NSN 5305-01-337-6998

Part Details | CLOSE TOLERANCE SCREW

5305-01-337-6998 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: BACB30MS6R15, BACB30MS6R15, BACB30MS6R15, BACB30MS6R15, BACB30MS6R15, BACB30MS6R15, BACB30MS6R15, BACB30MS6R15, 5305-01-337-6998, 01-337-6998, 5305013376998, 013376998

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53APR 21, 199101-337-699829294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-337-6998
Part Number Cage Code Manufacturer
BACB30MS6R1592215ARCONIC GLOBAL FASTENERS & RINGS,INC.
BACB30MS6R1573197HI-SHEAR CORPORATION
BACB30MS6R1517446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
BACB30MS6R1597928HUCK INTL INC
BACB30MS6R15L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
BACB30MS6R1556878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
BACB30MS6R1580539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
BACB30MS6R1581205THE BOEING COMPANYDBA BOEING
Technical Data | NSN 5305-01-337-6998
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.375 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.578 INCHES NOMINAL
FASTENER LENGTH1.501 INCHES MINIMUM AND 1.531 INCHES MAXIMUM
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.708 INCHES MINIMUM AND 0.765 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM
GRIP DIAMETER0.4052 INCHES MINIMUM AND 0.4057 INCHES MAXIMUM
FEATURES PROVIDED CETYL ALCOHOL LUBRICANT
SPECIAL FEATURESRED DYE OR PAINT ON THREAD END BEFORE LUBRICATION