5310-01-530-6555 WASHER,FLAT Index 6650-01-530-6557 SPACER,OPTICAL ELEMENT

National Stock Number:
5305-01-530-6556

Federal Supply Class:
5305

National Item Identification Number:
015306556

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:
3M927-3DL5007R1TWIST TITE MFG, INC
3M927-3DL558998FASTENER INNOVATION TECHNOLOGY, INC.
3M927-3DL576301THE BOEING COMPANY
HT4069-3D5A1RC86HOWMET GLOBAL FASTENING SYSTEMS INC
HT4069-3D5A56878SPS TECHNOLOGIES, LLC
HT4069-3D5A73197HI-SHEAR CORPORATION
HT4069-3D5A80539SPS TECHNOLOGIES, LLC
HT4069-3D5AL4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC
WC4069-3D560516WEST COAST AEROSPACE, INC.


Techincal Specification:
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
FASTENER LENGTH0.703 INCHES MINIMUM AND 0.733 INCHES MAXIMUM
GRIP DIAMETER0.190 INCHES NOMINAL
GRIP LENGTH0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM
HEAD DIAMETER0.296 INCHES MINIMUM AND 0.301 INCHES MAXIMUM
HEAD STYLEOVAL COUNTERSUNK
INTERNAL DRIVE STYLEHIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY 718 OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW, CLOSE TOLERANCE
SPECIAL FEATURESDRILLED THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-83488 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTALUMINUM AND CHROMATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.406 INCHES NOMINAL
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNJF


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