5305-01-320-8067 SCREW,CLOSE TOLERANCE Index 5305-01-320-8069 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-320-8068

Federal Supply Class:
5305

National Item Identification Number:
013208068

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:
NAS1125V1380205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
THREAD SERIES DESIGNATORUNJF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.375 INCHES NOMINAL
FASTENER LENGTH1.172 INCHES MINIMUM AND
1.202 INCHES MAXIMUM
MATERIALTITANIUM ALLOY UNS R56400 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.429 INCHES MINIMUM AND
0.438 INCHES MAXIMUM
HEAD HEIGHT0.162 INCHES MINIMUM AND
0.183 INCHES MAXIMUM
INTERNAL DRIVE STYLEOFFSET CRUCIFORM (TORQUE SET)
GRIP LENGTH0.802 INCHES MINIMUM AND
0.822 INCHES MAXIMUM
GRIP DIAMETER0.3106 INCHES MINIMUM AND
0.3120 INCHES MAXIMUM
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
32.0 MICROINCHES GRIP
32.0 MICROINCHES THREADS
SPECIFICATION/STANDARD DATA80205-NAS1125 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD


Click here to Register for Free 30-day Trial