NSN 5305-01-393-4203

Part Details | CLOSE TOLERANCE SCREW

5305-01-393-4203 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: 3M9265L20, 3M926-5L20, HT4068520A, HT4068-5-20A, HT4068520A, HT4068-5-20A, 118835L20, 11883-5L20, 3M9265L20, 3M926-5L20, 3M9265L20, 3M926-5L20, 5305-01-393-4203, 01-393-4203, 5305013934203, 013934203

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUL 20, 199401-393-420329294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-393-4203
Part Number Cage Code Manufacturer
3M926-5L2076301BOEING COMPANY, THEDBA BOEING
HT4068-5-20A73197HI-SHEAR CORPORATION
HT4068-5-20AL4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
11883-5L2059563REID PRODUCTS INC.DBA REID PRODUCTS
3M926-5L20K5673SPS TECHNOLOGIES LTD TJ BROOKSDIVISION
3M926-5L20007R1TWIST TITE MFG, INC
Technical Data | NSN 5305-01-393-4203
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.531 INCHES NOMINAL
FASTENER LENGTH1.688 INCHES MINIMUM AND 1.708 INCHES MAXIMUM
HEAD STYLE4 HEXAGON COUNTERSUNK
HEAD DIAMETER0.429 INCHES MINIMUM AND 0.477 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
GRIP DIAMETER0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
FEATURES PROVIDED DRY FILM LUBRICANT AND CETYL ALCOHOL LUBRICANT