4-6A | 56878 | SPS TECHNOLOGIES, LLC | | TX1026D4-6A | 73197 | HI-SHEAR CORPORATION | | TX1026D4-6A | 80539 | SPS TECHNOLOGIES, LLC | | TX1026D4-6A | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | TX1026D4-6A | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | TX1026D4-6A | 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 | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM | | GRIP LENGTH | 0.315 INCHES MINIMUM AND 0.335 INCHES MAXIMUM | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | HEAD DIAMETER | 0.477 INCHES MINIMUM AND 0.507 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | TORX | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112, TYPE E, CAGE 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP XM-13 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SINGLE SHEAR STRENGTH | 125000 POUNDS PER SQUARE INCH | | SPLINE MAJOR DIAMETER | 0.221 INCHES NOMINAL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD LENGTH | 0.354 INCHES MINIMUM AND 0.425 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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