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National Stock Number:
5305-00-492-0317
Federal Supply Class:
5305
National Item Identification Number:
004920317
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:
| 974229-1 | 59364 | HONEYWELL INTERNATIONAL INC. | | 974229-1 | 99193 | HONEYWELL INTERNATIONAL INC. |
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Techincal Specification:
| COUNTERSINK ANGLE | 58.0 DEGREES MINIMUM AND 60.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.070 INCHES MINIMUM AND 1.090 INCHES MAXIMUM | | GRIP LENGTH | 0.542 INCHES NOMINAL | | GRIP DIAMETER | 0.1604 INCHES MINIMUM AND 0.1607 INCHES MAXIMUM | | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM OVERALL | | HEAD HEIGHT | 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM | | HEAD STYLE | HEXAGON COUNTERSUNK | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 630 OVERALL | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | SPECIAL FEATURES | RELIEF GROOVE UNDER HEAD 0.040 IN. MAX LG BY 0.151 IN. NOM DIA | | WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL | | THREAD CLASS | 3A | | THREAD LENGTH | 0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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