NSN 5305-01-185-4550

Part Details | CLOSE TOLERANCE SCREW

5305-01-185-4550 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.

Alternate Parts: CA2193406, CA2193-4-06, LE11100024006, LE111-0002-4006, CA2193406, CA2193-4-06, FIT0100024006, FIT01-0002-4006, 5305-01-185-4550, 01-185-4550, 5305011854550, 011854550

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUL 29, 198401-185-455029294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HEXAGON

Cross Reference | NSN 5305-01-185-4550
Part Number Cage Code Manufacturer
CA2193-4-0629372ARCONIC GLOBAL FASTENERS & RINGS,INC.
LE111-0002-400643999BOEING COMPANY, THEDBA BOEING
CA2193-4-0658998FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T
FIT01-0002-400658998FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T
Technical Data | NSN 5305-01-185-4550
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.445 INCHES MINIMUM AND 0.557 INCHES MAXIMUM
FASTENER LENGTH0.901 INCHES MINIMUM AND 0.922 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.454 INCHES MINIMUM AND 0.508 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES MINIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.157 INCHES MINIMUM AND 0.159 INCHES MAXIMUM
GRIP LENGTH0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM