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National Stock Number:
5305-01-325-5993
Federal Supply Class:
5305
National Item Identification Number:
013255993
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:
| HT4075D5-12-18 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | | HT4075D5-12-18 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4075D5-12-18 | 56878 | SPS TECHNOLOGIES, LLC | | HT4075D5-12-18 | 73197 | HI-SHEAR CORPORATION | | HT4075D5-12-18 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4075D5-12-18 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.531 INCHES NOMINAL | | FASTENER LENGTH | 1.266 INCHES MINIMUM AND | | 1.296 INCHES MAXIMUM | | MATERIAL | STEEL COMP XM-13 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.625 INCHES MINIMUM AND | | 0.635 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | HOLE CONFIGURATION STYLE | ROUND LONGITUDINAL HOLE | | HOLE TYPE | THREADED | | HOLE QUANTITY | 1 | | HOLE NOMINAL THREAD DIAMETER | 0.138 INCHES | | HOLE THREAD QUANTITY PER INCH | 32 | | GRIP LENGTH | 0.750 INCHES NOMINAL | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND | | 0.3120 INCHES MAXIMUM | | SPECIAL FEATURES | PORT HOLE 0.180 IN. LG FROM HEAD,0.060 IN. HIGH; 0.120 IN. LG | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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