5305-00-801-7102 SCREW,CLOSE TOLERANCE Index 5305-00-801-7104 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-801-7103

Federal Supply Class:
5305

National Item Identification Number:
008017103

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:
51B221-21H06725SPS TECHNOLOGIES, LLC
51B221-21H06950HOWMET GLOBAL FASTENING SYSTEMS INC
51B221-21H0JRC1NORTHROP GRUMMAN TECHNICAL SERVICES, INC.
51B221-21H17446HUCK INTERNATIONAL, INC
51B221-21H27624SPS TECHNOLOGIES LLC
51B221-21H73197HI-SHEAR CORPORATION
51B221-21H76823NORTHROP GRUMMAN SYSTEMS CORPORATION
51B221-21H79U29NORTHROP GRUMMAN SYSTEMS CORPORATION
51B221-21H80539SPS TECHNOLOGIES, LLC
51B221-21H92215HOWMET GLOBAL FASTENING SYSTEMS INC
51B221-21HL4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.456 INCHES MINIMUM AND 1.503 INCHES MAXIMUM FIRST HOLE
CRITICALITY CODE JUSTIFICATIONFEAT
FASTENER LENGTH1.573 INCHES MINIMUM AND 1.620 INCHES MAXIMUM
GRIP DIAMETER0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
GRIP LENGTH1.298 INCHES MINIMUM AND 1.328 INCHES MAXIMUM
HEAD DIAMETER0.361 INCHES MINIMUM AND 0.381 INCHES MAXIMUM
HEAD HEIGHT0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM
HEAD STYLEMODIFIED PAN
INTERNAL DRIVE STYLEOFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.190 INCHES
SHANK UNTHREADED HOLE DIAMETER0.070 INCHES NOMINAL FIRST HOLE
SPECIAL FEATURESCRITICAL SAFETY ITEM; PER DSCR-MA-21-15267 ALL SOURCES OF SUPPLY MUST BE APPROVED BY ESA
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.276 INCHES MINIMUM
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNC


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