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National Stock Number:
5305-01-526-6119
Federal Supply Class:
5305
National Item Identification Number:
015266119
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:
| 3D0172-3-8-14 | 88277 | THE BOEING COMPANY | | CA21088-10-8-14 | 29372 | HOWMET GLOBAL FASTENING SYSTEMS INC. | | FIT7693-3-8-14 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | FT1193-10-8-14 | 58794 | FASTENER TECHNOLOGY CORP |
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Techincal Specification:
| FASTENER LENGTH | 0.875 INCHES NOMINAL | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.250 INCHES NOMINAL | | HEAD HEIGHT | 0.106 INCHES MINIMUM AND 0.120 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE II | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, CLOSE TOLERANCE | | WIDTH BETWEEN FLATS | 0.305 INCHES MINIMUM AND 0.314 INCHES MAXIMUM | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.525 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 32 |
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