Product Details | CLOSE TOLERANCE SCREW

5305-01-237-3441 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.

Part Alternates: BM33024V412, BM33024V4-12, HT271412, HT271-4-12, HT8137412, HT8137-4-12, DT3M430V4120, DT3M430V4-120, 110179-4-12, 5305-01-237-3441, 01-237-3441, 5305012373441, 110179412, 012373441

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 30 JUL 1986 01-237-3441

Drawings & Photos | NSN 5305-01-237-3441


Cross Reference | NSN 5305-01-237-3441

Part Number Cage Code Manufacturer
110179-4-12 80539 SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
BM33024V4-12 17446 HUCK INTERNATIONAL, INC. DBA ALCOA FASTENING SYSTEMS
BM33024V4-12 97928 HUCK INTL INC
DT3M430V4-120 76301 BOEING COMPANY, THE DBA BOEING
HT271-4-12 73197 HI-SHEAR CORPORATION
HT271-4-12 L4528 LISI AEROSPACE CANADA CORP
HT8137-4-12 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS

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Technical Data | NSN 5305-01-237-3441

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
FASTENER LENGTH 1.203 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
MATERIAL TITANIUM ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS 4967 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLE C51 FLAT COUNTERSUNK UNDERCUT
HEAD DIAMETER 0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD HEIGHT 0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM
COUNTERSINK ANGLE 100.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE D9 HIGH-TORQUE
GRIP LENGTH 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
GRIP DIAMETER 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
SURFACE FINISH 32.0 MICROINCHES GRIP

Restrictions/Controls & Freight Information | NSN 5305-01-237-3441

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information