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National Stock Number:
5305-01-337-6996
Federal Supply Class:
5305
National Item Identification Number:
013376996
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:
| BACB30MS9R27 | 0PTK6 | SPS TECHNOLOGIES INC | | BACB30MS9R27 | 17446 | HUCK INTERNATIONAL, INC | | BACB30MS9R27 | 56878 | SPS TECHNOLOGIES, LLC | | BACB30MS9R27 | 73197 | HI-SHEAR CORPORATION | | BACB30MS9R27 | 80539 | SPS TECHNOLOGIES, LLC | | BACB30MS9R27 | 81205 | THE BOEING COMPANY | | BACB30MS9R27 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30MS9R27 | 97928 | HUCK INTL INC | | BACB30MS9R27 | 9N513 | VOI-SHAN/CHATSWORTH DIV OF VSI CORP SUB OF FAIRCHILD INDUSTRIES INC | | BACB30MS9R27 | 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 | 2.513 INCHES MINIMUM AND 2.543 INCHES MAXIMUM | | FEATURES PROVIDED | CETYL ALCOHOL LUBRICANT | | GRIP DIAMETER | 0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM | | GRIP LENGTH | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM | | HEAD DIAMETER | 1.071 INCHES MINIMUM AND 1.146 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL | TITANIUM ALLOY UNS R56400 OVERALL | | NOMINAL THREAD DIAMETER | 0.562 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | SPECIAL FEATURES | RED DYE OR PAINT ON THREAD END BEFORE LUBRICATION | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BAC 5861,CAGE81205 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.840 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 18 |
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