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National Stock Number:
5305-01-507-5050
Federal Supply Class:
5305
National Item Identification Number:
015075050
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:
| HT4017-08-11 | 17446 | HUCK INTERNATIONAL, INC | | HT4017-08-11 | 56878 | SPS TECHNOLOGIES, LLC | | HT4017-08-11 | 73197 | HI-SHEAR CORPORATION | | ST3M649-08-11 | 76301 | THE BOEING COMPANY | | HT4017-08-11 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4017-08-11 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM | | GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | GRIP DIAMETER | 0.1630 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM | | HEAD DIAMETER | 0.2916 INCHES MINIMUM AND 0.3016 INCHES MAXIMUM | | HEAD STYLE | OVAL COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112,MCDONNEL DOUGLAS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.1640 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CLOSE TOLERANCE-100 DEGREE C'SUNK HI-TORGUE, SPECIAL HEAD, CRES (125 KSI FSU) .164-32 SIZE | | THREAD CLASS | 3A | | THREAD LENGTH | 0.312 INCHES NOMINAL | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNJC | | THREAD QUANTITY PER INCH | 32 |
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