5305-01-167-2407 SCREW,CLOSE TOLERANCE Index 5305-01-167-2409 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-167-2408

Federal Supply Class:
5305

National Item Identification Number:
011672408

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:
51B335-2206725SPS TECHNOLOGIES, LLC
51B335-2206950HOWMET GLOBAL FASTENING SYSTEMS INC
51B335-220JRC1NORTHROP GRUMMAN TECHNICAL SERVICES, INC.
51B335-2217446HUCK INTERNATIONAL, INC
51B335-2227624SPS TECHNOLOGIES LLC
51B335-2273197HI-SHEAR CORPORATION
51B335-2276823NORTHROP GRUMMAN SYSTEMS CORPORATION
51B335-2280539SPS TECHNOLOGIES, LLC
51B335-2292215HOWMET GLOBAL FASTENING SYSTEMS INC
51B335-2297928HUCK INTL INC
51B335-22L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE70.0 DEGREES MINIMUM AND 130.0 DEGREES MAXIMUM
FASTENER LENGTH1.734 INCHES MINIMUM AND 1.781 INCHES MAXIMUM
GRIP DIAMETER0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
GRIP LENGTH1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.578 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEOFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.312 INCHES
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.349 INCHES MINIMUM AND 0.416 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH24


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