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National Stock Number:
5305-01-264-5054
Federal Supply Class:
5305
National Item Identification Number:
012645054
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:
| 10113610 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | HT4053-4-4 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT4053-4-4 | 73197 | HI-SHEAR CORPORATION | | HT4053-4-4 | 80539 | SPS TECHNOLOGIES, LLC | | HT4053-4-4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4053-4-4 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4053-4-4 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | WC4053-4-4 | 60516 | WEST COAST AEROSPACE, INC. |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.704 INCHES MINIMUM AND 0.734 INCHES MAXIMUM | | GRIP DIAMETER | 0.247 INCHES MINIMUM AND 0.248 INCHES MAXIMUM | | GRIP LENGTH | 0.250 INCHES NOMINAL | | HEAD DIAMETER | 0.389 INCHES MINIMUM AND 0.394 INCHES MAXIMUM | | HEAD STYLE | OVAL COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MFR REF SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-5000 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 8740 OVERALL OR STEEL COMP 4340 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIFICATION/STANDARD DATA | 73197-HT4053-4-4 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PS13143,TY 11,CL 3 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.469 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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