NSN 5305-01-249-5839

Part Details | CLOSE TOLERANCE SCREW

5305-01-249-5839 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: HT4075V41240, HT4075V4-12-40, HT4075V41240, HT4075V4-12-40, 3M1034V41240, 3M1034V4-12-40, 3M1034V41240, 3M1034V4-12-40, HT4075V41240, HT4075V4-12-40, 3M1034V41240, 3M1034V4-12-40, 11839V41240, 11839V4-12-40, 3M1034V41240, 3M1034V4-12-40, HT4075V41240, HT4075V4-12-40, 5305-01-249-5839, 01-249-5839, 5305012495839, 012495839

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53FEB 13, 198701-249-583929294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-249-5839
Part Number Cage Code Manufacturer
HT4075V4-12-4092215ARCONIC GLOBAL FASTENERS & RINGS,INC.
HT4075V4-12-4006950ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M1034V4-12-4076301BOEING COMPANY, THEDBA BOEING
3M1034V4-12-4073197HI-SHEAR CORPORATION
HT4075V4-12-4073197HI-SHEAR CORPORATION
3M1034V4-12-40L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
11839V4-12-4059563REID PRODUCTS INC.DBA REID PRODUCTS
3M1034V4-12-4056878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
HT4075V4-12-4056878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
Technical Data | NSN 5305-01-249-5839
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
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 LENGTH1.204 INCHES MINIMUM AND 1.234 INCHES MAXIMUM
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
SPECIAL FEATURESTAPPED HOLE IN HEAD 0.1380-32,UNJC-3B THREADS; DISTANCE FROM HEAD TOP TO INJECTION PORT 0.400 IN. ; INJECTION PORT 0.120 IN. LG,0.060 IN. W
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT