NSN 5305-01-054-6268

Part Details | CLOSE TOLERANCE SCREW

5305-01-054-6268 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: VT1694F44, VT1694F4-4, C798544, C7985-4-4, H18544, H185-4-4, C798544, C7985-4-4, C798544, C7985-4-4, 1215584A4P, 121558-4-A4P, AIC98544P, AIC985-4-4P, AIC98544, AIC985-4-4, PBF116644, PBF1166-4-4, 5305-01-054-6268, 01-054-6268, 5305010546268, 010546268

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 23, 197801-054-626829294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HEXAGON

Cross Reference | NSN 5305-01-054-6268
Part Number Cage Code Manufacturer
VT1694F4-492215ARCONIC GLOBAL FASTENERS & RINGS,INC.
C7985-4-406950ARCONIC GLOBAL FASTENERS & RINGS,INC.
H185-4-417446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
C7985-4-481755LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN AERONAUTICS
C7985-4-456878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
121558-4-A4P80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
AIC985-4-4P06725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
AIC985-4-406725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
PBF1166-4-427624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
Technical Data | NSN 5305-01-054-6268
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.403 INCHES NOMINAL
FASTENER LENGTH0.638 INCHES MINIMUM AND 0.668 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH220000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.350 INCHES MINIMUM AND 0.399 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HEXAGON
GRIP LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
GRIP DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM