NSN 5305-01-374-5945

Part Details | CLOSE TOLERANCE SCREW

5305-01-374-5945 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: ST3M40V48ASM, ST3M40V4-8ASM, HT813748ASM, HT8137-4-8ASM, HT813748ASM, HT8137-4-8ASM, ST3M430V48ASM, ST3M430V4-8ASM, ST3M430V48ASM, ST3M430V4-8ASM, ST3M40V48ASM, ST3M40V4-8ASM, HT271A48M, HT271A4-8M, ST3M430V48ASM, ST3M430V4-8ASM, ST3M40V48ASM, ST3M40V4-8ASM, BM33024V48UM, BM33024V4-8UM, HT271A48M, HT271A4-8M, 11017948ASM, 110179-4-8ASM, ST3M40V48ASM, ST3M40V4-8ASM, 11017948ASM, 110179-4-8ASM, ST3M40V48ASM, ST3M40V4-8ASM, 5305-01-374-5945, 01-374-5945, 5305013745945, 013745945

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53APR 26, 199301-374-594529294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-374-5945
Part Number Cage Code Manufacturer
ST3M40V4-8ASM92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT8137-4-8ASM92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT8137-4-8ASM5M902ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M430V4-8ASM76301BOEING COMPANY, THEDBA BOEING
ST3M430V4-8ASM58998FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T
ST3M40V4-8ASM73197HI-SHEAR CORPORATION
HT271A4-8M73197HI-SHEAR CORPORATION
ST3M430V4-8ASM17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
ST3M40V4-8ASM17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
BM33024V4-8UM17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HT271A4-8ML4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
110179-4-8ASMK5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
ST3M40V4-8ASMK5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
110179-4-8ASM80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
ST3M40V4-8ASM80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-01-374-5945
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.469 INCHES NOMINAL
FASTENER LENGTH0.963 INCHES MINIMUM AND 0.990 INCHES MAXIMUM
HEAD STYLE1 HEXAGON COUNTERSUNK
HEAD DIAMETER0.5018 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM
HEAD HEIGHT0.1060 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
FEATURES PROVIDED DRY FILM LUBRICANT AND O RING