NSN 5305-01-083-2298

Part Details | CLOSE TOLERANCE SCREW

5305-01-083-2298 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: HT8181F48, HT8181F4-8, BM190454A8, BM19045-4A8, HT3264A8, HT326-4A8, BM190454A8, BM19045-4A8, BM190454A8, BM19045-4A8, HT3264A8, HT326-4A8, GB510N4A8, SFH22D4A8, SFH22D4A8, SFH22D4A8, 5305-01-083-2298, 01-083-2298, 5305010832298, 010832298

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 20, 197901-083-229829294 ( SCREW, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HIGH-TORQUE

Cross Reference | NSN 5305-01-083-2298
Part Number Cage Code Manufacturer
HT8181F4-892215ARCONIC GLOBAL FASTENERS & RINGS,INC.
BM19045-4A808524DEUTSCH FASTENER CORP
HT326-4A873197HI-SHEAR CORPORATION
BM19045-4A817446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
BM19045-4A897928HUCK INTL INC
HT326-4A8L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
GB510N4A826512NORTHROP GRUMMAN SYSTEMS CORPORATIONDIV MISSION SYSTEMS
SFH22D4A856878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
SFH22D4A880539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
SFH22D4A803680STANDARD PRESSED STEEL CO AIRCRAFTPRODUCTS DIV
Technical Data | NSN 5305-01-083-2298
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.267 INCHES MINIMUM AND 0.334 INCHES MAXIMUM
FASTENER LENGTH0.777 INCHES MINIMUM AND 0.824 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH220000 POUNDS PER SQUARE INCH
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.447 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE HIGH-TORQUE
GRIP LENGTH0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
GRIP DIAMETER0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
SPECIFICATION/STANDARD DATA26512-GB510N MANUFACTURERS STANDARD