NSN 5305-01-241-2653

Part Details | CLOSE TOLERANCE SCREW

5305-01-241-2653 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: 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 642AS16316, 642AS1631-6, 3M925C418A, 3M925C4-18A, 11881C418A, 11881C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, HT4067418A, HT4067-4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 3M925C418A, 3M925C4-18A, 5305-01-241-2653, 01-241-2653, 5305012412653, 012412653

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 24, 198601-241-265329294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-241-2653
Part Number Cage Code Manufacturer
3M925C4-18A06950ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M925C4-18A92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M925C4-18A76301BOEING COMPANY, THEDBA BOEING
3M925C4-18A58998FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T
3M925C4-18A0ZC92HEARTLAND PRECISION FASTENERS, INC.
3M925C4-18A73197HI-SHEAR CORPORATION
3M925C4-18A1VSL7HOUSTON PRECISION FASTENERS I, LP
3M925C4-18A17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
3M925C4-18AL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
642AS1631-630003NAVAL AIR SYSTEMS COMMAND MANAGEDORIGINAL DESIGN ACTIVITY NOT
3M925C4-18A59563REID PRODUCTS INC.DBA REID PRODUCTS
11881C4-18A59563REID PRODUCTS INC.DBA REID PRODUCTS
3M925C4-18A0PTK6SPS TECHNOLOGIES INC
3M925C4-18AK5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
3M925C4-18A56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
HT4067-4-18A80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
3M925C4-18A06725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
3M925C4-18A27624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
3M925C4-18A70236TACTAIR FLUID CONTROLS, INC.
3M925C4-18A06710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
3M925C4-18A60516WEST COAST AEROSPACE INC
Technical Data | NSN 5305-01-241-2653
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
FASTENER LENGTH1.579 INCHES MINIMUM AND 1.609 INCHES MAXIMUM
HEAD STYLE1 HEXAGON COUNTERSUNK
HEAD DIAMETER0.501 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD HEIGHT0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM
GRIP DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
SPECIAL FEATURESFURNISHED WITH RUBBER O-RING