NSN 5305-01-280-6739

Part Details | CLOSE TOLERANCE SCREW

5305-01-280-6739 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: HT40684D17A, HT4068-4D17A, 3M9264DL17, 3M926-4DL17, HT40684D17A, HT4068-4D17A, 3M9264DL17, 3M926-4DL17, HT40684D17A, HT4068-4D17A, HT40684D17A, HT4068-4D17A, HT40684D17A, HT4068-4D17A, HT40684D17A, HT4068-4D17A, 10113638, 118834DL17, 11883-4DL17, HT40684D17A, HT4068-4D17A, 3M9264DL17, 3M926-4DL17, 5305-01-280-6739, 01-280-6739, 5305012806739, 012806739

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUN 13, 198801-280-673929294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-280-6739
Part Number Cage Code Manufacturer
HT4068-4D17A06950ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M926-4DL1792215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT4068-4D17A92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M926-4DL1776301BOEING COMPANY, THEDBA BOEING
HT4068-4D17A73197HI-SHEAR CORPORATION
HT4068-4D17A17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HT4068-4D17A97928HUCK INTL INC
HT4068-4D17AL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
10113638A486GNIMIKKEISTOKESKUS NCB FINLAND
11883-4DL1759563REID PRODUCTS INC.DBA REID PRODUCTS
HT4068-4D17A56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
3M926-4DL1780539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-01-280-6739
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.373 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
FEATURES PROVIDED CETYL ALCOHOL LUBRICANT