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National Stock Number:
5305-01-312-0243
Federal Supply Class:
5305
National Item Identification Number:
013120243
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:
| BACB30MS6S18 | 06725 | SPS TECHNOLOGIES, LLC | | BACB30MS6S18 | 17446 | HUCK INTERNATIONAL, INC | | BACB30MS6S18 | 56878 | SPS TECHNOLOGIES, LLC | | BACB30MS6S18 | 80539 | SPS TECHNOLOGIES, LLC | | BACB30MS6S18 | 81205 | THE BOEING COMPANY | | BACB30MS6S18 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30MS6S18 | 97928 | HUCK INTL INC |
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Techincal Specification:
| NOMINAL THREAD DIAMETER | 0.375 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.553 INCHES MINIMUM AND | | 0.603 INCHES MAXIMUM | | FASTENER LENGTH | 1.688 INCHES MINIMUM AND | | 1.718 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR | | AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | COLOR | RED THREADS | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.708 INCHES MINIMUM AND | | 0.765 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 1.115 INCHES MINIMUM AND | | 1.135 INCHES MAXIMUM | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND | | 0.3747 INCHES MAXIMUM | | FEATURES PROVIDED | DRY FILM LUBRICANT | | SPECIAL FEATURES | DRY FILM LUBRICANT PER MIL-L-46010 | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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