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National Stock Number:
5305-01-520-9405
Federal Supply Class:
5305
National Item Identification Number:
015209405
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:
| 120-265V3A26 | 97499 | BELL TEXTRON INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | CRITICALITY CODE JUSTIFICATION | AGAV | | FASTENER LENGTH | 1.901 INCHES NOMINAL | | GRIP DIAMETER | 0.163 INCHES NOMINAL | | GRIP LENGTH | 1.625 INCHES NOMINAL | | HEAD DIAMETER | 0.380 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | TORX | | MATERIAL DOCUMENT AND CLASSIFICATION | 3AL-4VAMS4928 FED SPEC 1ST MATERIAL RESPONSE OR AMS4967 FED SPEC 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | TITANIUM ALLOY OVERALL | | MINIMUM TENSILE STRENGTH | 3180 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, SHEAR, FLAT 100 DEG HEAD, CLOSE TOLERANCE, SHORT THREAD, SIX LOBE RECESS, 95 KSI FSU | | SPECIAL FEATURES | THIS SCREW INTENDED FOR APPLICATIONS WHICH REQUIRE THE SIX LOBE RECESS;HAS UNDRILLED SHANK | | SPLINE MAJOR DIAMETER | 0.189 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ALUMINUM PIGMENTED COATING PER NAS4006 FED SPEC 1ST TREATMENT RESPONSE AND CETYL ALCOHOL LUBRICANT PER MIL-L-87132, TYPE 3, GRADE B FED SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD LENGTH | 0.260 INCHES NOMINAL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 32 |
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