NSN 5305-01-027-4663

Part Details | CLOSE TOLERANCE SCREW

5305-01-027-4663 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: HT402057A, HT4020-5-7A, HT402057A, HT4020-5-7A, ST3M652C57A, ST3M652C5-7A, HT402057A, HT4020-5-7A, HT402057A, HT4020-5-7A, HT402057A, HT4020-5-7A, HT402057A, HT4020-5-7A, 11925C57A, 11925C5-7A, HT402057A, HT4020-5-7A, HT402057A, HT4020-5-7A, 5305-01-027-4663, 01-027-4663, 5305010274663, 010274663

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 18, 197601-027-466329294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-027-4663
Part Number Cage Code Manufacturer
HT4020-5-7A92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT4020-5-7A06950ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M652C5-7A76301BOEING COMPANY, THEDBA BOEING
HT4020-5-7A73197HI-SHEAR CORPORATION
HT4020-5-7A17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
HT4020-5-7A97928HUCK INTL INC
HT4020-5-7AL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
11925C5-7A59563REID PRODUCTS INC.DBA REID PRODUCTS
HT4020-5-7A56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
HT4020-5-7A80539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5305-01-027-4663
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.504 INCHES MINIMUM AND 0.571 INCHES MAXIMUM
FASTENER LENGTH0.952 INCHES MINIMUM AND 0.999 INCHES MAXIMUM
HEAD STYLE1 HEXAGON COUNTERSUNK
HEAD DIAMETER0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM
HEAD HEIGHT0.088 INCHES MINIMUM AND 0.090 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
GRIP DIAMETER0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
SPECIAL FEATURESFURNISHED WITH ONE O-RING