|
|
|
National Stock Number:
5305-01-467-6664
Federal Supply Class:
5305
National Item Identification Number:
014676664
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.
|
Manufacturer Information:
| NAS1580V3T7D | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
|
Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.149 INCHES MINIMUM AND 1.179 INCHES MAXIMUM | | GRIP DIAMETER | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM | | HEAD DIAMETER | 0.3813 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS4928 ASSN STD 1ST MATERIAL RESPONSE OR AMS4967 ASSN STD 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | TITANIUM ALLOY UNS R54520 OVERALL | | MINIMUM TENSILE STRENGTH | 3180 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.1900 INCHES | | SPECIAL FEATURES | POINT OF SCREW SHALL BE FLAT AND CHAMFERED; HEAT TREAT 160-180 KSI FTU PER AMS 4928 OR AMS 4967; THE OFFSET CRUCIFORM RECESS DIAMETER IS 0.248 INCH | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.3630 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 32 |
|
|