NSN 5305-01-287-6289

Part Details | CLOSE TOLERANCE SCREW

5305-01-287-6289 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: HT4068417A, HT4068-4-17A, 3M9264L17, 3M926-4L17, HT40684L17A, HT4068-4L17A, HT4068417A, HT4068-4-17A, 3M9264L17A, 3M926-4L17A, 3M9264L17, 3M926-4L17, 3M9264L17, 3M926-4L17, 3M9264L17, 3M926-4L17, 3M9264L17, 3M926-4L17, HT4068417A, HT4068-4-17A, 3M9264L17, 3M926-4L17, HT4068417A, HT4068-4-17A, 3M9264L17, 3M926-4L17, HT4068417A, HT4068-4-17A, HT4068417A, HT4068-4-17A, 3M9264L17, 3M926-4L17, 118834L17118834L17A, 11883-4L17/11883-4L17A, 118834L17, 11883-4L17, 3M9264L17, 3M926-4L17, 3M9264L17, 3M926-4L17, HT4068417A, HT4068-4-17A, 3M9264L17, 3M926-4L17, HT40684L17A, HT4068-4L17A, HT4068417A, HT4068-4-17A, HT4068417A, HT4068-4-17A, 3M9264L17, 3M926-4L17, 3M9264L17, 3M926-4L17, WC4068417, WC4068-4-17, 5305-01-287-6289, 01-287-6289, 5305012876289, 012876289

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 25, 198801-287-628929294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-287-6289
Part Number Cage Code Manufacturer
HT4068-4-17A06950ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M926-4L1706950ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT4068-4L17A06950ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT4068-4-17A92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M926-4L17A76301BOEING COMPANY, THEDBA BOEING
3M926-4L1776301BOEING COMPANY, THEDBA BOEING
3M926-4L1758998FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T
3M926-4L170ZC92HEARTLAND PRECISION FASTENERS, INC.
3M926-4L1773197HI-SHEAR CORPORATION
HT4068-4-17A73197HI-SHEAR CORPORATION
3M926-4L171VSL7HOUSTON PRECISION FASTENERS I, LP
HT4068-4-17A17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
3M926-4L1717446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HT4068-4-17A97928HUCK INTL INC
HT4068-4-17AL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
3M926-4L17L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
11883-4L17/11883-4L17A59563REID PRODUCTS INC.DBA REID PRODUCTS
11883-4L1759563REID PRODUCTS INC.DBA REID PRODUCTS
3M926-4L17K5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
3M926-4L1756878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
HT4068-4-17A56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
3M926-4L1780539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
HT4068-4L17A80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
HT4068-4-17A06725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
HT4068-4-17A27624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
3M926-4L1706710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
3M926-4L1760516WEST COAST AEROSPACE INC
WC4068-4-1760516WEST COAST AEROSPACE INC
Technical Data | NSN 5305-01-287-6289
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 LENGTH1.516 INCHES MINIMUM AND 1.546 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
HEAD STYLE4 HEXAGON COUNTERSUNK
HEAD DIAMETER0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM
GRIP DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM