Product Details | CLOSE TOLERANCE SCREW

5305-01-237-3443 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: BM33024V512, BM33024V5-12, HT271512, HT271-5-12, HT8137512, HT8137-5-12, ST3M430V512D, ST3M430V5-12D, 110179-5-12, 5305-01-237-3443, 01-237-3443, 5305012373443, 110179512, 012373443

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 30 JUL 1986 01-237-3443

Drawings & Photos | NSN 5305-01-237-3443


Cross Reference | NSN 5305-01-237-3443

Part Number Cage Code Manufacturer
110179-5-12 56878 SPS TECHNOLOGIES, LLC DBA AEROSPACE DIVISION
BM33024V5-12 17446 HUCK INTERNATIONAL, INC. DBA ALCOA FASTENING SYSTEMS
BM33024V5-12 97928 HUCK INTL INC
HT271-5-12 73197 HI-SHEAR CORPORATION
HT271-5-12 L4528 LISI AEROSPACE CANADA CORP
HT8137-5-12 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
ST3M430V5-12D 76301 BOEING COMPANY, THE DBA BOEING

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Technical Data | NSN 5305-01-237-3443

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.312 INCHES
THREAD QUANTITY PER INCH 24
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
FASTENER LENGTH 1.265 INCHES MINIMUM AND 1.312 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 0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM
HEAD HEIGHT 0.088 INCHES MINIMUM AND 0.090 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 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
SURFACE FINISH 32.0 MICROINCHES GRIP

Restrictions/Controls & Freight Information | NSN 5305-01-237-3443

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