1560-01-481-9374 COVER,ACCESS,AIRCRAFT Index 5305-01-481-9376 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-481-9375

Federal Supply Class:
5305

National Item Identification Number:
014819375

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:
11825D4-7AF59563REID PRODUCTS INC.
3M1170D4-7AF76301THE BOEING COMPANY
TX1027D4-7AF06725SPS TECHNOLOGIES, LLC
TX1027D4-7AF06950HOWMET GLOBAL FASTENING SYSTEMS INC
TX1027D4-7AF0PTK6SPS TECHNOLOGIES INC
HP1170D4-7F0ZC92HEARTLAND PRECISION FASTENERS INC
TX1027D4-7AF27624SPS TECHNOLOGIES LLC
TX1027D4-7AF56878SPS TECHNOLOGIES, LLC
TX1027D4-7AF73197HI-SHEAR CORPORATION
TX1027D4-7AF80539SPS TECHNOLOGIES, LLC
TX1027D4-7AFC4293ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH
TX1027D4-7AFL4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
CRITICALITY CODE JUSTIFICATIONAGAV
FASTENER LENGTH0.863 INCHES NOMINAL
GRIP DIAMETER0.249 INCHES NOMINAL
GRIP LENGTH0.438 INCHES NOMINAL
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 - PH13-8MO (125 KSI SHEAR), INCONEL 718 (125 KSI SHEAR), 6AL-4V TITANIUM (95 KSI SHEAR).
MATERIALSTEEL COMP XM-13 OVERALL
MINIMUM TENSILE STRENGTH4400 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.250 INCHES
POINT STYLEFLAT
POINT DIAMETER0.425 INCHES NOMINAL
SPLINE MAJOR DIAMETER0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM
SURFACE TREATMENTALUMINUM OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.425 INCHES NOMINAL
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH28


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