5305-01-505-3997 SCREW,CLOSE TOLERANCE Index 1560-01-505-3999 COVER,ACCESS,AIRCRAFT

National Stock Number:
5305-01-505-3998

Federal Supply Class:
5305

National Item Identification Number:
015053998

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:
11853C3-4-5A59563REID PRODUCTS INC.
3M1262C3-4-5A007R1TWIST TITE MFG, INC
TX1024C3-4-5A06710VALLEY-TODECO, INC.
TX1024C3-4-5A06725SPS TECHNOLOGIES, LLC
TX1024C3-4-5A06950HOWMET GLOBAL FASTENING SYSTEMS INC
3M1262C3-4-5A76301THE BOEING COMPANY
TX1024C3-4-5A0K6Z0SATURN FASTENERS INC
TX1024C3-4-5A0PTK6SPS TECHNOLOGIES INC
TX1024C3-4-5A0ZC92HEARTLAND PRECISION FASTENERS INC
TX1024C3-4-5A17446HUCK INTERNATIONAL, INC
TX1024C3-4-5A1EM77B & B SPECIALTIES INC
TX1024C3-4-5A1VSL7HOUSTON PRECISION FASTENERS I LP
TX1024C3-4-5A27624SPS TECHNOLOGIES LLC
TX1024C3-4-5A4WL75CAMCAR LLC DIV CAMCAR LLC
TX1024C3-4-5A56878SPS TECHNOLOGIES, LLC
TX1024C3-4-5A58998FASTENER INNOVATION TECHNOLOGY, INC.
WC1262C3-4-5A60516WEST COAST AEROSPACE, INC.
TX1024C3-4-5A73197HI-SHEAR CORPORATION
TX1024C3-4-5A80539SPS TECHNOLOGIES, LLC
TX1024C3-4-5A92215HOWMET GLOBAL FASTENING SYSTEMS INC
TX1024C3-4-5AC4293ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH
TX1024C3-4-5AL4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH2.548 INCHES MINIMUM AND 2.578 INCHES MAXIMUM
GRIP DIAMETER0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
GRIP LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
HEAD DIAMETER0.358 INCHES MINIMUM AND 0.365 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLETORX
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,100 DEGREE REDUCED HEAD,GEAR DRIVE RECESS-SPECIAL THREAD LENGTH INCONCEL 718 (125 KSI SHEAR)
MATERIAL DOCUMENT AND CLASSIFICATIONBPS-F-69 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY 718 OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES
SPLINE MAJOR DIAMETER0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM
SPLINE MINOR DIAMETER0.1105 INCHES MINIMUM AND 0.1125 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.313 INCHES NOMINAL
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH32


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